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Vaugh, it seems you have included the libaries for Adafruit Circuit Playground by mistake. These libraries should NOT be included in the sketch! In your sketch, look for following lines: #include

kevin -- I had the same problem with my 4.3 screen.? It is a bit of the wild west out there, so you just have to search, try and hope to find a TFT file that works for your screen. Sharpen your

Glad all good with your build. Any idea why mine will not compliie? Using the same sketch just keep getting the error message above. Thanks for any help you can offer Vaugh

47pf should be perfect but the inductor needs to be similar to L5/7 Raj

I have not tried this file from Ted in the following link, but it did work for someone else: /g/BITX20/message/67572 The issue is the .tft file is just a quick change to a compile

That worked for me using the old boot loader and yes the ten turn removed those annoying clicks. Now I find when getting close to the end of the tuning range the frequency gallops.. did I read that

Try with ide 1.8.5 Define mega328p old bootloder Regards Sarma vu3zmv

I have read all posts on this topic, but can't find the answer to my problem which is that raduino output does not fill the entire area of the nextion display. I have a 3.5 inch enhanced nextion. I

Thanks Raj. I'll pick up some 51pF caps Monday. My local parts shop gets worried if they haven't seen me in a day or two... I'll try parts I have on hand first.

John, see this earlier post of mine /g/BITX20/message/62097 Raj

Hi, been reading some of the topics here and yo are all very advanced for my build. I am only just starting so need some help please, I hope to add some of your mods later. I have a BITX40 and it has

The LPF as I have understood is aimed to remove some specific spurs. At 21.3mhz without the filter you should see a quite strong 23.7Mhz (21.3+23.7=45). If you don't even detect it, it means the LPF

Sorry missed the questions in the photograph. 1) Off and Ground are the same. To turn the circuit off you need to ground common. This removes the audio input to the circuit, and thusly turns off the

Hey Digger, Thanks for the feed back. So you are actually the second person to reach out to us about this. We realized this afternoon that the documentation was in error. I supplied david with the

Hey, I've installed the uBITX AGC board per the instructions and it just doesn't seem like its working correctly. I feel like I've gone round circles trying to make sense of it all. In part I wonder

I'd say C212 and L7 form one matching network, C214 and L5 form another matching network. As Curt noted, the 0.1uF caps at C211 and C215 are extremely large at 45mhz, pretty much 0 ohms AC

Thanks Curt. I probably meant C212 which is 22pf. Gets a little rough remembering component numbers when youre trying to recount. :)

Joe C215 is part of the matching circuitry used with the 45 MHz xtal filter -- 0.1 uF is a pretty large value at 45 MHz -- and it is large enough that it resonates with the coil way above this.? it

So it’s looks like I got to the bottom of the problem where RF seemed to be getting into the delay of the CW and causing chattering in my auto tuner plus a hiss in the speakers. It was due to the

The power mod is easier then figuring out spurs and harmonics. You certainly don’t need that expensive scope for it :) I just did mine and I guess I’m getting the 14w on 80 and 6w on 10 like