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After comparing the PDF to my HTML copy I realized the HTML version is better formatted and slightly more complete (not cut off on end of pages). You have to unzip to a directory and then open the local HTML page "HOME _ 858ssb.htm"
Thanks, I managed to save his website using the internet archive past snapshots but this PDF is more convenient. The legacy of unit 399 will live on forever and we will always remember him for his work on the 858 chassis.
Only seen a mod a few months ago a mod the HTX100 I think to convert CW to LSB. Didnt look that hard either. Remember reading years ago they were like a HR2510 but had a better filter on SSB as per AudioShocks pic. They were known for the LCD display slowly bleeding black with time from the...
Your the main reason I did stick with it, you gave me enough mentoring, motivation and insight to go for it. I can never thank you enough. Its RX does have some weird noise introduced < 500khz but everywhere else sounds fine.I have the IC on its way so I'll chuck it in. I still gotta work on...
Hey Brandon and anyone else watching this thread :)
Thought I'd give an update. I took a break a month ago after feeling a bit flat with it. But I decided to trace all PLL board cmos IC voltages to get a feel if it was financially viable as you were saying and I decided to keep working on it...
Agreed, 100%. Definitely was a step in the right direction.
I would not be surprised and I think that's a great theory because when I first got this radio it had a lot of surface rust and the bottom stand was removed and it looked like it had been bolted under a shelf (top cover had extra...
Turns out I did not hear it at all on supposed frequency and what I could hear was actual bleed though my laptop speakers nearby. Sorry for the bum steer.
Putting headphones on for the ts440s receive today, I found its doing similar to before, in that a 27.405 LSB transmission is actually...
Unfortunately I think I spoke too soon. Today I've been testing with second radio. The second radio was really hard to hear - very low in static/signal on the ts440 regardless of RF Gain position or if I had a screwdriver in antenna socket.
At the same time it was blowing the doors off my...
Well Brandon , I think its working!!! Looks like that may been the RX problem. I will verify tomorrow with a second radio and report back. I just installed the new PLL into IC1 (mn6147c from aliexpress) and the 3khz sweep thingy is gone on startup and it has proper volume and no weird noises...
Thanks, Just trying to scrounge up the resistors to try that with what I have on hand. Today I ordered the replacement chip (mn6147c) so in a weeks time I'll put that in.
Reading open with no resistance to ground no matter what ohms range I try.
I'm always willing to give it a try!
Are you saying tap a voltage source from the radio and bias to supply 2v with a resistor and then supply that to pin 16?
Getting excited - I feel like there may be a chance of...
Thanks Brandon, I am just slow with it. Re: VCO 4 (radio on 27mhz rx) If I probe D3 it changes audio and drops the TP1 voltage down a bit (7.8v to 7.6v) . TP slowly rises on startup to nearly 7.8v after 5 minutes and sits there pegged out.
I just decided to check all voltages as shown in...
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