Specifications

Multikeyer interface by Bob KI2L

Example 2 : Controlling the state of your linear amplifier

A specific PIN of the LPT port may be assigned to control the state (Standby/Operate) of

your linear amplifier. Of course a very basic interface (transistor, reed relay) has to be built

between the remote ports of your transceiver, your linear and the LPT port since

TRX-Manager does not control your amplifier directly!

The purpose of this sample is to control the state of your amplifier while you are running

TRX2.



SO4R must be checked (Setup/TRX1) and a parallel band decoder available and properly

configured



Band Decoder must be checked (Preferences/Transceiver while running TRX2 as Main

transceiver).



Example: you choose PIN 7 for this function (you may choose any PIN between 2 - 9).



PIN 7 has to be wired to control the linear relay line between your transceiver and your

amplifier



Settings for the Band Decoder (under Setup/BAND DCD):

b flag is assigned to TRX2 by TRX-Manager (PIN 7 uses position #6)

160m = 1000a0cd => PIN 7 at low level => Standby

20m = 1010abcd => PIN 7 at high level => Operate for TRX2