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There is quite a difference in price in the Log Amp Detector and Diode Detector options. Before I chose the cheaper route, what is the performance difference I will see in the display and are both

A couple of other interesting things about putting the extra 90 degrees in one filter.? Once the extra delay is removed, the 90 degrees is exact. The only sideband suppression errors are in the

The number of taps in the filter must be an odd number.?? Then the delay is achievable.? That is why I used 199 instead of 200.

Problem solved! One of the cables going to external watt meter must have had minimal shielding. It was not one of my normal double shielded cables. Hint was I was hearing RF in external speakers.

That oscillator on a small daughter card would be a great way to try this and other oscillators like it. Also… I did finally find FFs that operate in the GHZ region. I ordered a couple dozen so may

That should have been 15M… Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator

I have not looked at the code, but when we were all discussing the TX output calibration, we were going to have it set up BAND (that is, a different calibration constant for each band… this will be

Oh! Well PLEASE keep us up to date! Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner –

The oscillator could be anything you want to put on that oscillator board. Dr. William J. Schmidt - K9HZ J62K(J68HZ) 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch –

I was having fun working DX on 20 and 17M's today. Saw activity on 15, made a few calls noticed output in SSB was low. SWR was perfect (Steppir) so I decided to play with TX attenuation. Changed from

To clarify: in the 90/0 degree case, you still need to pass the data through the "0 degree" filter. Every FIR filter will impart a phase shift that increases linearly with frequency [will come back to

Hi Rob- Here's an example of a power supply board.? The switching modules are really good! https://github.com/Greg-R/T41-2_Power -- 73 Greg KF5N

Hi Bill, I'm just about to start populating a Main board that has the SGTL5000 and the SPI driver onboard. I've also done away with the 3.5mm Jacks and replaced them with JST connectors, along with

I like the idea of breaking the LO onto a daughter board that mounts to the RF board through header pins. That'll allow for more experimentation.

And, thanks for the comments, Terrance.? I agree with all.? Our posts crossed in the mail.

Thanks Oliver for the response curves.? Interesting to see.? Also, I had missed the sampling rate? on the v50 curve being 24 kHz.? I added a note to the index page to cover that. Unless I am

I made a production line of sorts and tested about 20 different Hilbert transform filters only to confirm what I learned during my DSP experiment days: "at a certain point, filter design is as much an

I would be in for some pre-populated boards to play with. and eliminating the issue with audio hat would be much appreciated (caused me a lot of headaches!) as to plug in oscillator board would it

OK, that's interesting because I measured 4.5 watts PEP with 30dB IM3 (40 meters). -- 73 Greg KF5N

Greg,' I believe it was about 4W RMS. Al