Re: FT-847 IN TX ALL TIMES
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Quite agree this would be an improvement.? I used a 4N25 optocoupler on my FT-100 interface (that has a slightly different configuration) and still use it today with the FT817
Built several of these over?the years for myself and friends each one more nearer than the previous one.?
It works both for SSB and FM and doesn't affect the CAT interface if you are not using the matching FC-20 auto atu.?
On Thu, 6 Jun 2024, 15:53 Spence G5STO via , <unavailable.equal= [email protected]> wrote: Hi Ian, that’s a beautiful circuit and could only be improved by replacing the 2N2222 with a 4N33.
De Spence G5STO
Sent while portable! please excuse typos. ? This is what have been using for the last 25 years with the FT-847 with various data modes in both SSB & FM including FT-8
Credit goes to ( I think) Jim Barber N7CXI who co-wrote W95SSTV which it was initially designed for.
Hope it helps
I've used my FT-847 on both 6 and 2M, no problem.? Just used the sample interface circuit in the manual.??
73,
Tom K6EU
MAN, you guys are good !!!!..? Very obvious thing overlooked. HI.? All good now.? I had schematics out last night trying to figure out what components could be bad.? You made my day.? Any of you using something for FT8?? I had it receiving FT8 through the DATA IN/OUT plug but was trying to get transmit working.? I notice there was a claim that the DATA IN/OUT only worked on HF and I wanted it for 6 M. Probably have to go into mic jack for that and PTT.? Any units on the market that do that?? Have not looked.? 73 Mike K4PI
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Ian M
