http://elecraft.85.s1.nabble.com/KPA500-TS-870SAT-MICROHAM-tp7326855p7326950.html
... Joe, W4TV
> Hello I just bought an ampifier KPA500. I have 3 Kenwood radios model
> TS-870SAT, TS-480SAT and TS-570, I want to confirm with your technical
> support if both Microham Digikeyer 2 and Micro Keyer 2 are just needed to
> key my amplifier as stated on the operations manual.
>
>
>
> Here's the explanation taken from the User's Manual of Microham products:
>
>
>
> (7) PA PTT: PTT output for Power Amplifier
>
> Ground during transmit, TIP - Signal, SHELL - Ground
>
> If the jumper is in the SS position, the switching transistor (open
> collector) is connected to the PA PTT jack. The transistor can switch up to
> 45V/0.8A. This position is appropriate for modern Power Amplifiers with
> electronic keying. Check the manual of your amplifier to be sure the power
> requirements do not exceed the transistor rating. If the requirements exceed
> transistor rating set the jumper to the RE position - this position connects
> the relay contact to the output jack. Maximum rating for the relay is: 48V
> AC/DC @ 1A.
>
>
>
> Any help will be appreciated
>
> Regards
>
> Siso, HK3W
>
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home:
http://mailman.qth.net/mailman/listinfo/elecraft> Help:
http://mailman.qth.net/mmfaq.htm> Post: mailto:
[hidden email]
>
> This list hosted by:
http://www.qsl.net> Please help support this email list:
http://www.qsl.net/donate.html>