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That a lot of work and its gonna be hard to get the V011 QSE/QSD to work at and above 10M just because of the physical layout. It will be far smarter to just add the new V012 RF board and leave the

Thanks Bill I'd be surprised if a lot of folk don't want to modify what they've already built rather than binning most of it, especially as the existing 10/11 boards won't work on 10m. Certainly if

I suppose you COULD do that. You need to bypass the DIV by 4’s is all. There are some additional subtle things (like CW generation) but a little surgery will, indeed, make it work at least on SSB.

Is there any basic reason why V10 and V11 board systems can’t be modified to run the V12 software? There are obvious issues. Clk0 and clk1 from the Si5351 have to be run to QSD and QSE Clk2 has to

Open the web page for the group. On the top right click updated twice. That will result in a latest post sort.

i can't find it ----i'm using linux? do I look thru all 9 pages of files?

It's in the group's Files section on the groups.io website. Sort the directories by date. - Jerry

Files section of this forum… Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa

Al I'm getting quite confused with the? accolades you are awarding to the new V12 boards.? They seems to be amazing. Where can I see the schematics for all the V12 boards?? It's probably staring me

In RED below Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch - K9ZC Staunton, Illinois Owner - Operator Villa Grand Piton - J68HZ

Woops. Forgot some text - It was recommended to change them to 0 ohms, I did so. So easy peasy to try 3K3. Larry KB3CUF

I did this as recommended at the time- I intend to reverse this and use 3K3 to see if it helps.

Correct. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton – J68HZ

*** Won't work. In V12, they're not using the D flipflops. They're using one si5351a clock for each phase. - Jerry

* I *n V12 we have managed to reduce the carrier amplitude on SSB to almost -47dB below a sine signal at full amplitude. This was accomplished using 3.3K ohm series resistors in the IQ CLK0 and CLK1

*** What are the issues? I was reading about the Tayloe detector this morning. Apparently, it's not a mixer at all - rather a sort of commutated capacitor filter. I remember reading about those in an

There is more to it. Its not naturally balanced the way it is designed. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC

My QSE does not balance the carrier out well. I wonder if I could improve it by matching the IQ caps? - Jerry, KF6VB

Thanks Al… With the expanded frequency range of the T41 RF board (QSE+QSD), I suspect this little PA will be right at home. So far, I’ve sold over 800 of them and I will need to re-order

Hi Everyone, I have begun evaluating the *20W RF power amp by K9HZ* (Dr. Bill Schmidt) with T41 to address the increased T41 V12 frequency and CW capabilities. Some of what I have found is as follows: