Date   

Re: Digitally Controllable Heathkit Vacuum Tube Radio

Michael Hagen
 

Yes, I got plenty of bare PCBs for Lotsa Clocks.

And we are waiting for a report from Vince who got one of the first assembled units.


It has the 20 Pin SI part with extra address jumper for I2C.  This part is more expensive than the smaller 10 pin part, about $2.42.

So it can be run from Raduio with the 3 clock chip by selecting other address.

It has on board 3.3V regulator and level shifting.  So it runs stand alone on I2C connector.

Molex output with grounds next to each of the 8 outputs.

Email me for more info... I got about a half dozen other boards too!

73's and Keep Clockin,

Mike, WA6ISP

MotDog@...

 


On 1/9/2018 8:17 PM, Vince Vielhaber wrote:
So does Mike Hagen in this very group!

Vince.


On 01/09/2018 10:53 PM, freefuel@... wrote:
if you want 8 outputs this vendor has a board with the 8 output version
of the Si5351A chip
installed, https://www.tindie.com/products/kevpatt/creltek-8-channel-clock-generator/

-Justin N2TOH



-- 
Mike Hagen, WA6ISP
10917 Bryant Street
Yucaipa, Ca. 92399
(909) 918-0058
PayPal ID  "MotDog@..."
Mike@...


Re: Micro-BITX ... Lost in post ? Possibly

Marc Jones
 

I just thought that it David as Taking a Long time .... Well , It would seem that if we are all waiting , That there's not much we can do about it yet ...  It just would be nice to know roughly where it is ... Is it still in 'The Bag' in Mumbai Airport, Is it winging its way around Europe, Is it in Britain , Wedged behind a posties  seat in his van ? ... Perhaps we will never know ... Ha 

Thanks for the replies Gents ...

Regards 

On Wed, 10 Jan 2018 at 18:04, philip yates
<phil@...> wrote:
Mines probably with yours, somewhere between here and there.

Phil - G7BZD

On Wed, Jan 10, 2018 at 1:54 PM, Marc Jones via Groups.Io <gw0wvl@...> wrote:
I had confirmation that my Micro-Bitx was posted on the 12 the December, Tracked to Mumbai airport  on the 15 the December, Then it seems to have got lost, Various phonecalls to Royal mail with the tracking number has turned up a blank, Its not on there system, A few emails to HF SIG's , And I've been told it won't get lost in the post .....Time is ticking on, Perhaps its wedged behind a seat in a Royal mail van ? .... Who knows ... Ile give it another week in case it does turn up , If not ile have to email HF SIG's again and go from there .... British postal services can be hit SNF miss st the best of times .




uBITx: Encoder without detents

Mike Woods
 

Does anybody have a link to a Chinese supplier of rotary encoders without detents like that supplied in the uBITx?

73

Mike ZL1AXG

--
Mike Woods
mhwoods@...


Re: Implement a uBITX Memory Manager Program

Ian Lee
 

First, thank you for suggesting a good solution.

I used arduino for the first time. Looking at the original code, most of them were implemented as polling.
As you all know, interrupts can have a small impact on the main thread. I could not use it without knowing the exact structure of the interruption of Arduino.

So I solved the problematic parts of the original source polling method in the same way as JACK mentioned above.
Like the RTOS, the delay function seems to be blocked in (delay)called thread, but, it handles the work of another thread.
In the RTOS, when one thread stopped progressing by mutex or semaphore, I got a hint from another thread that without being affected. It seemed to be able to solve the problem while maintaining the original polling method. so I solved this problem by creating a delay to do the background work with priority (for cw keying...)

These are things I did not know about Arduino. If I have a chance to learn Arduino later, I will study and programming again.
If I did not know about Arduino and made you feel confused by what I was talking about, I will be careful in the future.

Thanks.
KD8CEC

2018-01-11 6:44 GMT+09:00 Pavel Milanes Costa <pavelmc@...>:

EXACTLY!

If you are in a delay() routine (or trigger one of them) while you receive a serial request from the CAT system the MCU will queue the request until the delay fishes and you check for the serial data availability, as long as 2 seconds per some of the delay(2000) in the code...

Arduino will answer back but out of sync with the PC app, then wsjt/mixw/hrd/fldig/hamlib etc will disconnect as "radio did not respond."

The link Jack posted has the idea of using millis instead of delays I mentioned in my email.


Some more URL to deep on this and stop using delay() for EVERTHING:

https://www.arduino.cc/reference/en/language/functions/time/delay/ (See Notes and Warnings at the bottom)

https://playground.arduino.cc/Code/AvoidDelay

https://randomnerdtutorials.com/why-you-shouldnt-always-use-the-arduino-delay-function/


From the hand od Lady Ada (Adafruits) a complete tutorial step by step with code...

https://learn.adafruit.com/multi-tasking-the-arduino-part-1/overview


Cheers, Pavel.


El 10/01/18 a las 14:28, Jack Purdum via Groups.Io escribió:
The Arduino delay() function is a blocking function, which means the delay() does not disable interrupts and means that interrupt events can be missed. You can write your own delay routine that does disable interrupts which queues the interrupt(s). Most programmers who are using interrupts write their own delay routine. See:




Jack, W8TEE



From: Pavel Milanes Costa <pavelmc@...>
To: BITX20@groups.io
Sent: Wednesday, January 10, 2018 1:51 PM
Subject: Re: [BITX20] Implement a uBITX Memory Manager Program

You are asking for a hammer to break an egg.
A quick search of the word "delay(" in the ubitx sources returned 52 hits, with a quite amount of them being 500 msec or more.
Get rid of the blocking delays and the CAT control will work flawlessly. Been there done that for a project.
Note: you can do a dirty hack and build a fast as hell non blocking delay of any length routine breaking the amount of time by smaller chunks and check for serial commands in the meanwhile, 10 millis worked for me... but this is a dirty trick, you can also try to reprogram the routines that depends on delays with a account for millis instead or thinking out of the box... at the end refactoring will lead to a smaller firmware that the dirty hack...
Even with interrupt routines (that you don't use) it can be worked out, they can be changed to work in "flag flip, do next" instead of "do this code right now" and it will work.
73 Pavel CO7WT.


El 10/01/18 a las 11:51, Ian Lee escribió:
If you are wondering about RTOS, I think RTOS should be monitoring most interrupts as much as possible.

However, the questioner is curious about the timeout. Timeouts will only occur in the original source of uBITX.
Suppose that you press the menu button once and wait for the next button in the while statement.
Let wsjt-x transmit the protocol that reads the frequency once every 500ms, and if there is no response, it displays an error and disconnects.
When the user presses the button to select the menu and wonders whether to move the band or change the CW tone, 500ms flows and wsjt-x displays an error and disconnects.

This is a problem that can be easily solved using an interrupt or an RTOS. 
For this reason I talked about the interrupt and the RTOS. If you are wondering about RTOS, please feel free to ask.
I will explain in detail what I know.

2018-01-10 23:28 GMT+09:00 Michael Monteith via Groups.Io <michael_r_monteith=yahoo.com@groups.io>:
Ian,
 I've been wondering if RTOS might be an option to handle all the interrupts etc?
https://www.freertos.org/

73, Michael
KM4OLT


--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)

-- 
73 CO7WT, Pavel.



Virus-free. www.avast.com

-- 
73 CO7WT, Pavel.



--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)


Re: how to set bfo

Dave Bottom <ars.kd6az@...>
 

Rod,

That's an interesting  idea to use the audio output.  Typically you set the Carrier Oscillator/BFO 20 dB down the skirt.  I have lots of spectrum analyzers, but actually I mostly now use RTA Audio on my iPad as it has >100dB dynamic range.  I'm going to make a a cable breakout box from the TRRS input to play with that.  

It turns out for me I found the offset is exactly the same as on my Collins 2.1KC Mechanical Filter (ooops KHz filter) for good sounding SSB and also lots more output from the Balanced Modulator.  This is a long way from the default BFO setting.

On Wed, Jan 10, 2018 at 9:50 AM, Gordon Gibby <ggibby@...> wrote:
The software for automatic link establishment also turns out show you a spectrum analyzer in bar chart form.  Just by watching the waterfall in FL DGI or other software you probably got a intuitive understanding as well.

Sent from my iPhone

On Jan 10, 2018, at 12:41, Rod Self <km6sn@...> wrote:

Dave,

Thanks. I dug into the software and  found out how to get into setup. OK now.

r.e. the BFO - as you know, the receiver on a ubitx is a 12 MHz fixed-frequency receiver. USB/LSB switching is done in the previous mixing stages. Using band-noise as a wideband signal source, if one views the ubitx audio output on an audio spectrum analyzer, it should be quite easy to set the BFO frequency to a desirable setting.

On Linux there is a great open-source audio spectrum analyzer called JAAA. On garden-varitey USB sound cards you can see at least an 80 db range. I will use JAAA to view the ubitx audio spectrum and set the BFO accordingly. Then, in the ubitx.ino code, one can tweak the SECOND_OSC_USB and SECOND_OSC_LSB constant definitions to achieve balance when switching sidebands.

I am sure there are useful audio spectrum analyzer programs for Windows and Mac, which would work equally well.

That is my plan for today; I will travel to my shop and will let you know how it works out.

Cheers,

Rod KM6SN


On 01/10/2018 08:59 AM, Dave Bottom wrote:
Rod,

When in SETUP keep turning the knob clockwise and finally BFO Set will appear.  It always starts at the same default frequency (this should be fixed and display the current frequency setting) but then you can change the BFO.  Record your setting so you can try different values, but listening while adjusting on a SSB station works (sort of).

Dave WI6R

On Tue, Jan 9, 2018 at 1:55 PM, Rod Self <km6sn@...> wrote:

Hi All,

How does one get into setup to set the BFO frequency? The instructions on the web site appear not to work.

Rod KM6SN





--
73 Dave WI6R




--
73 Dave WI6R


Re: Micro-BITX ... Lost in post ? Possibly

Les Preston
 

I ordered my UbitX on the 11/12/17, it was shipped on the 29/12/17 and it was delivered on the 04/01/18 so, I guess I am one of the lucky ones not having to play the waiting game.
Fingers crossed that all those still waiting will receive theirs soon.

Les
M0BSI.


Re: Micro-BITX ... Lost in post ? Possibly

MAc B
 

My is in same bag, I suppose still in Mumbai but was bagged (mumbai) 1/1/2018.

But - tracking shows "in transit" and Polish Post tracking shows the same. System know my parcel. ;-)

Still waiting... but not nervous.

 

MAc
mrn


Re: Micro-BITX ... Lost in post ? Possibly

Laurence Oberman
 

They always show up and with the holidays will be delayed.
I have bought multiple items from hfsignals, never lost one yet.
Regards
KB1HKO

On Wed, Jan 10, 2018 at 11:11 AM, Tom, SQ9DJE <tomasz@...> wrote:
be patient, I have exactly the same, I am waiting, I think it will come soon


Tom, SQ9DJE


Re: Micro-BITX ... Lost in post ? Possibly

Steve Black <kb1chu@...>
 

In this get it now world we live in I recall my dad saying "Be patient or become one" It still rings true today. Of course this is coming from the guy who stands in front of the microwave oven and yells"HURRY" Steve kb1chu



Sent from my Smart Phone I said I'd never get.


-------- Original message --------
From: "Marc Jones via Groups.Io" <gw0wvl@...>
Date: 1/10/18 4:47 PM (GMT-05:00)
To: BITX20@groups.io
Subject: Re: [BITX20] Micro-BITX ... Lost in post ? Possibly

Carl, That very much mirrors the cause of action I've taken , I've logged into Royal mail, No record of the tracking number or parcel, Phoned Royal mail, Who did check after check on there various sites, To no avail.... Sent an email yo hfsigs who said its been sent ...so from the seem of it, Its anywhere between here and Mumbai .... Although I'm guessing it will turn up at some point in time , It doesn't give me much confidence at the moment .

Regards 

Marc  'Gw0wvl' ...


On Wed, 10 Jan 2018 at 18:07, m0icr@...
<m0icr@...> wrote:

Mark, 

You and I are in an almost identical situation, I live in London UK. Day 31 here.

I ordered my uBitx on 10th December (first-batch order, like yours), my package was also tracked into and *out of* the Mumbai 'Office of Exchange' on 15th December as confirmed at http://www.parcelcode.com/Tracking/Track
I haven't chased it with HF Sigs yet but there seems little point unless to arrange for a replacement to be sent but I am now starting to wonder at what point this is the best course of action (see below and the latest from Royal Mail)? The radio was a Christmas present to myself, I knew it was very unlikely to arrive before Christmas but I really did expect it to have arrived by now. 

I have also seen or heard nothing since Mumbai. I too have spoken with the UK Royal Mail and they have no record of the tracking number as issued by India Post and to back this up the tracking number is not recognized as valid on the UK Royal Mail online tracking system. As far as the UK Royal Mail is concerned my package is not on the UK system and they can not confirm where it is, if indeed it has arrived in the UK at all. That *is* a concern.  https://www.royalmail.com/track-your-item#/

For further confirmation, I have *this morning* spoken with Customer Services at the London Heathrow Worldwide Distribution Centre (HWDC) (Tel UK 0843 548 8217) via Royal Mail customer services, which is the UK main sorting office for international mail sent by air to the UK, and they are (1) Unable to track my package, (2) Have assured me that they are *not* suffering a major backlog. UK Royal Mail are quite clear - the package has *never* been on their system. *This afternoon* the advice of the UK Royal Mail parcel tracking team (Tel UK 0345 774 0740), using my India Post tracking number as reference was that: (1) The Parcel should be here by now and that they strongly recommend initiation of what they called a 'postal investigation' which must be started by *the sender* through India Post, and that India Post would then liaise with UK Royal Mail, I was also advised that an investigation can take up to 8 weeks. They also confirmed that they are not aware of any backlog in UK customs (HMRC) clearances at their international handling centre and in fact said that typical handling time was (quote) "5 days or less at the moment *because* of Christmas".

I assume (or more accurately, I fear) that this proposed 'postal investigation' would involve continued delay whilst the package is located and/or any remedial action is taken, ie. a claim for the loss is submitted and then eventually a replacement (back log permitting) is sent? Ouch.

Where does the responsibility now rest to sort this out because from what I have heard from UK Royal Mail today they don't think that this is their problem furthermore I am sure that the solution is no longer about just being patient!

To be clear, in no way is this a personal criticism of Farhan or the excellent innovations and fun he has brought to the amateur radio community, or the fantastic work he continues to do to offer worthwhile employment opportunities to ladies in India, but it is a genuine concern from a customer (and Bitx enthusiast) who simply wants to enjoy their new radio but who is now starting to fear that their package could be lost/taken and that it's going to be months before a uBitx arrives.

Of course it could arrive tomorrow despite what the UK Royal Mail have told me today ... stranger things have happened!

 

73 Carl M0ICR


Re: Micro-BITX ... Lost in post ? Possibly

Glenn
 

I got mine on Monday 8th Jan in VK.   The board is numbered "742/1" so I assume it's number 742 in 1st batch.  I actually ordered from the 2nd batch but did a deal with a VK7 friend who ordered in batch 1 to build it. 2nd batch is yet to arrive here like many others waiting. Ordered just before Xmas.

Built mine into an old extruded modem case which wan't wide enough, so had to rotate the PCB 90 degrees. This meant I could centralise the LCD display.   I ran shielded wires for the audio and Mic signals.  I am yet to do the same for the 3 oscillator wires in the extended cable i made.  Receiver sounds pretty nice on 80M last night but lack of AGC is very noticible, so will be looking to do that mod if it comes up.

glenn
vk3pe


Re: Micro-BITX ... Lost in post ? Possibly

chris gress <Chrisg0wfh@...>
 

My last 2 bitx's came via India post had them in 4 days got to be down to time of the year I am still waiting for parts ordered at start of DEC from China I hate waiting I got long wait for micro-bitx ordered 31 DEC  chris G0WFH

On 10 Jan 2018 21:56, "M Garza" <mgarza896@...> wrote:
It is probably sitting in the customs warehouse.
My BITX40 sat there for at least 2 weeks before it started going through the US Postal Service.  I know, UK, but probably the same process.
To add insult to injury, my apartment office lost it for another month.

Marco - KG5PRT

On Wed, Jan 10, 2018 at 3:47 PM, Marc Jones via Groups.Io <gw0wvl@...> wrote:
Carl, That very much mirrors the cause of action I've taken , I've logged into Royal mail, No record of the tracking number or parcel, Phoned Royal mail, Who did check after check on there various sites, To no avail.... Sent an email yo hfsigs who said its been sent ...so from the seem of it, Its anywhere between here and Mumbai .... Although I'm guessing it will turn up at some point in time , It doesn't give me much confidence at the moment .

Regards 

Marc  'Gw0wvl' ...


On Wed, 10 Jan 2018 at 18:07, m0icr@...
<m0icr@...> wrote:

Mark, 

You and I are in an almost identical situation, I live in London UK. Day 31 here.

I ordered my uBitx on 10th December (first-batch order, like yours), my package was also tracked into and *out of* the Mumbai 'Office of Exchange' on 15th December as confirmed at http://www.parcelcode.com/Tracking/Track
I haven't chased it with HF Sigs yet but there seems little point unless to arrange for a replacement to be sent but I am now starting to wonder at what point this is the best course of action (see below and the latest from Royal Mail)? The radio was a Christmas present to myself, I knew it was very unlikely to arrive before Christmas but I really did expect it to have arrived by now. 

I have also seen or heard nothing since Mumbai. I too have spoken with the UK Royal Mail and they have no record of the tracking number as issued by India Post and to back this up the tracking number is not recognized as valid on the UK Royal Mail online tracking system. As far as the UK Royal Mail is concerned my package is not on the UK system and they can not confirm where it is, if indeed it has arrived in the UK at all. That *is* a concern.  https://www.royalmail.com/track-your-item#/

For further confirmation, I have *this morning* spoken with Customer Services at the London Heathrow Worldwide Distribution Centre (HWDC) (Tel UK 0843 548 8217) via Royal Mail customer services, which is the UK main sorting office for international mail sent by air to the UK, and they are (1) Unable to track my package, (2) Have assured me that they are *not* suffering a major backlog. UK Royal Mail are quite clear - the package has *never* been on their system. *This afternoon* the advice of the UK Royal Mail parcel tracking team (Tel UK 0345 774 0740), using my India Post tracking number as reference was that: (1) The Parcel should be here by now and that they strongly recommend initiation of what they called a 'postal investigation' which must be started by *the sender* through India Post, and that India Post would then liaise with UK Royal Mail, I was also advised that an investigation can take up to 8 weeks. They also confirmed that they are not aware of any backlog in UK customs (HMRC) clearances at their international handling centre and in fact said that typical handling time was (quote) "5 days or less at the moment *because* of Christmas".

I assume (or more accurately, I fear) that this proposed 'postal investigation' would involve continued delay whilst the package is located and/or any remedial action is taken, ie. a claim for the loss is submitted and then eventually a replacement (back log permitting) is sent? Ouch.

Where does the responsibility now rest to sort this out because from what I have heard from UK Royal Mail today they don't think that this is their problem furthermore I am sure that the solution is no longer about just being patient!

To be clear, in no way is this a personal criticism of Farhan or the excellent innovations and fun he has brought to the amateur radio community, or the fantastic work he continues to do to offer worthwhile employment opportunities to ladies in India, but it is a genuine concern from a customer (and Bitx enthusiast) who simply wants to enjoy their new radio but who is now starting to fear that their package could be lost/taken and that it's going to be months before a uBitx arrives.

Of course it could arrive tomorrow despite what the UK Royal Mail have told me today ... stranger things have happened!

 

73 Carl M0ICR



Re: Amplifier Kit?

chris gress <Chrisg0wfh@...>
 

Any of you guys tried HFR-20w from Eleflow supposed to be 2sc1969 equivalent transistors made under licence I got them for a sgc2020 but was never used chris

On 10 Jan 2018 21:49, "M Garza" <mgarza896@...> wrote:
I have been purchasing MRF477s, 2SC2312s, and 2SC1969s directly from HG semiconductor (http://hgsemi.com/index.asp).  I have a HTX-10 and a couple of HTX-100s that I repaired with the parts.  The parts work well and are direct drop in replacements.  The repairs have all been 10M radios, so I want to see if they work in a push-pull amp.  
I also would not mind putting together a 50 watt MRF477 push-pull amp (1995 Handbook, page 17.93).

Marco - KG5PRT

On Wed, Jan 10, 2018 at 3:15 PM, Thomas Sharka via Groups.Io <sharkatw@...> wrote:
The 2SC2312 is long out of manufacture so any "new" ones that you find on ebay will most likely be factory sweepings that were relabled. While it's possible to stress test each and every one that you purchase, there won't be a reliable run to be found.
 
But if you enjoy the thrill of finding a suitable substitute, I don't see anything wrong with the design. It's simple and straightforward. You have to be careful not to overdrive it, however as it will probably fry those finals in a very short time. Also, the max ratings on the transistor are about 17 watts each, so if you're driving a pair at 40 watts, you're going to be pushing them a bit.

Sent from Yahoo Mail. Get the app


On Wednesday, January 10, 2018 3:53 PM, M Garza <mgarza896@...> wrote:


Has anyone built the FARA Amplifier?  Any thoughts on it?  It uses a pair of 2SC2312 bipolar transistors.
Here is a link for a pdf:  https://xa.yimg.com/kq/groups/ydc32qvuetL.SqbOtA--/qcPApkfte9drGDQjw.B./name/ampl_linear_FARA_2SC2312.pdf
I have a few HG 2SC2312s, so I am debating on ordering a couple of the board sets from FAR Circuits.   $18 for the 2 board set.

Marco - KG5PRT

On Wed, Jan 10, 2018 at 2:18 PM, kc0wox Leeper <kc0wox@...> wrote:
You can see a youtube video testing the wa2eby amplifier lowpass filter frequency response at https://www.youtube.com/watch? v=O5WZVePpegg It uses a HP8407a network analyzer to check the frequency response. The first part of the video explains how a network analyzer works and then tests the lowpass filters.

Leonard
kc0wox





Re: Micro-BITX ... Lost in post ? Possibly

M Garza <mgarza896@...>
 

It is probably sitting in the customs warehouse.
My BITX40 sat there for at least 2 weeks before it started going through the US Postal Service.  I know, UK, but probably the same process.
To add insult to injury, my apartment office lost it for another month.

Marco - KG5PRT

On Wed, Jan 10, 2018 at 3:47 PM, Marc Jones via Groups.Io <gw0wvl@...> wrote:
Carl, That very much mirrors the cause of action I've taken , I've logged into Royal mail, No record of the tracking number or parcel, Phoned Royal mail, Who did check after check on there various sites, To no avail.... Sent an email yo hfsigs who said its been sent ...so from the seem of it, Its anywhere between here and Mumbai .... Although I'm guessing it will turn up at some point in time , It doesn't give me much confidence at the moment .

Regards 

Marc  'Gw0wvl' ...


On Wed, 10 Jan 2018 at 18:07, m0icr@...
<m0icr@...> wrote:

Mark, 

You and I are in an almost identical situation, I live in London UK. Day 31 here.

I ordered my uBitx on 10th December (first-batch order, like yours), my package was also tracked into and *out of* the Mumbai 'Office of Exchange' on 15th December as confirmed at http://www.parcelcode.com/Tracking/Track
I haven't chased it with HF Sigs yet but there seems little point unless to arrange for a replacement to be sent but I am now starting to wonder at what point this is the best course of action (see below and the latest from Royal Mail)? The radio was a Christmas present to myself, I knew it was very unlikely to arrive before Christmas but I really did expect it to have arrived by now. 

I have also seen or heard nothing since Mumbai. I too have spoken with the UK Royal Mail and they have no record of the tracking number as issued by India Post and to back this up the tracking number is not recognized as valid on the UK Royal Mail online tracking system. As far as the UK Royal Mail is concerned my package is not on the UK system and they can not confirm where it is, if indeed it has arrived in the UK at all. That *is* a concern.  https://www.royalmail.com/track-your-item#/

For further confirmation, I have *this morning* spoken with Customer Services at the London Heathrow Worldwide Distribution Centre (HWDC) (Tel UK 0843 548 8217) via Royal Mail customer services, which is the UK main sorting office for international mail sent by air to the UK, and they are (1) Unable to track my package, (2) Have assured me that they are *not* suffering a major backlog. UK Royal Mail are quite clear - the package has *never* been on their system. *This afternoon* the advice of the UK Royal Mail parcel tracking team (Tel UK 0345 774 0740), using my India Post tracking number as reference was that: (1) The Parcel should be here by now and that they strongly recommend initiation of what they called a 'postal investigation' which must be started by *the sender* through India Post, and that India Post would then liaise with UK Royal Mail, I was also advised that an investigation can take up to 8 weeks. They also confirmed that they are not aware of any backlog in UK customs (HMRC) clearances at their international handling centre and in fact said that typical handling time was (quote) "5 days or less at the moment *because* of Christmas".

I assume (or more accurately, I fear) that this proposed 'postal investigation' would involve continued delay whilst the package is located and/or any remedial action is taken, ie. a claim for the loss is submitted and then eventually a replacement (back log permitting) is sent? Ouch.

Where does the responsibility now rest to sort this out because from what I have heard from UK Royal Mail today they don't think that this is their problem furthermore I am sure that the solution is no longer about just being patient!

To be clear, in no way is this a personal criticism of Farhan or the excellent innovations and fun he has brought to the amateur radio community, or the fantastic work he continues to do to offer worthwhile employment opportunities to ladies in India, but it is a genuine concern from a customer (and Bitx enthusiast) who simply wants to enjoy their new radio but who is now starting to fear that their package could be lost/taken and that it's going to be months before a uBitx arrives.

Of course it could arrive tomorrow despite what the UK Royal Mail have told me today ... stranger things have happened!

 

73 Carl M0ICR



Re: Micro-BITX ... Lost in post ? Possibly

Marc Jones
 

Carl, That very much mirrors the cause of action I've taken , I've logged into Royal mail, No record of the tracking number or parcel, Phoned Royal mail, Who did check after check on there various sites, To no avail.... Sent an email yo hfsigs who said its been sent ...so from the seem of it, Its anywhere between here and Mumbai .... Although I'm guessing it will turn up at some point in time , It doesn't give me much confidence at the moment .

Regards 

On Wed, 10 Jan 2018 at 18:07, m0icr@...
<m0icr@...> wrote:

Mark, 

You and I are in an almost identical situation, I live in London UK. Day 31 here.

I ordered my uBitx on 10th December (first-batch order, like yours), my package was also tracked into and *out of* the Mumbai 'Office of Exchange' on 15th December as confirmed at http://www.parcelcode.com/Tracking/Track
I haven't chased it with HF Sigs yet but there seems little point unless to arrange for a replacement to be sent but I am now starting to wonder at what point this is the best course of action (see below and the latest from Royal Mail)? The radio was a Christmas present to myself, I knew it was very unlikely to arrive before Christmas but I really did expect it to have arrived by now. 

I have also seen or heard nothing since Mumbai. I too have spoken with the UK Royal Mail and they have no record of the tracking number as issued by India Post and to back this up the tracking number is not recognized as valid on the UK Royal Mail online tracking system. As far as the UK Royal Mail is concerned my package is not on the UK system and they can not confirm where it is, if indeed it has arrived in the UK at all. That *is* a concern.  https://www.royalmail.com/track-your-item#/

For further confirmation, I have *this morning* spoken with Customer Services at the London Heathrow Worldwide Distribution Centre (HWDC) (Tel UK 0843 548 8217) via Royal Mail customer services, which is the UK main sorting office for international mail sent by air to the UK, and they are (1) Unable to track my package, (2) Have assured me that they are *not* suffering a major backlog. UK Royal Mail are quite clear - the package has *never* been on their system. *This afternoon* the advice of the UK Royal Mail parcel tracking team (Tel UK 0345 774 0740), using my India Post tracking number as reference was that: (1) The Parcel should be here by now and that they strongly recommend initiation of what they called a 'postal investigation' which must be started by *the sender* through India Post, and that India Post would then liaise with UK Royal Mail, I was also advised that an investigation can take up to 8 weeks. They also confirmed that they are not aware of any backlog in UK customs (HMRC) clearances at their international handling centre and in fact said that typical handling time was (quote) "5 days or less at the moment *because* of Christmas".

I assume (or more accurately, I fear) that this proposed 'postal investigation' would involve continued delay whilst the package is located and/or any remedial action is taken, ie. a claim for the loss is submitted and then eventually a replacement (back log permitting) is sent? Ouch.

Where does the responsibility now rest to sort this out because from what I have heard from UK Royal Mail today they don't think that this is their problem furthermore I am sure that the solution is no longer about just being patient!

To be clear, in no way is this a personal criticism of Farhan or the excellent innovations and fun he has brought to the amateur radio community, or the fantastic work he continues to do to offer worthwhile employment opportunities to ladies in India, but it is a genuine concern from a customer (and Bitx enthusiast) who simply wants to enjoy their new radio but who is now starting to fear that their package could be lost/taken and that it's going to be months before a uBitx arrives.

Of course it could arrive tomorrow despite what the UK Royal Mail have told me today ... stranger things have happened!

 

73 Carl M0ICR


Re: Amplifier Kit?

M Garza <mgarza896@...>
 

I have been purchasing MRF477s, 2SC2312s, and 2SC1969s directly from HG semiconductor (http://hgsemi.com/index.asp).  I have a HTX-10 and a couple of HTX-100s that I repaired with the parts.  The parts work well and are direct drop in replacements.  The repairs have all been 10M radios, so I want to see if they work in a push-pull amp.  
I also would not mind putting together a 50 watt MRF477 push-pull amp (1995 Handbook, page 17.93).

Marco - KG5PRT

On Wed, Jan 10, 2018 at 3:15 PM, Thomas Sharka via Groups.Io <sharkatw@...> wrote:
The 2SC2312 is long out of manufacture so any "new" ones that you find on ebay will most likely be factory sweepings that were relabled. While it's possible to stress test each and every one that you purchase, there won't be a reliable run to be found.
 
But if you enjoy the thrill of finding a suitable substitute, I don't see anything wrong with the design. It's simple and straightforward. You have to be careful not to overdrive it, however as it will probably fry those finals in a very short time. Also, the max ratings on the transistor are about 17 watts each, so if you're driving a pair at 40 watts, you're going to be pushing them a bit.

Sent from Yahoo Mail. Get the app


On Wednesday, January 10, 2018 3:53 PM, M Garza <mgarza896@...> wrote:


Has anyone built the FARA Amplifier?  Any thoughts on it?  It uses a pair of 2SC2312 bipolar transistors.
Here is a link for a pdf:  https://xa.yimg.com/kq/groups/ydc32qvuetL.SqbOtA--/qcPApkfte9drGDQjw.B./name/ampl_linear_FARA_2SC2312.pdf
I have a few HG 2SC2312s, so I am debating on ordering a couple of the board sets from FAR Circuits.   $18 for the 2 board set.

Marco - KG5PRT

On Wed, Jan 10, 2018 at 2:18 PM, kc0wox Leeper <kc0wox@...> wrote:
You can see a youtube video testing the wa2eby amplifier lowpass filter frequency response at https://www.youtube.com/watch? v=O5WZVePpegg It uses a HP8407a network analyzer to check the frequency response. The first part of the video explains how a network analyzer works and then tests the lowpass filters.

Leonard
kc0wox





Re: Implement a uBITX Memory Manager Program

Pavel Milanes Costa <pavelmc@...>
 

EXACTLY!

If you are in a delay() routine (or trigger one of them) while you receive a serial request from the CAT system the MCU will queue the request until the delay fishes and you check for the serial data availability, as long as 2 seconds per some of the delay(2000) in the code...

Arduino will answer back but out of sync with the PC app, then wsjt/mixw/hrd/fldig/hamlib etc will disconnect as "radio did not respond."

The link Jack posted has the idea of using millis instead of delays I mentioned in my email.


Some more URL to deep on this and stop using delay() for EVERTHING:

https://www.arduino.cc/reference/en/language/functions/time/delay/ (See Notes and Warnings at the bottom)

https://playground.arduino.cc/Code/AvoidDelay

https://randomnerdtutorials.com/why-you-shouldnt-always-use-the-arduino-delay-function/


From the hand od Lady Ada (Adafruits) a complete tutorial step by step with code...

https://learn.adafruit.com/multi-tasking-the-arduino-part-1/overview


Cheers, Pavel.


El 10/01/18 a las 14:28, Jack Purdum via Groups.Io escribió:
The Arduino delay() function is a blocking function, which means the delay() does not disable interrupts and means that interrupt events can be missed. You can write your own delay routine that does disable interrupts which queues the interrupt(s). Most programmers who are using interrupts write their own delay routine. See:




Jack, W8TEE



From: Pavel Milanes Costa <pavelmc@...>
To: BITX20@groups.io
Sent: Wednesday, January 10, 2018 1:51 PM
Subject: Re: [BITX20] Implement a uBITX Memory Manager Program

You are asking for a hammer to break an egg.
A quick search of the word "delay(" in the ubitx sources returned 52 hits, with a quite amount of them being 500 msec or more.
Get rid of the blocking delays and the CAT control will work flawlessly. Been there done that for a project.
Note: you can do a dirty hack and build a fast as hell non blocking delay of any length routine breaking the amount of time by smaller chunks and check for serial commands in the meanwhile, 10 millis worked for me... but this is a dirty trick, you can also try to reprogram the routines that depends on delays with a account for millis instead or thinking out of the box... at the end refactoring will lead to a smaller firmware that the dirty hack...
Even with interrupt routines (that you don't use) it can be worked out, they can be changed to work in "flag flip, do next" instead of "do this code right now" and it will work.
73 Pavel CO7WT.


El 10/01/18 a las 11:51, Ian Lee escribió:
If you are wondering about RTOS, I think RTOS should be monitoring most interrupts as much as possible.

However, the questioner is curious about the timeout. Timeouts will only occur in the original source of uBITX.
Suppose that you press the menu button once and wait for the next button in the while statement.
Let wsjt-x transmit the protocol that reads the frequency once every 500ms, and if there is no response, it displays an error and disconnects.
When the user presses the button to select the menu and wonders whether to move the band or change the CW tone, 500ms flows and wsjt-x displays an error and disconnects.

This is a problem that can be easily solved using an interrupt or an RTOS. 
For this reason I talked about the interrupt and the RTOS. If you are wondering about RTOS, please feel free to ask.
I will explain in detail what I know.

2018-01-10 23:28 GMT+09:00 Michael Monteith via Groups.Io <michael_r_monteith@...>:
Ian,
 I've been wondering if RTOS might be an option to handle all the interrupts etc?
https://www.freertos.org/

73, Michael
KM4OLT


--
Best 73
KD8CEC / Ph.D ian lee
kd8cec@...
www.hamskey.com (my blog)

-- 
73 CO7WT, Pavel.



Virus-free. www.avast.com

-- 
73 CO7WT, Pavel.


Re: Micro-BITX ... Lost in post ? Possibly

Marc Jones
 

Yours and mine are in the same 'Bag' by the seems of it David..

Regards 

On Wed, 10 Jan 2018 at 17:48, David Holland
<g4ldt@...> wrote:

Mine was ordered on the 9th December, posted on the 12 and "Put into the bag"? at Mumbai airport.  I guess that the "Bag" must be pretty full by now!!!

David G4LDT


On 10/01/2018 13:54, Marc Jones via Groups.Io wrote:
I had confirmation that my Micro-Bitx was posted on the 12 the December, Tracked to Mumbai airport  on the 15 the December, Then it seems to have got lost, Various phonecalls to Royal mail with the tracking number has turned up a blank, Its not on there system, A few emails to HF SIG's , And I've been told it won't get lost in the post .....Time is ticking on, Perhaps its wedged behind a seat in a Royal mail van ? .... Who knows ... Ile give it another week in case it does turn up , If not ile have to email HF SIG's again and go from there .... British postal services can be hit SNF miss st the best of times .


Mark  'Gw0wvl' ...



Re: Amplifier Kit?

K9HZ <bill@...>
 

Um No.  ALC was designed for limiting catastrophic over drive situations from occurring, not to use as gain control.  The feedback loop turns your otherwise linear amplifier into a non-linear amplifier generating all sorts of bad byproducts. 


Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

 

Owner - Operator

Big Signal Ranch – K9ZC

Staunton, Illinois

 

Owner – Operator

Villa Grand Piton - J68HZ

Soufriere, St. Lucia W.I.

Rent it: www.VillaGrandPiton.com


email:  bill@...

 


On Jan 10, 2018, at 2:38 PM, Vince Vielhaber <vev@...> wrote:

Another option would be ALC like on commercially made rigs.

Vince.



On 01/10/2018 11:51 AM, Diver Martin wrote:
The biggest problem to adding an amp to the uBitx is the fact that it's
using the IRF510's as the output amplifier, and the output power is not
consistent.  I've thought about adding my 50W amplifier to the uBitx,
but the issue there is that the amplifier only needs 0.7W drive at 40m,
and needs 3W drive at 10m.  The uBitx is putting out 7-10W @ 40m, and
under 3W at 10m, so a variable attenuator or something would be needed,
or a set of attenuation resistors and switches.

One option might be to reduce the gain (Increase negative feedback) of
the output amplifier using R261/R262 which are pretty large at 200 ohms,
and increasing the input drive.  I haven't experimented with this yet
though, and they'd probably have to be beefier resistors.  All things in
due time, my mod PCB project comes first (it's almost done, will
hopefully send out a preliminary design email tonight).

On Wed, Jan 10, 2018 at 8:44 AM, Rob N4RMK <N4RMK.tn@...
<mailto:N4RMK.tn@...>> wrote:

   I'm a total novice with electronics, so I'm not sure whether I could
   effectively make this mod.  I'm just thinking that a 50 watt or 100
   watt amp would be an awesome addition to the uBitx.




--
Martin Held - AE7EU
http://ae7eu.com/
-------------------------------------------------------------------------------
If there aren't any questions, then what is there to learn?

--
 Michigan VHF Corp.   http://www.nobucks.net/   http://www.CDupe.com/
                         http://www.metalworkingfun.com




Re: Amplifier Kit?

Thomas Sharka
 

The 2SC2312 is long out of manufacture so any "new" ones that you find on ebay will most likely be factory sweepings that were relabled. While it's possible to stress test each and every one that you purchase, there won't be a reliable run to be found.
 
But if you enjoy the thrill of finding a suitable substitute, I don't see anything wrong with the design. It's simple and straightforward. You have to be careful not to overdrive it, however as it will probably fry those finals in a very short time. Also, the max ratings on the transistor are about 17 watts each, so if you're driving a pair at 40 watts, you're going to be pushing them a bit.

Sent from Yahoo Mail. Get the app


On Wednesday, January 10, 2018 3:53 PM, M Garza <mgarza896@...> wrote:


Has anyone built the FARA Amplifier?  Any thoughts on it?  It uses a pair of 2SC2312 bipolar transistors.
Here is a link for a pdf:  https://xa.yimg.com/kq/groups/ydc32qvuetL.SqbOtA--/qcPApkfte9drGDQjw.B./name/ampl_linear_FARA_2SC2312.pdf
I have a few HG 2SC2312s, so I am debating on ordering a couple of the board sets from FAR Circuits.   $18 for the 2 board set.

Marco - KG5PRT

On Wed, Jan 10, 2018 at 2:18 PM, kc0wox Leeper <kc0wox@...> wrote:
You can see a youtube video testing the wa2eby amplifier lowpass filter frequency response at https://www.youtube.com/watch? v=O5WZVePpegg It uses a HP8407a network analyzer to check the frequency response. The first part of the video explains how a network analyzer works and then tests the lowpass filters.

Leonard
kc0wox




Bitx40 Raduino convert to uBitx Raduino

q q
 

Hi All

I have a spare Bitx40 Raduino in the junk box here as I am using a QRP-Labs VFO in the Bitx40 that I want to make into a spare uBitx Raduino for reprogramming/hacking.

I've looked at both Raduinos and don't see any differences in the two boards aside from the #1 pin on P3 being lifted from ground.

The only thing left is to put a 16 pin right angle male header on P3.

Am I missing anything here?

Thanks for your input.

73,
Bob
N1ETS