An Old Friend Heard on the New Receiver EI0CL

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I got up at around 5 am (EDT) on 31 Oct 2024 and turned on the receive portion of my Mythbuster II rig. I immediately recognized the voice. I have been talking to Michael EI0CL for 24 years! • Even though conditions were bad and my Hex beam was pointed West, Mike was coming in quite well. • Above is a short clip of me hearing an old friend on the new receiver. TRGHS. Thanks Mike. 73. • The previous video on this rig is here: • Bill N2CQR Builds Another Mythbuster ... • A couple of guys on Facebook asked for a schematic for this rig. I don't really have one -- as you will see it is a collection of different circuits from lots of different sources. I was also thinking that if you need a schematic for a rig like this, you probably shouldn't try to build a rig like this. But in an effort to be nice, I supply here some background info on some of the circuitry and parts sources. And no, I don't have BOMs nor Gerber files. • More info on the Yaesu VFO is here: • https://soldersmoke.blogspot.com/2021... • The VFO is kind of high in frequency. But it is very stable. I can't really take credit for this -- the credit goes to Yaesu. But I like the circuit because it is all analog and all discrete component. It even has a split stator temperature compensation variable cap! At Pete's recommendation, I originally bought these boxes thinking that I'd just get the anti-backlash gears and the reduction drives. But the sellers always sent the entire VFO boxes. They even come with a clarifier circuit which I now use as an up 5-10 feature that lets me work the DX-peditions on 20. • As for the tape, I got mine from Amazon. It has conductive adhesive: • https://www.amazon.com/gp/product/B07... • The boards for the IF Termination Insensitive Amplifiers come from Todd K7 TFC at Mostly DIY RF: https://mostlydiyrf.com/tia/ • The little LM386 boards that I have been using are available here: https://www.amazon.com/dp/B00LNACGTY?... I recede it with one stage of AF amplification from the original BITX 20 sechematic. I put a 10K oit between this stage and the LM386 board. • Here is the Amazon source for the 1/8 inch plywood that I will use for the case (I have used up all the pandemic treadmill packing material): • https://www.amazon.com/dp/B0D5VCBBP4?...

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