Since it is 1 amp, I assume that it is only protecting the board, and not the PA.? When on 80 meters, my v4 and v5 boards will draw 2+ amps total.? That would be close to the trip point of the poly switch that you specified.
On my v5 rig, I have split the fuses, and have 2 1n4001 diodes in series from the 13.5 vdc supplying the rig and the separate feed to the board (red wire on the supplied connector).? The reverse protection is then on the fuse for the PA, since the two series diodes would protect the rest of the board from reverse power.? If i connect the power supply incorrectly, the 3 amp fuse in the PA lead will pop.? This arrangement also allows me to remove the PA fuse and power the rest of the transceiver for testing.? When doing this, the reverse protection is the diodes in series with the power supply to drop the voltage to just under 12 volts.
73
Evan
AC9TU
