[1000mp] ft1000mp mkV amp switching

Tom and Linda Hellem [email protected]
Fri, 30 Aug 2002 18:00:19 -0700


Pete:
I would very much appreciate if you could send me that circuit. I have an
sb-220 also, and it has eaten 2 relays on me already.
I have a fax if you could do it that way 715-789-2903.
If not , no problem. I will try to find K9MA see if  can get it from him.

Thanks for posting this info.

73
Tom K0SN

>
> My modified SB-220 uses a QSK circuit developed by K9MA, which uses +12V
> delivered to the gate of an FET to initiate the switching sequence.  When
I
> got my Mark 5, he kindly provided me a circuit that would supply that
> voltage on relay closure, using another FET and 12 volts stolen from the
> transceiver.
>
> 73, Pete N4ZR
> Sometimes a tower is just a tower
>
>
>
>
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