Date   
Re: whistles in receive

Dave Bottom <ars.kd6az@...>
 


image1.jpeg
Helluva Rush Order 5 (Military version)
...And it was for  in a rush back during WWII

Lotsa fun radios can be found for almost nothing. This one free except cost of gas to go pick it up and restoration parts. 

You can’t duplicate the smells as they warm the room. Part of the patina. 

Dave WI6R 

On Feb 5, 2018, at 10:40 AM, chris gress <Chrisg0wfh@...> wrote:

And to think I have 1 old ICOM I'm to poor for any else lol

On 5 Feb 2018 18:35, "Jack Purdum via Groups.Io" <jjpurdum=yahoo.com@groups.io> wrote:
One can get carried away, however...

Inline image
Jack, W8TEE


From: Leland Lannoye <wa9aoe@...>
To: BITX20@groups.io
Sent: Monday, February 5, 2018 10:49 AM
Subject: Re: [BITX20] whistles in receive

There have been numerous articles in QST over the years on rebuilding these old rigs.  I found an article which I saved somewhere on building transistor substitutes for the tubes.  you could build them on small perf boards and set up a set of wires that corresponded to the pin out on the tubes.  At one time, someone was making modules to replace all the low power and receiving tubes on the Collins S line.  That was at least 40 years ago.  I don't do well on a lot of these tiny connections anymore due to age and aging eyes, but my history skills are still largely intact.
Lee, WA9AOE
PS: Still awaiting shipment on my Bitx.
On 2/5/2018 10:40 AM, Ashhar Farhan wrote:
The warm smells of an HRO steaming up... is there any hotroding one can do to these rigs?
- f

On 5 Feb 2018 12:02 am, "Leland Lannoye" <wa9aoe@...> wrote:
I am sitting here reading some of this information and studying the new technology.  When I was young (at leas 50 years ago), solid state technologies were either in their infancy or still a dream.  Our rigs were two pieces of equipment, a receiver and a transmitter with a variety of accessories.

Most of our receivers for those of us who were not well heeld in the financial area were of the single conversion genre with an if frequency of 455 kHz.  With little preselection capability, this relegated the ham bands 20 mtrs and above useless with hetrodyne images from frequencies 910 kHz either above or below the desired reception point. There, in that day, were three remedies to fix this. The first two were:

    1.)  add a really selective high gain preselector to tune the offending images out

    2.)  raise the if to something on the order of 1600 kHz which left bandpass selectivity at a substantial disadvantage.

The third option, and the most expensive in its day was double (or, even triple) conversion.  If  you were able to pay the 1958 price of over $300, you were in and there were few difficulties thereafter until the receiver aged and developed some bad shield grounds or worse.  The second or third conversion local oscillator would provide a cornu copia of birdies of one type or another. These included signals that were always there, I know the newer designs with balanced mixers and the like have few of these problems, but, it is worth considering.

An aging ham from way back.


Lee, WA9AOE


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Re: IRF510 more Volts = more W? #ubitx

Nick VK4PP
 

HI,
I did this last night with the uBITX, went from 13.8 to 24v. and only saw an increase of +-2w.

80m 24v=12w 13.8v=10w
40m 24v=7w 13.8v=9w
20m 24v=3w 13.8v=4.5w
10m 24v=1w 13.8v=2w

Also cause weird display glitched during TX....
Thoughts?
73 VK4PLN

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Jack, W8TEE
 

Hi Ian:

I was wondering if you had plans to convert the support files for your software to *.cpp files from their current *.ino secondary file names (except for ubitx_30.ino)?

Jack, W8TEE

Re: whistles in receive

Allard PE1NWL
 

On Mon, Feb 5, 2018 at 07:56 am, Jerry Gaffke wrote:
One of my earliest memories at about 3 years of age, maybe less, is being fascinated
by the console tube radio we had in the living room.
Peering around in back, face pressed against the wall, trying to see what was inside
and figure out how it worked.
Funny, that's exactly one of my earliest memories too.
I used to peek trough the holes in the rear panel. Inside was a mysterious glow and a warm smell came out:

Afbeeldingsresultaat voor Philips B3X92A

One day I turned the dial and strange beeps came out. My dad told me they were messages from saylors far away.
I never lost my fascination for radio waves since.

73 Allard PE1NWL

Re: Anyone (US Only for now) need a uBITX Raduino repaired? #ubitx

Jim Sheldon
 

That DOES present a problem - LOL.

I found that one does NOT want to power the Nano using the Vin pin if you are using an external supply greater than 12VDC!  The on board LM1117 regulator can't take that with the load of the processor and the I/O on it.  Smoke, fire and flames in the regulator - overvoltaged the processor on the Nano, put more than 5 volts onto the I2C bus so it wiped out the Si5251 Clock chip as well.

I got a real education in replacing the 5351 - LOL.  I have a cheap hot air rework station and it did a nice job removing the dead chip.  I have been playing with the idea of possibly breadboarding a Raduino and have some carrier PC boards for the 5351's.  Still have to solder the chips on the boards though.  I bough a handful of 5351A's from Digi-Key for 91 cents US apiece. 

The way to go was Chip Quik's "Tack" flux - not cheap but 10ml for $20 bucks will last a LOOOONG time.  Dab of it on each pad, position the chip carefully over it's pads and using a needle point tip on my soldering iron, tacked each pin to the board.  I made up a probe for my DVM using a small sewing needle and was able to confirm continuity and no shorts on all the pins.  Programmed a new Nano and replaced the one that burned up (put machined pins and sockets on things this time).  Everything fired up and ran just fine.  Just after I built the test fixture, I read the frequencies of the clocks on my nicely calibrated uBITX and wrote them down.  With the test set, I can go into Factory Alignment mode and with a freq counter attached to the Clock 2 output, I can actually set the frequency accurately and save it.  The BFO can be read on clock 1 and I had those figures too so setting it to the right frequency was a breeze.  After the repair, I re-installed it in the uBITX, tuned to WWV at 5.000.00 MHz (the only one I can hear in Kansas during the daytime) and I was only off by 150 Hz.  Sure saved a lot of time being able to pre-calibrate the clocks outside of the radio!

The only drawback is - the clocks have to be calibrated to the specific radio for accuracy, due to the variations in crystal filters.  You can, however get very close so if I had to replace a Nano for someone, I could pre-calibrate the clocks to close proximity of what they should be and the user could fine tune them in his/her rig.

Jim - W0EB

New file uploaded to BITX20@groups.io

BITX20@groups.io Notification <BITX20+notification@...>
 

Hello,

This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20@groups.io group.

File: ubitx_V2_00R.zip

Uploaded By: Jim Sheldon

Description:
Latest NON I2C release from W0EB/W2CTX - ubitx_V2_00R contains totally restructured menu system - SPLIT is working - slight rewiring of CW Key Jack is required but this VASTLY improves the CW keying - full instructions are included in the PDF manual -- see README.TXT in the zipfile for change details.

You can access this file at the URL:
https://groups.io/g/BITX20/files/%23ubitx%20ubitx%20release%20software%20from%20W0EBW2CTX/ubitx_V2_00R.zip

Cheers,
The Groups.io Team

Re: IRF510 more Volts = more W? #ubitx

Vic WA4THR
 

Very odd, but I am now seeing the same thing on my BitX40v3. On the test bench I was seeing what looked to be an output that increased by the square of the PA voltage ratio, but since packaking, shorter leads, some common grounds, I actually see the same or even less output at 24v than at 12v (or 13.8). I must have some wiring issue, but I did directly jumper the 24v to the PA and saw no difference, so ??

=Vic=

Re: Anyone (US Only for now) need a uBITX Raduino repaired? #ubitx

KC9SGV <kc9sgv@...>
 

Hi Jim,
Good to know.
I might need your service later....
Ordered all the parts to try myself first.

The Raduino seems to be the Achiles heel here.
Break it, by reversing the connectors, or short some part of it out to ground by way of shoddy assembly practice, and your radio is done.
A Raduino replacement service is needed.
Not sure that HFsigs can keep up with that as well.

Bernie
KC9SGV


On Feb 5, 2018, at 4:20 PM, Jim Sheldon <w0eb@...> wrote:

That DOES present a problem - LOL.

I found that one does NOT want to power the Nano using the Vin pin if you are using an external supply greater than 12VDC!  The on board LM1117 regulator can't take that with the load of the processor and the I/O on it.  Smoke, fire and flames in the regulator - overvoltaged the processor on the Nano, put more than 5 volts onto the I2C bus so it wiped out the Si5251 Clock chip as well.

I got a real education in replacing the 5351 - LOL.  I have a cheap hot air rework station and it did a nice job removing the dead chip.  I have been playing with the idea of possibly breadboarding a Raduino and have some carrier PC boards for the 5351's.  Still have to solder the chips on the boards though.  I bough a handful of 5351A's from Digi-Key for 91 cents US apiece. 

The way to go was Chip Quik's "Tack" flux - not cheap but 10ml for $20 bucks will last a LOOOONG time.  Dab of it on each pad, position the chip carefully over it's pads and using a needle point tip on my soldering iron, tacked each pin to the board.  I made up a probe for my DVM using a small sewing needle and was able to confirm continuity and no shorts on all the pins.  Programmed a new Nano and replaced the one that burned up (put machined pins and sockets on things this time).  Everything fired up and ran just fine.  Just after I built the test fixture, I read the frequencies of the clocks on my nicely calibrated uBITX and wrote them down.  With the test set, I can go into Factory Alignment mode and with a freq counter attached to the Clock 2 output, I can actually set the frequency accurately and save it.  The BFO can be read on clock 1 and I had those figures too so setting it to the right frequency was a breeze.  After the repair, I re-installed it in the uBITX, tuned to WWV at 5.000.00 MHz (the only one I can hear in Kansas during the daytime) and I was only off by 150 Hz.  Sure saved a lot of time being able to pre-calibrate the clocks outside of the radio!

The only drawback is - the clocks have to be calibrated to the specific radio for accuracy, due to the variations in crystal filters.  You can, however get very close so if I had to replace a Nano for someone, I could pre-calibrate the clocks to close proximity of what they should be and the user could fine tune them in his/her rig.

Jim - W0EB

Re: IRF510 more Volts = more W? #ubitx

Nick VK4PP
 

Maybe the bias needs re-adjusting for 24v operation?
I really dont know much about the technical operations of these things, I am still learing...
I am tempted to replace the Electro caps with 35v versions and try maybe 30v in the PA... I have spare IRF510s... lol.
Nick.,

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Konstantinos Konstas
 

Hello Ian,

Thank you very much for the updated version (CEC) 0.34 which is the first that I have uploaded to my newly received UBitx.
It has greatly improved the way my trx operates.
I will be testing it for a while, but generally speaking what I've tested up till now works to my expectations. Congratulations.

One thing that it is not very clear to me is how the split mode works. Is there a link or video for it? It would save me some time from trying to guess how and it would be greatly appreciated. As you may figure out, I also like to chase some DX as a QRP station!

I would like to invest some time to some necessary hardware improvements, number one being adding AGC (testing at first the original schematic), and then adding the s-meter to pin7.
I hope I can also find some time to play with your UBitx Manager.

Taking this opportunity, I would also like to comment that you are doing a very excellent job with your version of firmware for UBitx, and we as users must feel very lucky for that. Please keep the good work.
 
Very sincerely,

Re: IRF510 more Volts = more W? #ubitx

Rob Snow
 

I'm following this with lots of interest.  I still don't have my uBITX and probably won't until March or so.  My personal goal is for ~10W out 28MHz, preferably with some headroom if I wanted to push it or just for a margin of error.  To that end I've ordered extra IRF510s and some RD16HHF1's as I have poor magic smoke herding skills and even poorer PA skills!

-Rob

Re: Anyone (US Only for now) need a uBITX Raduino repaired? #ubitx

Jim Sheldon
 

Hope you do fix it yourself Bernie, It can be a real learning experience and if not, I'll be glad to try and help.  The only really tricky part is replacing the 5351.  Everything else is pretty straightforward.

If you have an oscilloscope,and frequency counter, carefully probe the clock outputs on the bottom pins of the Raduino. Clock 0 is the BFO and should show a sine wave with a frequency of 11995-12000 KHz  Clock 1 will show the receive local oscillator and clock 2 will show the transmit oscillator.  If in CW mode it should show the exact frequency the display is tuned to.

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Ian Lee
 

Jack.
Thank you for your attention and advice.
I first used Arduino. So I thought that Arduino was this style.(I did not know.)
I also decided that it would be nice to keep the original name in order to share code in github. In fact, some or all of my code has been merged into someone else's project.
On the other hand, I received a pullrequest request from someone else and my code was modified.
But now I was wondering if I should keep this style with little or no original source left.

I released it to version 0.35 a few hours ago.It's got more features than I thought with the help of many great people. they has good idea and good suggestion.
I have put all the functions I wanted to put in, except to build in wspr. So going to release Major in 1.0 soon.
I think this issue should be reconsidered at that point.

Thank you again for your interest.

Ian KD8CEC

2018-02-06 6:54 GMT+09:00 Jack Purdum via Groups.Io <jjpurdum@...>:

Hi Ian:

I was wondering if you had plans to convert the support files for your software to *.cpp files from their current *.ino secondary file names (except for ubitx_30.ino)?

Jack, W8TEE



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

Re: whistles in receive

John Backo
 

Back in the '50's, when I was still in high school,
console radios were being replaced by "portables"
and lots of them were available for the taking. I had
one which I took out of the wood and put on my desk,
a 9 or 10 tube job with all the SW frequencies. I think
it was an Emerson.

I stuck a long wire antenna out the window to a nearby
tree and listened all the time. When I was doing my homework
on October 4, 1957, I was listening to Radio Moscow when
they announced that Sputnik 1 had been launched.

I don't remember whether or not I finished my homework
that night. Hi.

I don't know whether or not any of those old console radios
are still available. I lost mine along the way. But it sure would
be nice to have one of those rigs again.

Ah, well; there is always Arduino...

john
AD5YE

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Ian Lee
 

Thanks for using this firmware.

split mode is very simple implement. when TX start (CW or PTT), Change VFO, and finish TX, back to VFO.
It actually took less than five minutes to implement. Because it is so simple structure, there is probably no big problem.
Instead, I put Vfo to Channel, Channel to Vfo in v0.35. It is a function to put frequently used frequency into a channel and to call it as a VFO.
With uBITX Manager, you can using adjust Hamband, TX control, builtin memory keyer(autokey), adjust tune step... and Accurate CW Keying by entering precise ADC value input

I hav plan to change the version to 1.0 this week and work on the video and manual.

Thanks agian.

Ian KD8CEC



2018-02-06 7:56 GMT+09:00 Konstantinos Konstas <constantine170@...>:

Hello Ian,

Thank you very much for the updated version (CEC) 0.34 which is the first that I have uploaded to my newly received UBitx.
It has greatly improved the way my trx operates.
I will be testing it for a while, but generally speaking what I've tested up till now works to my expectations. Congratulations.

One thing that it is not very clear to me is how the split mode works. Is there a link or video for it? It would save me some time from trying to guess how and it would be greatly appreciated. As you may figure out, I also like to chase some DX as a QRP station!

I would like to invest some time to some necessary hardware improvements, number one being adding AGC (testing at first the original schematic), and then adding the s-meter to pin7.
I hope I can also find some time to play with your UBitx Manager.

Taking this opportunity, I would also like to comment that you are doing a very excellent job with your version of firmware for UBitx, and we as users must feel very lucky for that. Please keep the good work.
 
Very sincerely,



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

Re: Case

ekelley
 

Very nice work, looks great!

On 2/5/2018 2:06 AM, Sajeesh Pilakkat via Groups.Io wrote:
Dear All,

Inviting you all to have a look on uBitx Case Home brewed.

http://vu3psz.blogspot.in/2018/02/ubitx-home-brewed-enclosure.html

Re: uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Jack, W8TEE
 

Hi Ian:

I think you should consider it, as you have lost all type checking across files by making them all *.ino files. Obviously, this has not been a problem, but might be in the future. Just a suggestion to restore type checking.

Jack, W8TEE



From: Ian Lee <kd8cec@...>
To: BITX20@groups.io
Sent: Monday, February 5, 2018 6:04 PM
Subject: Re: [BITX20] uBITX Firmware (CEC) 0.30 released (Test version). #ubitx

Jack.
Thank you for your attention and advice.
I first used Arduino. So I thought that Arduino was this style.(I did not know.)
I also decided that it would be nice to keep the original name in order to share code in github. In fact, some or all of my code has been merged into someone else's project.
On the other hand, I received a pullrequest request from someone else and my code was modified.
But now I was wondering if I should keep this style with little or no original source left.

I released it to version 0.35 a few hours ago.It's got more features than I thought with the help of many great people. they has good idea and good suggestion.
I have put all the functions I wanted to put in, except to build in wspr. So going to release Major in 1.0 soon.
I think this issue should be reconsidered at that point.

Thank you again for your interest.

Ian KD8CEC

2018-02-06 6:54 GMT+09:00 Jack Purdum via Groups.Io <jjpurdum@...>:
Hi Ian:

I was wondering if you had plans to convert the support files for your software to *.cpp files from their current *.ino secondary file names (except for ubitx_30.ino)?

Jack, W8TEE


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


New file uploaded to BITX20@groups.io

BITX20@groups.io Notification <BITX20+notification@...>
 

Hello,

This email message is a notification to let you know that a file has been uploaded to the Files area of the BITX20@groups.io group.

File: ubitx_V2_00R.zip

Uploaded By: Jim Sheldon

Description:
Latest NON I2C release from W0EB/W2CTX - ubitx_V2_00R contains totally restructured menu system - SPLIT is working - slight rewiring of CW Key Jack is required but this VASTLY improves the CW keying - full instructions are included in the PDF manual -- see README.TXT in the zipfile for change details. File has been replaced due to newer instruction manual contained in the zipfile.

You can access this file at the URL:
https://groups.io/g/BITX20/files/%23ubitx%20ubitx%20release%20software%20from%20W0EBW2CTX/ubitx_V2_00R.zip

Cheers,
The Groups.io Team

Professional Programmers

James Lawrie
 

Ive been on this group for awhile now and noticed posts from others in past that they were professional programmers and such. 

If this is true and you are proficient at programming for PIC, ATMEL, MSP430 series and or DSP MPUs using C or Assembly I would like to discuss a plan with you for a project I need help with that will be of benefit to everyone on this site. I can pay for your services but in the end it will be Open Software. I’ll even provide the parts, please let me know.

People might like a better option than what is already here.

Thanks,

Plastic vs Metal Cabinets

Mike Lichtman
 

I know that Farhan has recommended a metal enclosure for the uBitx but I see many people using plastic. Has anyone
who has a plastic enclosure encountered any problems with it so far? By the way, I ordered on 12/17 and received
an email that it was shipped today. 73 Mike KF6KXG