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Hi Jerry, Good points. Yes, using an si5351 as a tracking calibration source should work well. Tom, wb6b

What was “the mod suggested for the v5 board “? Anybody out there built a Sweeperino or Specan? I have gathered some of the parts... In November Ashhar wrote “where the 12 mhz from the bfo leaks

Calibration is what I was driving at with my previous post, but should be easy enough to take care of. We need at tracking generator, the si5351 might do. It gives a square wave, but an SDRplay can

I too have been thinking on how to make this modification, though after looking at some pictures of the RF Gain modes where he did drill through the board to get a ground was looking like a good way

Hi Woody, ? Thanks for your interest in the smart filter controller. As I answered your question via email, I'll include the core of the reply here for others that may have the same question. ?

Dave I am thinking avoid drilling hole.? one must disconnect at R27 somehow to insert this new filter.? I think grounding C205 to some location near where you new filter will sit is most important -

I'd looked at the SDRplay receivers some time ago, with the upgrade to the ADC this looks like a promising SDR. On the comment about the sampling rate and span that can be seen at one time. With

Can see your point Wayne I thought I had attached images of them Will try again. I have several cases that are big enough X and Y But too shallow in the Z would need to lay down the display and

Uhm, and? LOL I have 2, and an unassembled BITX20. the exciter for the 20 says 40, but it'll be 20 when I get it done. I spend a lot of time not feeling well, and get delayed. need to start clearing

Have 4 of these critters in our hamshack.

Perhaps Bill's point was that pushing a stereo plug into a stereo jack can somehow momentarily short one of the signals to ground. A 4 ohm resistor between uBitx main board and the headphone jack

Jerry How I get around the mono/stereo problems is to wire the headphone jack onto the two end posts only. I let the base float. Stereo headphones are in essence wired in series. monaural works the

If you happen to have only stuff with mono plugs and sockets lying about, that's a good solution. But all new headphones these days are stereo, so you might need an adapter to go from mono to stereo

I am going with Gordan Gibby's daughter board that just hosts 3 relays, mostly because my local club kitted this solution - and other than cutting traces there is little rework to the main board.? I

I do not have a momentary short on my audio jack as the ring (the middle connector is not wired to anything. I do not expect to ever listen to stereo on the frequencies this covers and so I just left

Oops Not solve all problems......

Glue on a heatsink, although this will solve all problems, it helps. Adrian [email protected] wrote:

I did fry a non wx tda when I first assembled the boards and the volume potentiometer connections were reversed. Rewiring correctly and replacing it solved the problem. I haven't added the voltage

Uwe, In particular, how much dynamic range are you seeing when using the RSP1A? For example, looking at the output of a 10 watt uBitx transmitting at 7mhz, going into a 40dB attenuator for a 0dBm

Uwe, Yes, I remember your post, and did look at Steve's software effort. Can you say anything further about how well that RSP1A working for you as a spectrum analyzer? I did not notice till yesterday