Hola,

he subido un pequeño documento PDF con la descripción del proyecto. https://github.com/ramonlh/ubitx32/tree/master/doc

El estado actual es que las funciones básicas están en funcionamiento. No funcionan IFS ni ATT.

Las cosas que tengo que hacer de forma inmediata:

• Completar las funciones que faltan: IFS y ATT.
• Completar las páginas web faltantes.
• Probar CW en transmisión.

Como explico en el documento, el desarrollo está hecho con UECIDE y no sé si compilará con Arduino IDE. UECIDE es sencillo y mucho más rápido al compilar. Si alguien está interesado en compilarlo estoy a su disposición.

Saludos,
Ramón
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Ok I’ll try to get the antenna up higher, I’ll need to get a telescoping mast first though before I can try that, I’ll probably be ordering one soon

I do the antenna set up parallel to the power lines, but they are over 100 feet away, I don’t know if that would still cause a problem?

Hello Markus. Yes, my friend has been able to use his V6 on CW now and while not a perfect CW radio, it does work. Your issue sounds like you may have the plug wired incorrectly or need to select the type of keying you want to use from the menu. For example, if you are still set for an internal keyer, but connect a straight key, the uBitX will try to send a string of dits or dahs whenever the key is pressed. What type of key are you using, how is the plug wired, and what keyer type is selected in the set up menu?

=Vic=

Aaron,
I believe that the v6 comes with the Iambic keyer enabled.  In the setup menu, there should be an option to set it to a straight key.  Try that and see if it works.

NOTE: I do not have a v6, so I cannot verify the menu settings.
73
Evan
AC9TU

I'm having a little issue hooking up a keyer to the uBITX and I'm pretty sure I'm either missing something or doing something wrong. When I plug in the keyer of just the cable to the keyer and put the uBITX on CW it just sends out a string of dahs. Any ideas will be helpful. 
Oh the keyer is a homebrew CW Keyboard (I have nerve damage and can't send CW) When I plug in a set of paddles it works as is should. 
--
'72

belthur,

One other thought, The RF could be coming in through the mic cord.  A snap-on ferrite and 0.01 uF bypass caps on the input to the ubitx could help if that is the issue.

73
Evan
AC9TU

Are you amplifying the mic at all?  Do you have another receiver that can be used to verify the output of the ubitx?

The only way to be sure is to measure the output.  What I have done is build a -50 db tap (My measurements were -45 db actual) to sample the output of the ubitx with an SDR (RSP1A) based spectrum analyzer.  If you have an SDR dongle of some sort, there are free SA software packages for them.  Here is the -50DB tap that I copied:
http://www.ad5x.com/images/Articles/Tap50dbRevA.pdf
I used a two-tone generator built from a kit to drive a BlueTooth speaker with the volume at about what I expected a person speaking to be, and then held the mic at about the expected distance from the speaker.  You may also need a step attenuator depending on the power of the amp.

Others have used another receiver with the ubitx connected to a dummy load and the receiver with little or no antenna to lower the input signal.  This works best if you have a waterfall display on the receiver.  Again, an inexpensive SDR dongle like an RTL-SDR can work.

I would first verify that you do not have any issues with the barefoot ubitx, then go on to the output of the amp.  When I did similar measurements for my rigs, I found that it was easy to overdrive both the audio and then the input to the amp.  I am currently waiting on a 7 element low pass filter for the amp, as the harmonic output was not within FCC requirements with an eBay 100watt LPF kit that was based on 5 element filters.  I also have a -6dp pad in the works to drop the output of the ubitx to below 5 watts.

FWIW
73
Evan
AC9TU

Checked. CW is just fine. How do I avoid audio overdrive?

Thanks. No, my uBitx case isnt grounded. I will fix that. I will also try a Balun. 

Thanks.

My first guess would be RF back into the ubitx.  Especially since it is with the linear amp on.

Do you have the ubitx in a metal case, is it grounded, do you have a common mode choke on the coax to the antenna, and maybe a snap-on ferrite on the line to the amp?

Does CW have the same issue?  If not, then you could be overdriving the audio causing splatter which will feedback into the Nano control lines.

I would start by making sure the case of the ubitx is grounded.  Then I would do the CW test and verify that it is not overdriven audio.  If the problem is still there, then I would start looking for a common-mode current reduction on the coax lines.  For me at lower power snap-on ferrites around the coax have worked.  At the higher power, you may need to make an ugly current balun.
http://www.hamuniverse.com/balun.html

The above are just suggestions.  Your situation may not be the same as the ones that can cause the above, though it is most likely.
73
Evan
AC9TU

Hello Vic and Reed,
at first please forgive my English, I'll try to do my very best.
My problem is, that my ubitx V6 only sends dits and no dahs. At least the audio output let's assume that.
I have tried to morse with my straight key and with the baofeng ptt-mic, which was sent along with the full kit.
I could not follow your conversation completely due to my lackings in English. -How can one solve this problem? Have you been succesful? Could you get your friend on air with cw properly?
Thanks a lot and kind regards from Germany
Markus, DO4DB