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#1
02-10-2012, 08:15 PM
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Early 80s technology at it's finest. The chips are date-marked late 1983 / early1984 There's an 8035 microcontroller at it's heart. I assume the RF is done with a programmable PLL.
  
Last edited by bandersen; 02-11-2012 at 12:36 AM. 
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#2
02-11-2012, 12:10 PM
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Wow! That was obviously an expensive piece back in the early 80's. I bet with a little program hack and a new eprom burnt, one could have that thing singing down in the 20Mc band. But don't ask me how. I always though some of their 60-70's gear was made sort of on the cheap, but this thing looks first class, fiberglass pcb's and all.
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#3
02-12-2012, 04:41 PM
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Quote:
It might be easier than that. Assuming this uses a PLL, there should be a hi-speed digital divider in the feedback loop. Something like ÷ 256. Perhaps that could be tweaked to ÷128, so it would put out a frequency 1/2 of what the display shows. 22 MHz instead of 44 MHz for example. Then add a range switch so it could do 17.5 - 25 Mhz or 35 - 50MHz. 
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#4
02-12-2012, 06:41 PM
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You're probably onto something there. The schematic should reveal if it's divide by 256.
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#5
03-02-2012, 07:54 PM
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Quote:
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