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I'm glad you got the CW interface working. Thanks for the good information!
Serving the Amateur Radio Community with general logging and contesting software since 1997.
In a message dated 6/21/03 10:56:13 PM Eastern Daylight Time, k4drq@... writes:
It was the PC.
I loaded the program on an old PII 233mhz, W95 system, and it came up
For those of you who encounter a problem like mine, and who might
benefit from some voltage/current data, here is what I measured for
my future reference:
My TS-850 measures +7.4vdc with the key open.
when keyed, the circuit draws 1.5ma from the ts-850.
My cw interface requires 4.5vdc to drive the
2n2222 into enough condution to key the ts-850;
at that point, the interface circuit draws
0.8ma from the keying source. I performed these
tests using a variable DC supply for keying
the cw interface.
I put a scope on the interface input from the PC, and observed
-10vdc unkeyed and +10vdc when keyed by the program on the