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Opps...I misunderstood the problem. Jack, W8TEE

I believe Dave has identified your problem area, if you wired up your mic jack per the wire up instructions your Kenwood/ Beofang mic won’t work. That mic has the audio/bias on the ring and ground

I did Howard's mod by adding the calculated 27uH inductor in series with R86 and parallel caps of 220pF on R87 and R88. My power output change results: 7MHz from 12.5w to 14.5w 14MHz from 7w to

If D0 and D1 come out to a jack for the keyer paddle, can use the same jack for firmware downloads.?

Could be that the Raduino's processor just gives access to the RX/TX UART pins, no USB chip on board at all. Then use your choice of FTDI/Prolific/SiLabs in a cable adapter such as this:?? ?

Ian, I'm marveling at your code! Fantastic. I had seen your note about 5 hex files being available and I couldn't find them. I was having problems with the source and couldn't upload them. Hence the

Thanks so much Jack. I've often needed that info for other projects! I printed it out fo keep. However, I was referring to Ian's precompiled hex files I couldn't find, because I was having trouble

Like I said, most of the cooked IRF510 reports seem to be from twiddling bias pots, not high SWR.? Can you point to a few posts that report otherwise? When operating at 12v? Of course there aren't

This is a board from eBay that I find very useful when trying out various projects using the Nano. Nano plugs in and there is access to every port pin and adjacent to each a 0V and 5V connection

This in a nutshell. While macOS may have issues with CH340 chips, Windows users tend to have issues with both FTDI and Prolific chips (in both cases, the market was flooded with cheap, cheerful and

By the way you have not stated witch BITX board you are testing. If it is a SMD version from Ashar Farahan then you should do the carrier shifting mod suggested by VK3YE Peter Parker by witch you will

Tim Just disconnecting the microphone sometimes does not reduce incidental noise in the audio spectrum enough for a good measurement of carrier balance. This is especially true if using a microphone

“Exactly where did you find this data?” Right here on the forum. Multiple reports of IRF510 failures. Not a single RD16HHF1 failure reported yet (now that doesn’t mean it can’t happen). My

Satish, No mic. Just the two-tone generator. When I get the rig put back together I'll try isolating the mic pre-amp to see if it is generating some kind of noise. It doesn't look like noise on the

Virtually any RasPi will do that, and most will run software equivalent or better than 'doze stuff for operation.

Heathkit used to do this with some of its kits oh so many years ago. Then the concept seemed to disappear into the ether. Congrats to you for newly discovering the concept again. It is a concept

I used the FTDI cable to do it or for the macbook or I run win-XP in a VM (VMware product). The nice part of using a VM contained machine is it isolates everything from the macOS while still running

What voltage are you seeing at the base of Q6 when in transmit? tim ab00wr Kd4epg@... wrote:

Remove your microphone and then check for any carrier leakage at the input of the crystal filter and after the crystal filter. I do this with a RTL dongle. May be your electrat mic may be faulty, Just

Arv, I get the same carrier level in the spectrum analyzer with a tone or without a tone, just the two-tone generator output impedance as a termination. When you say to terminate the mike input what