[Ham-Mac] TS-570 / iMic mismatch.

[Lon Kinley]

Dick,

I'm running two machines - a G3 iBook running 10.3.9 and a G4 tower 
running 10.4.1. No, I'm not using the SL-1+. As we discussed earlier 
I am using the Donner interface for I/O and the MicroHAM for computer 
control.

>BTW, the number I recall quoting is from the the Kenwood TS-570 users manual
>where is says the output to Pin 3 (ANO) is 4.7k ohms.  I have no idea what
>the iMic wants to see and never could get direct answer from Griffin
Technology.

Actually, anything over 600 ohms should work fine.  I have run the 
570 I/O direct (no isolation or interface) to the iMic with the same 
results. I use the Donner just for ground loop isolation.

>This impedance mismatch discussion is off the topic.  I posted the note to
>share the SL-1+ modification by KG6WTF to add a USB interface.

I changed the subject line. :)

73,

Lon - N3ZKP
Baltimore, Maryland