Date   

Re: Buyer beware! RD16HHF1

William Cullison <wa8vih@...>
 

I guess I have four fake RD16's coming. Thanks for the information.

73 Bill WA8VIH

On Sat, May 12, 2018, 08:31 Richie Chambless <rchambless7@...> wrote:
I bought a pair of RD16s on EBay from a seller in Texas (Texxcom?) for $8 each. They are genuine.


Re: Straight key problem

Jack, W8TEE
 

Check ubitx.net for help.

Jack, W8TEE


On Saturday, May 12, 2018, 9:21:55 AM EDT, <aronax37@...> wrote:


 When insert a straight key into KEY jack, it transmits immediately. A resistor 4,7K installed. All seems ok. Where is the fault?  Thanks for help.
Ivo,OK2SHI


Re: Should we adopt the KD8CEC firmware?

Jack, W8TEE
 

All:

Right now, I am not running Ian's software, but I know there are a lot of people who are. Given the alignment software that Farhan needs to be included, the switch seems to be a moot question for now unless Farhan wishes to modify the display to use fewer I/O lines. That seems like a lot of work for marginal benefit. Ian has a lot of nice features in the software and has done an amazing job getting it all packed into a very small address space. People have been successful in moving to Ian's project, so I would argue for not changing it. The documentation seems to make the switch a fairly "cookbook-like" process and painless.

Also, I would like to argue for not using multiple *.ino files in any project that we use in conjunction with the µBITX. To assess the impact, take either code project, change all the *.ino files except ubitx_20.ino to *.cpp (C++) file (ubitx_20.ino holds the setup() and loop() functions needed by the IDE and must remain a *.ino file) and then compile it. You will see numerous warnings on the compile. True, they are not errors, but warnings. By using multiple *.ino files, type checking is turned off and those warnings are hidden...their cause is still in the code, it's just that you don't know about them. Most of the time, those warnings will not cause problems, but when they do, it can be very difficult to find the bug.

There may be another advantage, too. I have not checked this, but when *.cpp files are used, it appears that the IDE (Gnu) compiler can do "incremental compiles." That is, if you have not changed a given *.cpp file since the last compile, certain parts of the compile process (e.g., syntax checking) can be bypassed, resulting in slightly faster compiles. Like I said, I have not timed this yet, but I know when I start working with my project in the morning with a "fresh start", my 10,000 line project takes a fairly long time to perform that first compile. If I only change 1 file and then recompile, it is a much faster compile. I have a pretty fast PC, but I would guess that I save over 30 seconds per compile. Not a big deal unless you're doing a hundred compiles each day. In that case, it saves me almost an hour a day. To me, changing to *.cpp files and correcting the code so the warnings disappear is worth the effort. The fact that subsequent compiles may be quicker is just a dab of icing on the cake.

Jack, W8TEE




On Saturday, May 12, 2018, 7:20:28 AM EDT, Raj vu2zap <rajendrakumargg@...> wrote:


How much more space required ?

At 12-05-18, you wrote:
I just noticed that the sketch is too big to get into the nano with the factory alignment enabled. this is a mandatory in the shipped firmware. I don't want to fork out and grandfather the KD8CEC versions. Not sure what to do now...

- f

On Sat, May 12, 2018 at 11:38 AM, Ashhar Farhan <farhanbox@...> wrote:
Peeps,

Given that Dr.Lee's software is now pretty stable from 1.06 onwards, what do you all say about using this as the 'shipped' firmware? I have some personal quirks that make me modify it for my personal use (ex: I prefere general coverage when changing the bands rather than steps to and from ham bands) but do we consider it to be usable and stable for our needs?Â

I resisted feature-ful software as the base because smaller code base makes it easier for people to get in and modify, there is space in the memory for modifications, etc.Â

If there is a general consensus, then, we will customize it to the standard hardware, and start burning this into the next batch of ubitx.

Opinions, please.

- f


Re: Should we adopt the KD8CEC firmware?

Doug W
 

I don't have a real strong opinion either way but I do have one concern.  If you start shipping a CAT enabled rig you are basically giving your blessing to use digital modes on the stock radio and all the issues that come with excessive heat and the finals.  At the very least I would include a very strong warning to the user about upgrading the thermal management before going digital.  The easier you make it to do something the less likely many users are to implement proper procedures.  I am thrilled with my µBITX and appreciate your design everyday.  I would hate to see it get a bad reputation because a bunch of unqualified new users cook the finals.
--
www.bitxmap.com


Straight key problem

Ivo Hubik
 

 When insert a straight key into KEY jack, it transmits immediately. A resistor 4,7K installed. All seems ok. Where is the fault?  Thanks for help.
Ivo,OK2SHI


Re: ubitx mic pre-amp not working, no SSB

Don, ND6T
 

Hi Tim, strange indeed. About this time I would grab another meter and re-check my measurements. Next I would test each of the components as much as possible in circuit. A low source voltage ohm meter will check the resistances and such. Do a diode check of the transistor junctions. Pull the transistor and check resistances from the vacant pads. Apply power and check the voltages of the vacant pads. Look under the board. Test a new transistor and install it. Somewhere in this series of tests a clue should appear. Diligence always prevails. 73, Don


Re: Buyer beware! RD16HHF1

Richie Chambless
 

I bought a pair of RD16s on EBay from a seller in Texas (Texxcom?) for $8 each. They are genuine.


Re: Should we adopt the KD8CEC firmware?

John (vk2eta)
 

 No disrespect to the default software of the uBitx, but from a "marketing" perspective and in my experience, Ian's software brings the rig to a more complete and enjoyable level.

So I support it to be the default software. 

There is a simple and easy fix to free some extra memory for the factory alignment routines and that is to use the SoftI2CMaster I2C library instead of the Wire library. I have done that in the portable variation I uploaded to the files section and it has been working without a fault for several weeks now with both an Arduino as slave and the Si5351 on the I2C bus.

This replacement library saves 1158 bytes of flash memory. 

I have passed the information to Ian Lee about this. Maybe he has plans to incorporate it in a future version as he has also worked on freeing up memory for extra features.

The second option is to have options in the source (like I did in the same uploaded software in the ubitx_20.ino file) with features like WSPR disabled by default and the factory alignment enabled by default. These can then be swapped with a simple addition/removal of comments ("//") in the source. This should be pretty easy to document.

All the best,

73, John (VK2ETA)


Re: Should we adopt the KD8CEC firmware?

Dennis Zabawa
 

Stick to what you are doing.  IF anyone wants to upgrade their Raduino, they have that option with minimal effort.  I agree that the factory alignment software is vital.  TNX for all your efforts!

As of now, I have a BITX40 and two uBITX up and functioning well.  I applaud you for your efforts to bring employment to your fellow country persons (have to be politically correct here).


Re: uBITX narrow IF filter mod for CW, anyone tried this?

Rag LB-Three-RE Stein-Roar
 

Hello

I saw one guy had a capacitor across to make 
Narrow for CW.

I also thinking about making a filterboard between cw/ssb.

I bougth a cw/ssb audio filter from sotabeam


Best Regards,
Stein-Roar Brobakken
LB3RE K3RAG 
Skype: lb3re.rag

12. mai 2018 kl. 12:04 skrev Alex - PA1FOX <pa1fox@...>:

Hi Frank,

Don't know if you are referring to a specific mod but I have very good results with a second 4MHz crystal filter parallel to the 12MHz SSB filter

My ubitx is made from scratch though, not based on the commercial kit.
(And I do use modified firmware)

73,

Alex PA1FOX


Re: Bitx40 turning clicks #bitx40

John 2e0eii
 

Hi Frank my b40 is running on factory settings and firmware ,I had the annoying clicks,
But reduced all wiring to minimum length, and changed sensitive wiring for screened lead,this really worked for me I still have a little clicking at low volume, but at normal volume all clear ,good luck ,,John 2e0eii

On 12 May 2018 7:15 a.m., fvinnerlid@... wrote:
Hello
Need some help with the turning click on my bitx 40.I know its been up before but have not found any 
Help in the msgs.
I have tried every step the hardware way.
Capacitors on the raduino 7805--no luck
Removed all kose wires on the raduino--- no luck
Shielded the raduino in coppar sheets with feedthrough caps 《big jobb》 -- no luck
Build the bitx40 on pcb ground plane --no luck
So I am thinking it might a software issue. If upgrading the software what wojld be the best version.
Might changing the Nano be a way ?
Any hejp would be nice, as it now the rig is very hard to operate.

Thanks
Frank





ardware 


Re: SMT sizes in µBITX

Jim Sheldon
 

I have one of these as well but find I don't use it except for inspection.  Even at 10X, the field of view is difficult to work with for my eyesight if I try to use it for building SMD boards, but for inspecting the finished work for solder shorts this is really nice.  Price was right too - got mine off eBay for $189.95 and free shipping from an import firm in California.

Jim - W0EB

------ Original Message ------
From: "Paul Galburt - K2AYZ" <galburt@...>
Sent: 5/12/2018 6:17:14 AM
Subject: Re: [BITX20] SMT sizes in µBITX

I recently acquired the same microscope on Amazon. Very impressive generally except the build on LED light is not a useful as would be dual, brighter lighting. This is fixable of course.

http://a.co/iVvMuBJ

The large working distance bests any head mounted glasses or magnifier I have used in the past, and 10X is just about right. The main limitation is the relatively narrow field of view means moving the target (pc board assembly) more frequently.

As a critical inspection tool, its unbeatable at the price.

I have not tried the 20X option.

73,

Paul - K2AYZ


Re: For those keeping track of uBITX shipping times #ubitx

Jim Sheldon
 

Wow!  I said HF Signals was getting faster - they must have the backlog caught up and now shipping from stock.  Ordered another one on May 9th/2018 - got shipping notice via PayPal in this morning's email - DHL tracking says should be delivered Tuesday of next week. 

Jim - W0EB


Re: Should we adopt the KD8CEC firmware?

 

How much more space required ?


At 12-05-18, you wrote:
I just noticed that the sketch is too big to get into the nano with the factory alignment enabled. this is a mandatory in the shipped firmware. I don't want to fork out and grandfather the KD8CEC versions. Not sure what to do now...

- f

On Sat, May 12, 2018 at 11:38 AM, Ashhar Farhan <farhanbox@...> wrote:
Peeps,

Given that Dr.Lee's software is now pretty stable from 1.06 onwards, what do you all say about using this as the 'shipped' firmware? I have some personal quirks that make me modify it for my personal use (ex: I prefere general coverage when changing the bands rather than steps to and from ham bands) but do we consider it to be usable and stable for our needs?Â

I resisted feature-ful software as the base because smaller code base makes it easier for people to get in and modify, there is space in the memory for modifications, etc.Â

If there is a general consensus, then, we will customize it to the standard hardware, and start burning this into the next batch of ubitx.

Opinions, please.

- f


Re: Voltage Regulator

 

The VFO does not draw enough current to heat the regulator.

I am sure you have wired the 78L09 wrongly. The various versions have different pinouts.

Yuo could post a picture and we may be able to spot the mistake.

Raj, vu2zap

At 12-05-18, you wrote:
Hello everyone.
I want to ask about the LM78L09 that used in VFO circuit in bitx40. Once I turn on the 12v power supply, the LM78L09 smoked up. Is there any possibility that the voltage regulator has been broken or it didn't strong enough to take the current from power supply? Should I use LM7809 instead?


Re: SMT sizes in µBITX

Paul Galburt - K2AYZ
 

I recently acquired the same microscope on Amazon. Very impressive generally except the build on LED light is not a useful as would be dual, brighter lighting. This is fixable of course.

http://a.co/iVvMuBJ

The large working distance bests any head mounted glasses or magnifier I have used in the past, and 10X is just about right. The main limitation is the relatively narrow field of view means moving the target (pc board assembly) more frequently.

As a critical inspection tool, its unbeatable at the price.

I have not tried the 20X option.

73,

Paul - K2AYZ


Re: uBITX narrow IF filter mod for CW, anyone tried this?

Frank PA7F
 

Hi Alex,

Thank you for your reply! I think you have a very nice set up there with 4 and 12 MHz IF's!

In order to narrow the 12 MHz IF for CW, Farhan suggested to add 220 pF capacitors across the existing 100 pF capacitors in the 12 MHz IF crystal filter. I had hoped somebody tried this. You described on this group how you narrowed down the 4 MHz IF bandpass in your uBITX by using 68 pF capacitors to achieve a 400 Hz bandwidth. So you reduced the value of those caps to narrow the IF.

I have integrated the NEQRP SCAF-filter (audio filter) in my uBITX, this works good, but not perfect as strong signals are leaking through the filter.

73, Frank
PA7F


QUOTE
12/21/17  
i have been using a straight key for sometime. i have found no glitches in the straight key. i used the iambic keyer just for a few quick QSOs. I am straight key guy, hence the keyer code will need some improvement.
the cw is NOT generated with a side tone injection. The CW is generated by the SI5351 by putting it directly on the tx frequency. For those wishing to have a narrower filter, all you hve to do is to add another 220pf capacitors in parallel to the 100pfs across the ladder filter.
UNQUOTE
 


Voltage Regulator

qonita.salimah@...
 

Hello everyone.
I want to ask about the LM78L09 that used in VFO circuit in bitx40. Once I turn on the 12v power supply, the LM78L09 smoked up. Is there any possibility that the voltage regulator has been broken or it didn't strong enough to take the current from power supply? Should I use LM7809 instead?


Re: Should we adopt the KD8CEC firmware?

Frank PA7F
 

Ashhar,

KD8CEC f/w is really good.

After I got my uBITX working I immediately installed v1.061. Following Ian's suggestion I used a tool called Xloader to install the hex-file. You don't have to install and get to know the Arduino IDE. 

Frank PA7F


Re: uBITX narrow IF filter mod for CW, anyone tried this?

Alex - PA1FOX
 

Hi Frank,

Don't know if you are referring to a specific mod but I have very good results with a second 4MHz crystal filter parallel to the 12MHz SSB filter

My ubitx is made from scratch though, not based on the commercial kit.
(And I do use modified firmware)

73,

Alex PA1FOX