[Elecraft] KPA500 + TS-870SAT + MICROHAM

[Joe Subich, W4TV]

The KPA-500 is just fine with the "SS" (transistor switching) output
of microKEYER II and Digikeyer II.

73,

    ... Joe, W4TV


On 2/28/2012 3:15 PM, Francisco "Siso" Hennessey-HK3W- wrote:
> 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
>
>
>
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