microHAM STATION MASTER Manual page 57

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PA & Sequencer tab
The power amplifier in use is capable of automatic control using Icom CI-V data, has an output that provides
confirmation that it is ready for RF and operates with a T/R delay of 10ms unless the frequency has changed and
it must retune.
To support this amplifier, the KEYIN box has been checked, the PA port CI-V function has been set to generate
TX frequency at 9600 baud, simulating Icom radio with 6A CI-V address.
The INHibit signal is set for a 30ms delay to provide a small margin of safety and prevent the transceiver from
generating any RF during the SWITCHING DELAY of the antenna switch which uses relays specified for 26ms
switching times.
Output A10 controls preamplifier power for the receive 4SQ. It is set to 0ms LEAD time in order to disable the
preamplifier any delay. The TAIL delay has been set to a safe 20ms to guarantee that RF power has been
removed from the feedline before the preamplifier is turned on.
In order to use power sourced from A10 directly and to insure that the preamplifier will be OFF when not
operating on 160, 80 or 40m, the INVERTED box is checked for A10.
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