I always start by testing the CW output to verify that the power amp is working.? If no power on CW then most likely it is a Q90 failure.? To test Q90 measure the voltages on each of the three stubs.? The values are listed in a spreadsheet that is stored in the files section of this board.? Search for vu2zap (Raj is the person who took and posted the voltages).? Note the test conditions that are listed in the spreadsheet, and be sure to have a dummy load (or tuned antenna) to the radio when transmitting.? Q90 voltages should be tested in SSB mode with no audio into the mic. /g/BITX20/files/VU2ZAP73 Evan AC9TU
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Cw Finals seem very warm and power output lower
Been working some CW and V6 seems to be running a lot warmer than it did on SSB and I ran FT8 but didn't notice the cas getting as warm as it was now.
could the finals be going.
What check looked at is there test points to look at?
Chuck
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First of all thank you for answering my question, I am not getting power output, the mosfet transistors are in good condition.
That's why I was asking about the test points.
Thanks again!!!
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uBITX V6 LIMITING POWER OUTPUT
Dear All, ??? Good Day.I am using uBITX V6 for 11 months and I am getting good reports. Now I want to add a linear amplifier so that I can work? more distant stations. For using the linear, I have to limit the output power from the BITX within 5 Watts. ???? 1.From few posts and you tube video, it is understood that the output can be controlled by adjusting the drive to PA finals. In this regard, I think that, the input voltage to UBITX (in stead of 12V) can be reduced which will also result in minimising the output power.If this option can be adopted, what is the safe minimum voltage that can be applied to the input of BITX radio? ? 2. Further, in CW mode, I am getting spikes in power output at the commencement of each transmission.As per suggestions in various posts in the group, I fitted few CLIP ON FERRITE R.F.CHOKES at few points, cables etc. But the problem persists. So even after adjusting the drive to PA, the spike/surge? in power output from UBITX can harm the Linear. Is there any other option to eliminate the spike in CW? ??? I request the group members/experts to give valuable guidance. ???? With best regards and thanks in advance, ??? MUTHU ??? VU2LMN +919443114779
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Re: ubitx v6 cat-only operation firmware
Yes, the firmware replaces the one shipped (and indeed, my fork is
derived from original firmware Farhan's code). Basically a rip-off,
leaving just the revised CAT and si5351 functions.
Rafael
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On 4/23/21 3:33 AM, Pierre FK8IH wrote: My question is : does the firmware you are elaborating can totally
replace the original firmware loaded in uBitx as they are sold by
HFSignals?
73 - Pierre - FK8IH?
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Mike,
Thanks for the confirmation.? I just picked up a set.? I've been meaning to do this for a while.
??
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73,
Brian - N8BDB
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Re: ubitx v6 cat-only operation firmware
My question is : does the firmware you are elaborating can totally replace the original firmware loaded in uBitx as they are sold by HFSignals?
73 - Pierre - FK8IH?
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Re: ubitx v6 cat-only operation firmware
I don't really understand your question, Pierre.
Rafael
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On 4/22/21 9:38 PM, Pierre FK8IH wrote: Is your project a standalone firmware or does it come in complement to
the basic uBitx firmware?
73 - Pierre - FK8IH
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Re: HF newbie. Propagation questions - with pix!
Robert
Look again you are on bitx list, all manufacturers tend to be welcome here if it relates to ubitx etc.?
Let's NOT jump to conclusion that he needs a baby filter, he would be hearing AM broadcasts very likely if he did.?
Scott
Prop changes. I have been in cw segments lately sometimes with scarce stations. Also lots of variation in what short paths are open. Let's get more data on receive. For the ubitx on 20m I expect only a small increase in noise when you plug in antenna. Expect big signals often on ft8. If after listening to ft8, you can tune around and successfully find some weaker signals that is a great sign.?
Curt
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Re: ubitx v6 cat-only operation firmware
Is your project a standalone firmware or does it come in complement to the basic uBitx firmware?
73 - Pierre - FK8IH
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The v5 and v6 are almost identical.? The only differences are board layout and the controls and jacks were moved to the mainboard to make for a solderless kit build.? You can use the v6 data for any of the test points.
It would be more helpful if you asked what you were looking to measure or explain the reason you want the test point data.? I am not aware of a comprehensive test point data compilation.? As problems have come up for builders the community has measured points on the board to help solve a problem.??
The above is my understanding after monitoring and contributing on this board for over 2 years.
73
Evan
AC9TU
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Related to this, it looks like mpja has the axicom D2n relays at a good price.? Are these the ones to use to replace the relays in the ubitx based on this post?
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73,
Brian - N8BDB
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Is the test point data for UbitX Version 5 available?
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Max, I'm gonna make you a happy camper.
Bob ¡ª KK5R
On Thursday, April 22, 2021, 3:33:01 PM EDT, Max via groups.io <kg4pid@...> wrote:
There are thousands of companies that sell electronic parts, are you going to post a link to these as well. I hope not!
As a member to a lot of groups I get tons of emails a day. I'd rather see questions and answers in the groups, not ads. Either of those can contain links for more information.
But if I wanted to see an ad for MPJA I would subscribe to it. I don't feel like it should be placed here!
Max KG4PID
On Thursday, April 22, 2021, 02:13:12 PM CDT, Bill Cromwell <wrcromwell@...> wrote:
Hi Max,
Think it through. That company sells electronic parts. Many or most of
the uBitX owners modify the radios - some radically so. We need parts n
pieces to do that. MPJA sells those parts n pieces. How is this not to
do with uBitX?
73,
Bill KU8H
bark less - wag more
On 4/22/21 3:05 PM, Max via groups.io wrote: > Curious why you post these every week? This has nothing to do with the > uBITX ! > > Max KG4PID > > On Thursday, April 22, 2021, 01:52:16 PM CDT, Bob Lunsford via > groups.io <nocrud222= [email protected]> wrote: > > > > <> >
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Re: ubitx v6 cat-only operation firmware
I'm enjoying doing all from the computer, especially the calibration
procedure! Btw, is the first IF frequency also a good variable to be
accessible through serial command?
Rafael
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On 4/22/21 1:57 PM, Gerald Sherman wrote: Rafael's idea sounds very interesting.? I am probably going to order a
complete '6 soon.? This would be an improvement over that small screen
for my old eyes.? I will likel? set it up on my netbook running Linux
Mint and using ht Fldigi software.
Gerry, VE4GKS
Sent by the Thunderbird
On 2021-04-22 10:37 a.m., Rafael Diniz wrote:
Hi all,
I'm developing a firmware for use without the screen, just over CAT,
with some pins assignments for my project needs, but which can be easily
wiped out. A totally new protocol is used for CAT control with full 1 Hz
precision on frequency, BFO and Mastercal commands, soon to be
documented. Also the userland is present in tools folder:
Rafael
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I have found some interesting items to incorporate into my uBITX builds.? I am building my own version of a Raduino that will incorporate a 100 PPR (Pulse Per Revolution) encoder that I purchased from MPJA.? Over time, I have bought wire, hardware, connectors, etc. from them.? I enjoy perusing their virtual flyers.
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I think the posts are appropriate when the company has a special that is directly relevant to the BITx, like when they had a sale on the relays that are used to modify older models. Posting during weeks when they aren't offering something relevant isn't as appropriate.
There are thousands of companies that sell electronic parts, are you going to post a link to these as well. I hope not!
As a member to a lot of groups I get tons of emails a day. I'd rather see questions and answers in the groups, not ads. Either of those can contain links for more information.
But if I wanted to see an ad for MPJA I would subscribe to it. I don't feel like it should be placed here!
Max KG4PID
On Thursday, April 22, 2021, 02:13:12 PM CDT, Bill Cromwell < wrcromwell@...> wrote:
Hi Max, Think it through. That company sells electronic parts. Many or most of the uBitX owners modify the radios - some radically so. We need parts n pieces to do that. MPJA sells those parts n pieces. How is this not to do with uBitX? 73, Bill KU8H bark less - wag more On 4/22/21 3:05 PM, Max via wrote: > Curious why you post these every week? This has nothing to do with the > uBITX ! > > Max KG4PID > > On Thursday, April 22, 2021, 01:52:16 PM CDT, Bob Lunsford via > <nocrud222= [email protected]> wrote: > > > > <> >
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Changed the "Processor" to "ATmega 328p (old bootloader)". That did it! I succesfully
uploaded software to the radio. As a "hello world" experiment, I changed "LSB" to "PSB" on
the front panel. Yup, it did it. Time to go read some code.
- Jerry KF6VB
toggle quoted message
Show quoted text
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There are thousands of companies that sell electronic parts, are you going to post a link to these as well. I hope not!
As a member to a lot of groups I get tons of emails a day. I'd rather see questions and answers in the groups, not ads. Either of those can contain links for more information.
But if I wanted to see an ad for MPJA I would subscribe to it. I don't feel like it should be placed here!
Max KG4PID
On Thursday, April 22, 2021, 02:13:12 PM CDT, Bill Cromwell <wrcromwell@...> wrote:
Hi Max,
Think it through. That company sells electronic parts. Many or most of
the uBitX owners modify the radios - some radically so. We need parts n
pieces to do that. MPJA sells those parts n pieces. How is this not to
do with uBitX?
73,
Bill KU8H
bark less - wag more
On 4/22/21 3:05 PM, Max via groups.io wrote: > Curious why you post these every week? This has nothing to do with the > uBITX ! > > Max KG4PID > > On Thursday, April 22, 2021, 01:52:16 PM CDT, Bob Lunsford via > groups.io <nocrud222= [email protected]> wrote: > > > > <> >
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Brian Bowling
Bob Lunsford
Shirley Dulcey KE1L