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6M for ubitx is a no.?? The amp has no capability there due to drivers and predrivers.? 2n3904 is dead there. Also the only filtering for TX path is the 33mhz low pass fitler. The point was IRF510

No. In fact? you need to check the spectral purity of yours if you plan to operate above 17 MHZ. You may need extra filtering? -Dan, W2DLC

Is this rig even marketed to operate on the higher bands such as 6 Meters?

TImothy (TEF), Step back take a deep breath.? Unless you have worked? with the uBitx most of what you are saying is barking at the moon. Saying parts hard to get I'm sure some are somewhere..? For

Dennis Yancy, RD16HHF1 is the 10$ solution that fixes little.? If you managed to blow the IRF510s then RD16s will be just as easy only more expensive. FYI the "better" is more myth than reality.?

Tim ab)wr, For Q90 the 5179 will work for about 14V in the circuit due to the biasing. ?For the predriver its a poor choice due to lack of power handling. Allison

Tom: I started with C in the late 1970's and it's remained my favorite language ever since. You can actually do a lot of "mental optimization" with beginning students if you explain the differences to

Kees Talen builds and sells an amp using Mitsi mosfets? that goes 80 to 6 m.? He uses RD16HHF1 . not the VHF version . he is very conservative in design. http://www.qsl.net/k5bcq/Kits/Kits.html

Would there be a clear advantage to replace them?

Yes, I did the same, look at the potentiometer connections that might be reversed. I ended up frying the TDA.

m, Check your wiring, probably in the audio connections. Check the stock volume control for proper value etc. r

I'm at last got my uBitx wired up: slightly older (2017 date) board, in out-of-the-box condition with no mods or software updates. Based solely on reading, I believe I might have the TDA2822 problem,

Yes that is true, if I didn't originally learn C on non-optimizing compilers for simple machines and check the "real" code, assembly, to see if C was dong what was expected, I think my understanding

very nice Darren, thank you very much. Kevin REa K6REA

Hi Tom: I did look at the assembler output for a similar thing over a year ago and the compiler did make the optimization anyway. I'd be surprised if the GCC didn't make the change you're talking

I've cleaned up a few things on various screens.? The same download links above should now download the updated versions. Darren

For 15.5 nSeconds read 16.5 nSeconds in the input capacitance calc of last post. TF.? Obvious kludge? Simple untuned emitter follower stages in class A will also give the effect of a coupling

C'mon Jerry I think you are being a bit harsh.? I stated explicitly that the NN1G design was class C but it introduced? class of chips that people have been dismissive of.??

There are other displays available: https://www.buydisplay.com/default/5-inch-tft-lcd-module-800x480-display-controller-i2c-serial-spi 2.8 inch ILI9341 based touch screen display which is widely

So to elaborate on my previous really short reply. I really like the macro, it handles the hardcoding the number of elements issue well. For the definition inside the loop. I may be trusting the