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Ashhar, No I have not tried putting the antenna directly to c94 yet. Today my radio is receiving static and noise even on dummy load. Intermittent problems are so hard to troubleshoot

Ashhar, I was just reading the specs on U3. It says in the specs, The break?before?make select circuitry prevents disruption of signals on the B Port due to both switches temporarily being enabled

Have you tried connecting the antenna directly to c94?

Ashhar, My unit ch0128 goes from working normally to not receiving any signals to red to yellow on the waterfall even when on a dummy load.? It still receives stronger signals when its yellow.

Shout out to K3NG (and thanks for your efforts) just to let you know that your sbitx code also gets stuck when the process is trying to start up. Again this is with the original RPi 4 and a new

Unwind one turn from the PA secondary like Allison has recommended. I would also reduce the 10 ohms (two paralleled 22 ohm resistors) to 47 ohms by snipping off the resistor leads from one side and

I tried the 510 but they went bad very quick. What changes would you recomend if using 510 in place of the irfz24?

At these power levels, the IRF510 gain will be much better as it has half the internal capacitance of the IRFZ24N

I did not modify t5. Looking into other designs, they use broadband transformer on the input. Later will try it.

I am surprised at the low output on 80 M. Any reason?

With Anthony' move to isr reading the key/paddle hardware,we can move to almost real-time. Here is how: 1. His ISR sets a flag. 2. Our audio loop in tx_process or rx_process can check the flag very

Found another set of irfz24 and went in a similar way to your experiment, but using the actual finals and remove the driver section.? For this I removed c30, c32, c100 and c101. Then from the back of

In my past, with process control, these problems were solved by having Fast, Slow, and maybe medium speed loops based on a timer interrupt.? That ensures the fast loop is executed on a minimum cycle

One of the first things I checked too. Apparently I was sloppy and measured from the surface of the blocks. When there was no continuity, I assumed black plastic blocks. I just checked more carefully,

I have posted a development code update. Some of the items are a bit obscure: - created submit_field_size_and_position_adjust() and implement_field_size_and_position_adjust() for adjusting and moving

True,? cascade threading is sometimes for code efficiency or other uses but not always performance.? It can be a whole other process with interprocess communication and linux is fairly rich with

Allison, I, too, am scratching my head to ascertain the cause of the failure.? I am also considering using a beefier BS170 (2) in parallel as an option (I already have those in my parts supply).? I

Look at V4 and latter and the mods incorporated along the way to V6. Allison ------------------ Please use the forum, offline and private will go to bit bucket.

Wonder why they died? First bet is a impulse more than 20V subjected to the gates. If you look those devices are not subject to much current. Allison ------------------ Please use the forum, offline

Mine and other have reported the corner blocks are anodized aluminum. It was one of the first things I did.? If they had been plastic I'd have made up brass strips to connect across the corners.