Date   
Re: #v6 software #v6

Juha Lindfors
 

Tried to find it by myself also but no
luck. Anyway I downloaded the code and changed it a little bit. the link is on my pc and come back when beside it again.

73 Juha oh8cw

su 1. maaliskuuta 2020 klo 16.07 David R. Hassall WA5DJJ <dhassall@...> kirjoitti:

Dear Juha,
Thanks for the hint where Reed's code might be.   I took a quick look  But didn't find it right off.   But will try again later.
It seems that if a person misses a message on this website where something is..... It is gone forever.  

Take care and have fun.
73 Dave WA5DJJ

Re: #v6 software #v6

David R. Hassall WA5DJJ
 

Dear Juha,
Thanks for the hint where Reed's code might be.   I took a quick look  But didn't find it right off.   But will try again later.
It seems that if a person misses a message on this website where something is..... It is gone forever.  

Take care and have fun.
73 Dave WA5DJJ

Re: #v6 software #v6

David R. Hassall WA5DJJ
 

Dear Lou,

Thanks for the hint about the touch screen calibration.  I didn't know that it even existed.   So I will try that sometime today.  The basic setup and calibration procedures need to be a part of the main UBITX V6 WEBSITE and not scattered throughout this question and answer game that exists on the group.io area.
It is VERY difficult to find the basic setups you need to get this radio running because you have to sift through all the messages on this website  to find the basic information to get started.   That is what turned me off on the 40M BITX and it ended up on the shelf unfinished.

Take care and have fun.
73 Dave WA5DJJ

Efficient speaker for low volume #audiocircuit #ubitx

Don - KM4UDX
 

There are multiple spots to insert audio gain. Using a very efficient (96 dB 1W/1m ) speaker is one.

The speaker below is not small, but it has a sealed back needing  no accustic enclosure, sings the mid-range -- which is good for the average human voice.

https://www.parts-express.com/goldwood-gm-85-8-heavy-duty-5-1-4-sealed-back-midrange-8-ohm--280-115

I use it in as an external speaker with a "steam punk" esthetic.   The sound is dreamy to my ears -- I mean to the extent any signal on HF could be described as dreamy.

Re: #v6 software #v6

lou_w2row
 

Hello, I suggest you go through the touch screen calibration again. Push and hold the Tune knob on power up to enter the calibration. I believe you will need to do this every time you change Nano's, at least that has been my experience.

Lou

Re: New to BITX,simple questions

Evan Hand
 

The QCX is a CW (Morse Code) only single band transceiver.  There is one available for the CW segments that a Technician class can operate, just no SSB/Phone.  
http://shop.qrp-labs.com/qcx

Look up  ARRL Band Plan on the internet.  That will show you the segments that a technician class can operate on legally.

Here is a link to a specific page on Technician privileges (note, you may need to be a member to view it.  No way for me to check as I am a member):
http://www.arrl.org/files/file/Tech%20Band%20Chart/Tech%20Band%20Chart.pdf

73
Evan
AC9TU

Re: Only noise when connected to the antenna #v6

Evan Hand
 

Jonathan,

Are you sure the windings of the transformer are the correct polarity?  If you had one of the balanced mixer side of the transformer maybe not mixing properly.  You might also want to check the mixer diodes.

The above is assuming (as I had read in prior emails) that you have traced the signal all the way up to the BFO product detector stage.

Just ideas
73
Evan
AC9TU.

Re: #v6 software #v6

Juha Lindfors
 

Hi David,

Look for Reed's code in Github. I'm answering with phone now but can look at the link after a while.

Juha oh8cw

su 1. maaliskuuta 2020 klo 8.05 David R. Hassall WA5DJJ <dhassall@...> kirjoitti:

Dear Members,

 

I am getting back in the game with a new all band Ubitx v6.   In preparation of trying to put a NX display on it, I was learning how to download and program a Arduino NANO and see if it would work.   I bought some identical (I think) Arduinos from Amazon and after giving them an Alcohol bath to make sure they didn’t have the Corona virus on them.  I soldered the pin on the to match the existing Nano in the Ubitx.   The downloading and setting up the Arduino IDE went well thanks to Farhan’s Video.  In the tools my NANO’S would only program somewhat correctly when I used the ATMEGA 328P (old bootloader) option.  The other thing is that my programmed NANO’s would not allow me to select anything on the touch screen.

I did a visual scan of the chips, pin numbers, and resistors and the boards look to be identical.  Just as a check, I assembled a second board and programmed it and got the exact same results.   I am using Arduino version 1.8.12 IDE.  So, I am at a

Crossroads on what to do next.   I tried to find another version of the software and saw messages that said version 6.3.1 but it wasn’t on the Git Hub location that I could find. 

 

So my questions are:

Am I the only one that noticed this “feature”? 

Is there another working version of the V6 software somewhere that I can download and try again?

Is the software on the Git Hub site been checked lately.

Is there some other troubleshooting I can do?

 

I am glad I  kept my original Arduino intact with version 6.1 software on it and use other processors  to learn with. 

 

Any suggestions welcome.  I really like the sound of the radio.  It will be an asset to my learning and showing others that things like this are possible with perserverence and learning new skills.

 

Take care and have fun.

73 Dave Hassall WA5DJJ  Las Cruces, New Mexico

Website: http://www.zianet.com/dhassall/

QRSS SUPER GRABBER WEBSITE: http://www.qsl.net/wa5djj/

 

Re: New to BITX,simple questions

Peter LB0K
 

Regarding the QCX trcvr.
It isn't meant to work on 10m, or 12m or 15m. 

Am I right in suggesting it won't be much use for a USA tech license?

#v6 software #v6

David R. Hassall WA5DJJ
 

Dear Members,

 

I am getting back in the game with a new all band Ubitx v6.   In preparation of trying to put a NX display on it, I was learning how to download and program a Arduino NANO and see if it would work.   I bought some identical (I think) Arduinos from Amazon and after giving them an Alcohol bath to make sure they didn’t have the Corona virus on them.  I soldered the pin on the to match the existing Nano in the Ubitx.   The downloading and setting up the Arduino IDE went well thanks to Farhan’s Video.  In the tools my NANO’S would only program somewhat correctly when I used the ATMEGA 328P (old bootloader) option.  The other thing is that my programmed NANO’s would not allow me to select anything on the touch screen.

I did a visual scan of the chips, pin numbers, and resistors and the boards look to be identical.  Just as a check, I assembled a second board and programmed it and got the exact same results.   I am using Arduino version 1.8.12 IDE.  So, I am at a

Crossroads on what to do next.   I tried to find another version of the software and saw messages that said version 6.3.1 but it wasn’t on the Git Hub location that I could find. 

 

So my questions are:

Am I the only one that noticed this “feature”? 

Is there another working version of the V6 software somewhere that I can download and try again?

Is the software on the Git Hub site been checked lately.

Is there some other troubleshooting I can do?

 

I am glad I  kept my original Arduino intact with version 6.1 software on it and use other processors  to learn with. 

 

Any suggestions welcome.  I really like the sound of the radio.  It will be an asset to my learning and showing others that things like this are possible with perserverence and learning new skills.

 

Take care and have fun.

73 Dave Hassall WA5DJJ  Las Cruces, New Mexico

Website: http://www.zianet.com/dhassall/

QRSS SUPER GRABBER WEBSITE: http://www.qsl.net/wa5djj/

 

Re: Tuning knob

Gigabyte
 

I'm happy to report it was the encoder.  I purchased this I linked from eBay and replaced it and it's working beautifully.  Now on to getting everything tuned up.  😃

Re: Setup mode #v6

barry halterman
 

Power off radio, press the button in, then power up...


On Sat, Feb 29, 2020, 9:34 PM <ja8jdq@...> wrote:
I can't enter setup mode even if I try below.  firmware V6.31
 why?
  1. Power off radio
  2. Power on radio
  3. Press and hold tuning button for 10 seconds (or until menu comes up)

Re: Setup mode #v6

sam
 

I can't enter setup mode even if I try below.  firmware V6.31
 why?
  1. Power off radio
  2. Power on radio
  3. Press and hold tuning button for 10 seconds (or until menu comes up)

Re: Only noise when connected to the antenna #v6

Curt
 

Jonathan

Nice work getting used to a nice spectrum analyzer. And doing some calculations. Keep in mind the bandwidth at the receive output is about 3 kHz.

I suggest starting near the back of receiver and going forward. Turn the volume all the way down, place a signal within the IF of the 11ish MHz xtal filter, both before and after. BTW if you have a leftover xtal, easy to make a generator that outputs approx s9 and s3 signal levels, I homebrewed one from norcal qrp website. Or use whatever signal generator thats there, but highly attenuated. if that seems good, work your way toward front. Not a bad idea to check voltage bias of each Rx path amplifier.

Solder connections can look good and be bad.

Thinking ahead, for transmit you should find or make a dummy load. 4 2 watt 200 ohm resistors in parallel etc.

All those mixers have transformers, always possible the insulation isn't off a wire. When you check continuity, never touch wire but a connected pad is better than edge of solder.

I presume you checked frequency of each oscillator and its presence.

curt

Re: Only noise when connected to the antenna #v6

Jonathan Kayne, KM4CFT
 

Here is a capture of the (de)modulator from the spectrum analyzer. I Injected a 14 MHz sine at -60 dBm. On the uBitx v6 schematic this would be at TP20.
Again, turning on or off the function generator seems to not affect anything shown here and I suspect this is crossover from the other mixers and LO.

Re: Only noise when connected to the antenna #v6

Jonathan Kayne, KM4CFT
 

Okay, so I went through and recorded the gains and losses of each section. I did this because my RF mentor said that I should be able to easily hear a -90 dBm signal. Unfortunately this was a bit of an issue as the noise floor of the spectrum analyzer was above that.
Regardless, here is what I found going from antenna to audio:
LPF + 1st conversion: -9 dBm
Preamp 1: +18 dBm
2nd conversion: -8 dBm
BPF: -8 dBm
Preamp 2: +20 dBm
SSB filter: -8 dBm
final conversion: unknown

The (de)modulator stage does not seem to have a specified conversion loss so I am not sure what to do about that. Looking at the signal (with an oscilloscope) out of this looks like a noisy mess even without any incoming RF signal with tons of harmonics. I have attached a scope capture:

Turning on and off the function generator does not seem to affect this wave.

Something I have been considering is adding on another amplification stage between the LPF and the 1st conversion to bring the incoming signal from -90 dBm to -60 dBm because I suspect the signal would be falling below the noise floor.

Re: No RX LED indication #v5

Rick Green
 

On Sat, 29 Feb 2020, Brad, K7NNR wrote:

So I have double checked my connections and I have verified that if I switch the LED connector the LED will change from red to green when i hit the PTT. But I still cannot get it to light up when
in RX. It is not a big deal, but since I know it is supposed to it will drive me nuts until I can figure it out.
Here is a pic of the connections. Did I miss something obvious?
I assume you've checked carefully for solder bridges on those connections. There's very little room, and no dedicated thru-holes for those connections.

Are you open to an off-the-wall suggestion? Check continuity of the RX wire in that harness from the main PCB to the pin connector on the LED board. I pulled my hair out for weeks trying to figure out why my unit had no audio out, until I finally stopped assuming the obvious and discovered a bad crimp on one pin of a similar three-pin pigtail which I had used to wire my volume control. The 'high side' of my volume pot wasn't connected to anything!

--
Rick Green, N8BJX

We, the People of the United States of America, reject the U.S. Supreme Court's
Citizens United ruling, and move to amend our Constitution to firmly establish
that money is not speech, and that human beings, not corporations, are persons
entitled to constitutional rights.

http://www.MoveToAmend.org

Re: Kit_projects AGC V5 Volumne pot install question #v5

KE2GKB
 

Afternoon brad, Yes the connection is to the volume pot on the front of the board. The high side is the end that comes from the radio to the audio chain. So it would be the input to the potentiometer. In a typical installation it is the yellow wire from the AUDIO connector on the bitx main board. So it should be the leg with the yellow wire on the front panel volume control potentiometer

-- Tim Keller - KE2GKB https://shop.kit-projects.com

Re: No RX LED indication #v5

Brad, K7NNR
 

So I have double checked my connections and I have verified that if I switch the LED connector the LED will change from red to green when i hit the PTT. But I still cannot get it to light up when in RX. It is not a big deal, but since I know it is supposed to it will drive me nuts until I can figure it out.

Here is a pic of the connections. Did I miss something obvious?

Kit_projects AGC V5 Volumne pot install question #v5

Brad, K7NNR
 

I recieved my kit-projects AGC kit this week and am working on the install today.  When reading the install instructions there is mention of a volume pot connection. How do it determine what side is the "high" side to connect the wire from "V' to?

Can you also confirm that this is a connection to the actual volume pot on the front panel and not another pot that I need to add?