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The only way to solve the CW issue is to get rid of the voltage divider! r0n

Hi John, I hide imperfections around a rectangular hole in the front panel with a bezel. Those will hide a lot of sins. They are also easier to fabricate with straight, clean edges. Riy=ugh edges that

Perhaps a bit off topic, but here goes... In a recent post, looking for a 40M QRP SSB kit , Fred (K3TXW) explained, "...I have problems making a rectangular hole in a piece of aluminum of exactly the

I am having a keying issue with my ubitx v4, with CEC 1.08. On cw around 20 to 25 wpm, the first dit does not transmit, like sending an "R"..dit dah dit. The first dit engages the change over from rx

Sorry Jim I didnt know that document existed thats the first time I've seen it. Thanks Sunil I will have a read. Funny thing when I looked at the circuit I was thinking of Q12 as a possible connection

Selling my uBITX v3.? I just don't use it enough to justify keeping it around.? Works great.? Includes: uBITIX v3 purchased last year. EF01 case with 3D printed front/back panels WITHOUT my call

Perfect!? Thank you Sunil.? This is even better than the one I first saw and forgot to save.? I saved this in several places now so I won't forget it again - LOL. 73 Jim - W0EB

Here is the download link JIm /g/BITX20/files/AGC%20BITX%20UBITX/AGC%20Details.pdf?fbclid=IwAR3gsSFpIW-WgVlFpl3Q9lQjie_gkdJpBMgKUGTwSM_vSECmRuJ3xRHH6cs

Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the [email protected] group. *File:* AGC Details.pdf *Uploaded By:* Sunil Lakhani

I have not tried at higher voltage. With relay change the harmonics drop a lot specially in lower bands. Alsong with harmonics the spurs drop. L5/7 change will help more but can do without. What is

The only way to do a Mkars80 conversion is to change the IF to? 12 Mhz and make all the corresponding changes of which there are many.? ?If you want a correct frequency display you will have to get

Set the BFO to 11.9965 and see if that works.

This is for the bitx 20 it goes to the base of transistor? Q2 and ground. Altering the gain at the 1st IF transistor. Is this the board you are refering to? I am not sure you can use that AGC board

This one ( http://1.bp.blogspot.com/-weRlvoq9Xos/U-yEV49cuhI/AAAAAAAABn4/Gsf3hvCpgJQ/s1600/AGC%2Bdetails%2BBW.jpg ) Jim? -- John - N0CTL - Fulltime RV in a 40' motorhome

Here is a power resistor I used in another dummy load. These could be an alternative if the ones specified for this project are hard to find. https://www.mouser.com/ProductDetail/605-RHXH1Q100R0F4 I

Did you mean this one? https://www.ebay.com/itm/LM386-Electret-Microphone-Power-Amplifier-Board-Gain-200-Times-DC-3-7V-12V-Pi-LB/153193602065?hash=item23ab0cdc11 wrote:

Raj, what are the spurs like when running finals at higher voltages. 24v has been suggested.

Better yet, repeatedly do both steps until no further adjustment is needed. I have no idea how the two different adjustments might affect each other with the firmware you are using.

I don't know what firmware you are using or what instructions you are following. Tuning for zero-beat makes sense to me when calibrating the si5351 reference oscillator so the rig is on the correct

After relay change my uBitx 4.3 is now capable for legal CW QSOs. So I did the next step and changed L5,L7 and L1 to 680 / 330 nH. The first test on SSB via dummyload and 20db extra attenuation direct