Date   

Re: Ubitx V.5 No Receive

Doug
 

Hi Evan
I checked.... It is a V.5.. Printed on the pcb.. It has an IM 386 ic and the crystals are 11.059...
So, when I go to BFO frequency, the frequency should be 11.0555 mhz? I have a lot of turning to do.
It is at 11.995 mhz.....
I will wait till you verify before I start to adjust it.
Thanks again Evan...
Doug


Re: opriginal v6 software

Evan Hand
 

The original is 6.1.  You can get it from Ashhar Farhan's GitHub account:
https://github.com/afarhan/ubitxv6

There is also a How-To video from Ashhar Farhan:
https://www.youtube.com/watch?v=3n_V3prSJ_E&feature=youtu.be

I hope this helps.
73
Evan
AC9TU


Re: uBITX v6 is now DEAD !!!!! #v6

Andrew, K7UL
 

Hi Ralph,

You do want to select the processor setting as ATmega328P Old bootloader.
Also, you will want to the Arduino programming IDE to load the source code.  After you move the code to the Arudino directory, you need to then load the .ino file.  Click on the file, and a new IDE should pop up with the code on your screen.  Set your processor settings, com port up and then the arrow button to upload it.

It may tell you that the code needs to be in a directory called .... what ever the .ino is called.  Hit yes, and let it do it.
At that point I would move the rest of the code into that directory.  It should be C:\xyz\Arduino\ubitx_V6.and so on.

You should be able to compile it at that point.

Later to repeat opening this project, you should be able to open the IDE, and select file, open recent and select the ubitx code.

Hope this helps.  73


Re: Ubitx V.5 No Receive

 

Should be 11.055,5 It's close enough.

At 28/03/2020, you wrote:
Hi Raj
Thanks for that info. Saved me a lot of turning...
Do you know what the approximate frequency of V.5 should be?
Doug


Re: Ubitx V.5 No Receive

Evan Hand
 

Doug,

Are you sure it is a v5?  That would be closer to a v4. There are two ways to tell:
1 - There is a version # printed on the board
2 - Check the crystal filter crystal frequency stamped on the top of one of the 12 crystals that are all in a line. A v5 is 11.059, a v4 is 12.000 

Another way is to check the audio circuit. The v4 uses discrete transistors, the v5 has an lm386 ic for audio output. 

If a v5 OR v6 bfo were set to that frequency, it would be deaf. 

The BFO needs to be set approximately 3.5 KHz below the crystal frequency, with final adjustments for each board. 


Check the version number and then go to the BFO calibration page 

Hope this helps,
73
Evan
AC9TU


Re: Fun Microphone

twowindsbear@...
 

I also have a D-104 without an element.  How about a bit of a tutorial on how to install this element?  Thanks & 73 


Re: Ubitx V.5 No Receive

Doug
 

Hi Raj
Thanks for that info. Saved me a lot of turning...
Do you know what the approximate frequency of V.5 should be?
Doug


Re: Ubitx V.5 No Receive

Doug
 

Hi Ed
I checked with an ohm meter from the center connector of the coax to TP1 on the printed board. That is thru the low pass filter. I have continuity.
I could possibly have a cold soldier joint on the pcb. If nothing else seems to works, I will pull the PCB out of the case
and start reheating connections on that path. Thanks for the suggestion.
Doug


Re: Ubitx V.5 No Receive

 

Wrong firmware Dough! that BFO frequency is for V3 if I remember right.

Raj

28/03/2020, you wrote:

Hi Evan
I have a question. You said that the BFO frequency for V.5 is around 11.0555 mhz. Mine is at 11.995 mhz. That is a long way off. A lot of turning.
Doug


Re: Ubitx V.5 No Receive

Doug
 

Hi Dave
Thanks for the PDF. Very helpful.
Doug


Re: Ubitx V.5 No Receive

Doug
 

Hi Evan
I have a question. You said that the BFO frequency for V.5 is around 11.0555 mhz. Mine is at 11.995 mhz. That is a long way off. A lot of turning.
Doug


Re: #v6 question on uploading software #v6

KB9WOO
 

This is exactly what I needed. Thank you!
--
Mark, kb9woo
Milwaukee, WI uBITX v6


Re: Ubitx V.5 No Receive

David Nelson
 

look back in the group. They had a problem with some of the bnc
 connectors shipped with the kits. The center hole being to big for
the pin on the mating connector. I know mine was like that.I just bent
the pin slightly and it worked fine.  Dave  kc2ipx


Re: Ubitx V.5 No Receive

Edward Reynolds
 

Doug
 With no change in air noise volume connecting antenna I’d look at the antenna connector soldered joints to the board and pl259/BNC connector. Going from no antenna to a antenna you should hear a increase in air noise volume. So look for a cold/bad solder joint and verify the correct wiring of antenna board and back of case BNC/PL259 connector, they could be switched. Just a thought! 
Ed


On Mar 28, 2020, at 5:30 AM, Doug <69chevynova@...> wrote:

Hi Curt
Thanks for your response. I do have a cw sidetone and it is loud with the volume turned up.
I hear the relay click when I transmit. I measured continuity from the coax center connector to TP1 which passes thru the low-pass
filter. I also can tune a couple birdies across the spectrum that are quite loud. So I think the audio circuit is fine.
I have a low level rf noise on receive, but it makes no difference in the level with the antenna connected or not. The rf noise sounds
like a receiver with the antenna disconnected. If I transmit with another transmitter, I can hear the cw tone loud with one or two watts .
It makes no sense to me.
Well Curt, thanks again and if you think of anything else I would appreciate the info.
Doug
 


Re: Fun Microphone

ohwenzelph
 

What was the 10cent element?


Re: Ubitx V.5 No Receive

_Dave_ AD0B
 

Definitely check the alignment. I have seen very deaf receivers caused by miss alignment.  If that doesn't do it, it should be very straight forward to trace the signal. You don't really need much in the way of test equipment. You might start with a probe on the input of the audio amp.

Ashhar has kindly put in many test points that you can test from.  More or less follow the yellow brick road back to the antenna.

This drawing outlines both the transmit and receive signal paths
73
Dave
ADOB
Raduino bracket and Ham_Made_Keys


Re: Ubitx V.5 No Receive

Doug
 

Hi Evan
Thanks for your response.
No, I did not use the method you suggested but will try it soon. That may be the answer.
I do not notice any difference in the rf level in the receiver with the antenna connected or disconnected.
The rf level is very low. I can transmit with the Ubitx just fine.
I hear a few birdies across the spectrum and they can be quite loud with the volume turned up.
I have continuity from the coax center connector to TP1 which passes thru the low-pass filter.
If I transmit with another transmitter with one or 2 watts I can hear it loudly on the Ubitx receiver.
It makes no sense to me, but I will do the BFO calibration as you suggested. I will let you know the
outcome when I'm done.
Thanks Evan
Doug


opriginal v6 software

dave <dgclifford@...>
 

where can i download the original software that was installed on my v6 when produced in india


Re: Ubitx V.5 No Receive

Doug
 

Hi Curt
Thanks for your response. I do have a cw sidetone and it is loud with the volume turned up.
I hear the relay click when I transmit. I measured continuity from the coax center connector to TP1 which passes thru the low-pass
filter. I also can tune a couple birdies across the spectrum that are quite loud. So I think the audio circuit is fine.
I have a low level rf noise on receive, but it makes no difference in the level with the antenna connected or not. The rf noise sounds
like a receiver with the antenna disconnected. If I transmit with another transmitter, I can hear the cw tone loud with one or two watts .
It makes no sense to me.
Well Curt, thanks again and if you think of anything else I would appreciate the info.
Doug
 


Re: Okay last time questions and then i quit

Rene
 

And the story🤣😉, okay thx for fast reply, the receiver i used, the yupiteru, is on ssb, i tryed both, usb and lsb.
The peeeep is also when i just put on a stereoplug in the mike hole and connect (shortcut) the ptt. I shall try what the readings are on cw. I have a few times recaibrated the radio, yesterday on china radio 15.350khz.
Then bfo, then freq again and then again bfo. The receiver of the radio is good, i isten often to FT8 and phone. The wire antenna, 10 meter with a coil, gives me a lot of amateurs all over the world, even Korea, New Sealand , Us etcetc. 
I know a guy on my job, he got also his licence and i am gonna ask him for help. Problem is corona,no contact with other people but your family in your house...
So after work today, i gonna try to make time free again to play with the radio.. Thanks for answering you all.
Regards, Rene
Netherlands

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