[1000mp] 1000MP and SB220

[Pete Smith]

At 12:37 PM 11/15/02 -0800, WA6TLA wrote:
>Not sure if the SB220 is like the SB200, but the stock SB200 use a 120 vdc
>relay that is keyed by -120 volts.  You don't want to hook this up directly
>to the 1000MP solid state keying output without a level shifter having
>sufficient current capability and spike protection.

Elliot's right, which is the point of the high voltage transistor 
switch.  I use a MOSFET and steal the switching voltage from one of the 
connectors on the back of the radio.


73, Pete N4ZR
Sometimes a tower is just a tower