Re: [Elecraft] K2 External Keying

Dear Dave, You need to use the transistor circuit too. It does 2 things, first it makes the RS232 levels, which are often +12V and -12V, compatible with the K2 (applying -12V to the keying input is probably not a good idea), and second it inverts the keying. I think the inversion is what is

Re: [Elecraft] K2 External Keying

I think Dave needs to select Hand in the inp menu, and not pdl John k7up At 01:18 PM 17/12/07, you wrote: Dear Dave, You need to use the transistor circuit too. It does 2 things, first it makes the RS232 levels, which are often +12V and -12V, compatible with the K2 (applying -12V to the

[Elecraft] K2 External Keying

I have configured my computer and paddle according to Figure 8-1 on page 92 of my K2 owner's manual. According to the N3FJP software I connected the keyline to pin 7 of the d-sub and ground to pin 5. I selected INP PDLn and A DET On in the K2 menu. When I turn on the K2 I hear a low frequency