Date   
Re: split the group

Andy_501 <andrew.webb.501.ve4per@...>
 

Yes that would make things a little easier in the subject line have the board model you are discussing (example [BITX20] [BITX40] [BITXv?] [BITXv6] etc ) in the subject line then design a mail sort filter and msg folder structure  (ie like Thunderbird) transfer incoming emails for each separate board type to it's own folder.

That way you wouldn't miss anything: general interest posts would be in normal inbox and separate board model  folders with only the emails applicable to the specific board under discussion. If you have no interest in other boards just bulk mark them as read periodically.


On 2020-01-06 11:50, Eric Cooper wrote:
Another approach is to set your email preference to "email each message separately", then use your mail reader effectively:
1. create a filter to put all BITX20 email in its own incoming folder
2. automatically remove the topics you're not interested in as part of the filtering (or use a search / mark / delete all sequence each time you check that folder)
Details will depend on your mail reader, but the above is easy in gmail for example.

On Mon, Jan 6, 2020 at 12:42 PM Doug W <dougwilner@...> wrote:
On Mon, Jan 6, 2020 at 07:49 AM, <dgclifford@...> wrote:
but wading through v 6 infois a waste of time
Skipping that this is a 15-1/2 year old list originally started to discuss Farhan's BITX20 design and has evolved into a home for all his BITX designs, you might be happier doing what I suggested below and usually paste as a response every time this topic comes up when there is a new version of Farhan's classic.


Go to https://groups.io/g/BITX20/editsub and set email to a level you can live with. I like just the daily summary but many prefer none.  Then use the topic view https://groups.io/g/BITX20/topics on the website and read what you are interested in and the list reads almost like a forum.  The search could use some work but at least this converts the fire hose to a drinkable level.
 
--
www.bitxmap.com

Re: split the group

MadRadioModder
 

#-topics......


MRM

 


On Jan 6, 2020, at 1:17 PM, Jerry Gaffke via Groups.Io <jgaffke@...> wrote:

Go for it.
Create  uBitx-v5-KD8CEC-Nextion-phone-only
or whatever on groups.io or facebook or a 2400 baud dialup BBS.

I'll be staying right here.

Jerry, KE7ER



On Mon, Jan 6, 2020 at 05:49 AM, <dgclifford@...> wrote:
is it not time to split this group into  v1to 4 , v5  and version 6   i have no interest yet i v6 but wading through v 6 infois a waste of time

--

…_. _._

Re: split the group

ecc
 

Another approach is to set your email preference to "email each message separately", then use your mail reader effectively:
1. create a filter to put all BITX20 email in its own incoming folder
2. automatically remove the topics you're not interested in as part of the filtering (or use a search / mark / delete all sequence each time you check that folder)
Details will depend on your mail reader, but the above is easy in gmail for example.


On Mon, Jan 6, 2020 at 12:42 PM Doug W <dougwilner@...> wrote:
On Mon, Jan 6, 2020 at 07:49 AM, <dgclifford@...> wrote:
but wading through v 6 infois a waste of time
Skipping that this is a 15-1/2 year old list originally started to discuss Farhan's BITX20 design and has evolved into a home for all his BITX designs, you might be happier doing what I suggested below and usually paste as a response every time this topic comes up when there is a new version of Farhan's classic.


Go to https://groups.io/g/BITX20/editsub and set email to a level you can live with. I like just the daily summary but many prefer none.  Then use the topic view https://groups.io/g/BITX20/topics on the website and read what you are interested in and the list reads almost like a forum.  The search could use some work but at least this converts the fire hose to a drinkable level.
 
--
www.bitxmap.com

Re: uBITX V6 heat sink temperature

Evan Hand
 

I miss read the data sheet.  The actual input max is 35.  I had looked in the wrong column

I apologize for the error.

73
Evan
AC9TU

Re: split the group

Doug W
 

On Mon, Jan 6, 2020 at 07:49 AM, <dgclifford@...> wrote:
but wading through v 6 infois a waste of time
Skipping that this is a 15-1/2 year old list originally started to discuss Farhan's BITX20 design and has evolved into a home for all his BITX designs, you might be happier doing what I suggested below and usually paste as a response every time this topic comes up when there is a new version of Farhan's classic.


Go to https://groups.io/g/BITX20/editsub and set email to a level you can live with. I like just the daily summary but many prefer none.  Then use the topic view https://groups.io/g/BITX20/topics on the website and read what you are interested in and the list reads almost like a forum.  The search could use some work but at least this converts the fire hose to a drinkable level.
 
--
www.bitxmap.com

Re: split the group

Jerry Gaffke
 

Go for it.
Create  uBitx-v5-KD8CEC-Nextion-phone-only
or whatever on groups.io or facebook or a 2400 baud dialup BBS.

I'll be staying right here.

Jerry, KE7ER



On Mon, Jan 6, 2020 at 05:49 AM, <dgclifford@...> wrote:
is it not time to split this group into  v1to 4 , v5  and version 6   i have no interest yet i v6 but wading through v 6 infois a waste of time

Re: uBITX V6 heat sink temperature

Jerry Gaffke
 

Evan,

>  The above is based on the input voltage staying below the maximum value of 18 volts. 

Where do you see 18 volts?


Yes, the LM7805 voltage regulator on the Raduino goes into thermal shutdown if it gets too hot. 
After awhile the regulator will cool off enough and the radio will start working again.

I don't see in the datasheet exactly what "too hot" is, but maximum
recommended operating temp is a junction temp of 125 C.
It can get up to 150 C before damage occurs if you accidentally
hit it with a propane torch (the "absolute maximum" temperature).
Maximum voltage into an LM7805 is 25v, but in our application anything
much above 12v into the Raduino may cause the LM7805 to get too hot.



The hfsignals.com home page says:
"Any common 3 ampere 12 linear volts supply or a set of eight AA batteries will provide enough power for this transceiver."
Never does say what the maximum recommended voltage into a uBitx v6 is.
I would not go above 13.0 volts without thoroughly investigating how hot all the parts are getting,
especially the driver transistors and emitter resistors in the transmit power amp.

I would add a 3 Amp fuse to that power supply, especially if it was capable of more than 3 Amps.
Otherwise a brief mistake may cause a smoking crater in the uBitx board somewhere.

Eight fresh AA alkaline batteries might be enough to operate the radio, but only for an hour or so.

There appears to be a connector in the v6 for an internal battery and a rudimentary battery charging scheme,
but no mention of what kind of rechargeable battery that should be.

I would go with a bank of four 18650 lithium ion cells, plus an LM2940T-12 low dropout regulator
between that battery bank and the main uBitx board (but not the Raduino, but see below).
When charging, the supply voltage into that battery bank should be limited to a max of 4.2v*4cells=16.8 volts.
The lithium ion cells should be "protected" from being shorted or overly charged or underly discharged. 
The IRF510's could be powered directly from the batteries (but through a power switch!) 
without going through the 12v regulator.

Since the Raduino draws so much power, it would be worth going to a switch mode buck converter
to replace the LM7805 out there.  Could be powered directly from the lithium ion cells along with the IRF510's.
Should be possible to build one that doesn't mess with reception, but a $1 switcher off ebay may be too noisy.

Jerry, KE7ER


On Mon, Jan 6, 2020 at 03:58 AM, Evan Hand wrote:

Failure of the device can be a concern, however in the Raduino the thermal shutdown should kick in before damage to the regulator.  This will cause erratic operation of the Raduino, rather than damage.  

The above is based on the input voltage staying below the maximum value of 18 volts.  Over voltage will damage the device and cause the potential short failure.  Of course more than just the Raduino would likely be damaged in that case.

My recommendation is to add a heatsink to the regulator, especially if your are going to supply more than 12 vdc to the main board (the power amp supply is not relevant).  It is low cost and will help in keeping it below thermal shutdown.

Above are my thoughts based on my experiences.  Yours can be different.
73
Evan
AC9TU

Re: General Si5351 Question - Pi?

g8tdu
 

Has this progressed any further?

Re: UBITX6 Will Not Select 17 Meters

Ashhar Farhan
 

The changes have been pushed. The new boards will have the fixes.

- f

On Mon 6 Jan, 2020, 7:43 PM Jim Sheldon, <w0eb@...> wrote:
Erwin Serle,
Did you not read my posts all the way.  I thought that was what I said the person should do.  Besides, KD8CEC and Nextions don't work with the V6 Raduino which uses an ILI9341 TFT Touch screen display, NOT a NEXTION as it comes from the factory.

Jim Sheldon

------ Original Message ------
From: "Erwin Serlé via Groups.Io" <waterwin2@...>
Sent: 1/6/2020 6:02:37 AM
Subject: Re: [BITX20] UBITX6 Will Not Select 17 Meters

@Jim Sheldon, in this case it would be advisable to read and note the original calibration settings before doing the actual install of a new firmware.

Also as far as I understood the findings of KD8CEC a new firmware does not change the stored calibration values.

The KD8CEC Memory Manager software could be used to read the original values before doing any changes.

--
PE3ES - F4VTQ - Erwin
73

Re: Thanks & an apology

Tominaz
 

That 2nd phone was tough, ATT kept us in KC for 3 weeks studying for it. I had 2 jokers I was having to mentor for it and were they Noobs, sorry I let that one expire. I was also repairing CB gear 
and that really pissed the hams in the labs. TI research labs

Re: Thanks & an apology

Wayne Leake
 

 Don't forget that this group also includes all versions, including the BITX 20, BITX40, and offshoots of al of them.
 I'm mainly into the BITX40, I have 2 of them, and the BITX20.
 The latter I am building, when I can using a 2 bare board version.
 I have learned a lot about SSB TR units from them. Far more about how they basically work,than I did in years of repairing CB radios.
I was one of the few dong so that actually had the Commercial Phone, last being General Phone.
 And man, the test I took at the FCC office in Buffalo NY was harder, IMO, than the Exta test. I had to take the 2nd Phone 3 time to pass the test. Al I had for studying was the book back then.
 Anyways, any and all posts regarding any aspect of the BITX series should be fine here.
 You might get some FLAK if you asked about putting one on 11 meters.
 6 meters would be okay, but I shave a 6 all mode, plus an ICOM 706 MK II G, so that is of passing interest to me.
 However, many would be interested in a 2 meter SSB unit.
 Wayne WA2YNE


On Mon, Jan 6, 2020, 7:39 AM Don - KM4UDX <dontAy155@...> wrote:
Andy -- my uBITX did for me exactly what you want the uBITX to do for your class. So push on.

This groups.io is a unbelievable resource. There are more kind folks here with more smarts and experience than you could possibly shake a stick at.

So, keep a thick skin, and post away.  If you want help on any training or class material related to the uBITX, you have come to the right place.

Don
km4udx

Re: uBITX V6 heat sink temperature

Bill
 

On Mon, Jan 6, 2020 at 06:58 AM, Evan Hand wrote:
My recommendation is to add a heatsink to the regulator, especially if your are going to supply more than 12 vdc to the main board (the power amp supply is not relevant).  It is low cost and will help in keeping it below thermal shutdown.
Evan, the v6 comes with a substantial heat sink on the 7805.  The temperatures reported are with the heat sink.

 - Bill  KB3T

Re: Pin 8 and Pin 9 on KT1 #ubitx #v3

Gordon Gibby
 

Look at page 3, upper right hand corner, for the pinout:
 


On Mon, Jan 6, 2020 at 9:15 AM <sksshel@...> wrote:
I need to know how to locate these 2 pins on the KT1 relay.   

There are 8 pins on the relay.  Please help. 

Pin 8 and Pin 9 on KT1 #ubitx #v3

Steve - KE0VCD
 

I need to know how to locate these 2 pins on the KT1 relay.   

There are 8 pins on the relay.  Please help. 

Re: UBITX6 Will Not Select 17 Meters

Jim Sheldon
 

Erwin Serle,
Did you not read my posts all the way.  I thought that was what I said the person should do.  Besides, KD8CEC and Nextions don't work with the V6 Raduino which uses an ILI9341 TFT Touch screen display, NOT a NEXTION as it comes from the factory.

Jim Sheldon

------ Original Message ------
From: "Erwin Serlé via Groups.Io" <waterwin2@...>
Sent: 1/6/2020 6:02:37 AM
Subject: Re: [BITX20] UBITX6 Will Not Select 17 Meters

@Jim Sheldon, in this case it would be advisable to read and note the original calibration settings before doing the actual install of a new firmware.

Also as far as I understood the findings of KD8CEC a new firmware does not change the stored calibration values.

The KD8CEC Memory Manager software could be used to read the original values before doing any changes.

--
PE3ES - F4VTQ - Erwin
73

Re: Help with troubleshooting Bitx40 - no transmit. #bitx40help

Allard PE1NWL
 

Hi Hetzal,
which firmware version are you using?
(version number as shown on the LCD at power ON)
Did you install any modifications?

73 Allard PE1NWL

Re: uBITX V6 heat sink temperature

Don - KM4UDX
 

With the 16x2 display the LM7805 was warm. Upgrade to a sexy 4.3 Nextion and the LM7805 was all nuclear core. 
Still. I suspect it would have served and suffered in silence for years and years.
Still. I put a heat sink and then moved the Nextion load to a off board buck converter.  Necessary? Not likely. Fun? Oh so much. Note I hacksawed part of the heat sink so it would not meld with the nearby toroid.
Much happiness and tropical temperatures in uBITX land.

Don
km4udx

Re: split the group

Bill Cromwell
 

Hi DG,

Most computers, tablets, phones, etc have a delete function. Mine gets a lot of use and after more than 10 years of beating on it I find that it still works.

73,

Bill KU8H

On 1/6/20 8:49 AM, @biker wrote:
is it not time to split this group into  v1to 4 , v5  and version 6   i have no interest yet i v6 but wading through v 6 infois a waste of time
--
bark less - wag more

Re: Help with troubleshooting Bitx40 - no transmit. #bitx40help

Hetzal@...
 

Ted: Thanks. This is a Bitx40. The SWR is only an LED, but I Also get a flash with an induction coil in the antenna feed line. The flash is momentary even if I hold PTT and shout into mike.

Re: Help with troubleshooting Bitx40 - no transmit. #bitx40help

Hetzal@...
 

Raj: Thanks so much for the reply. The mic polarity is correct and the Mike functions well when tested on other equipment.