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HI All, Getting ready to convert over to using the si5351 for the BFO. I'd like to use rg-174 for both the VFO and BFO lines. The Si5351 has three outputs. The first is already routed on the PCB to

The wire up instructions are pretty good down to a certain point.? When you get to the section of Alignment of the BITX40. Notice #5 is blank. Why it is blank is unknown. But this is where you can

Off topic, just feeling my way through on this specan stuff. ? The AD8310 is spec'd for a maximum input of +/- 2 volts pk-to-pk, or 4 dBV. ?So I'd want at least enough gain after my level 7 mixer

Should work as expected if you increase the gain of the microphone amp: ?/g/BITX20/message/24437 ( /g/BITX20/message/24437 ) Assume you raise the signal coming out

This was always tricky when building multiband homebrew, that's why many went for single band design, building up a bank of boxes one for each band. Good luck Ashhar. 73 Steve G1KQH

I listened to it. Everything I have read and heard, all are the same. It's great to help being heard through QRN or QRM, There are different ways to do it like audio clipping or RF clipping. And lots

Ash, I'm still gathering parts for my first build of your uBitX (and your Specan!) and have not even started to draw the boards, so adding filters and tweaking the code for switching bands appears

i have measurer the input impedance of these stages to be appox 50 ohms when terminated in the 220 resistor in the output. i made these measurements with a homemade return loss bridge and the

Wow... Impressive, cannot wait for this. Am following closely the uBitx. Better get space cleared for it. Thanks Ashhar Phil-G7BZD

with the 4 filters you get 3.5, 5, 7,10,14,18,21,24.9 and 29 mhz - f

The cost of what I call Beta Boards is pretty high, as Jerry points out. However, once the design is set, the costs fall dramatically. I ordered 200 small boards (2"x3") at about $1 each for a recent

OSHpark is the best I've seen on small runs: ?http://docs.oshpark.com/services/ ( http://docs.oshpark.com/services/ ) For $5 per square inch, you get three double sided boards with soldermask and

Have you tried using the Mitsubishi RD16HHF1? ? Thanks Burton IsonW5IAC

Farhan, Let me first thank you for the projects and experience you share with us. I am interested to find out how uBITX behaves in terms of selectivity and sensitivity? I also support the idea, that

I agree that a Muppet board would be a great way to go, since it moves away from drilling holes. The only way I've had any success with thru-holes was when a friend availed his drill press for me to

Building for myself, I'd try leaving the extra filters out. ?Use an EFHW wire with a tuned impedance matching circuit. ?Though if mass produced, it really needs an output filter at the amp.

She is alive again! ?I replaced the audio amplifier last night and she came right back to life. ?Thank you all for your help.

https://www.blubrry.com/arrl_the_doctor_is_in/21698901/speech-equalization-compression-and-processing/ Speech Equalization, Compression and Processing *March 30, 2017* va7jbe@...>

How many bands will this cover, and does selecting 80m rather than 40m make a difference. Still very interested. Phil G7BZD

Hi! Farhan.. I guess your results hold true for other 510 PP amps as well when used with other exciters as well...!!! Rahul VU3WJM?