There's a whole bunch of ways to do the same thing.? This would work just fine and be cheap.? But you'd also see a voltage drop across 2 diodes, so upwards of 1.4v drop.? Lets say the radio draws 7A through the diodes, that's a power loss 9.8W.? When you're
running on a battery, that's a pretty large power loss and a fair amount of heat to have to reject.? Of course that's only at full-duty and on SSB it wouldn't be a big deal, but if you're running digital modes, that would be a lot.
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I am surprised no one so far has used the simplest way of protection.
Use a suitably rated (amps) bridge rectifier, hard wire + to rig +
hard wire -ve to rig -ve? the two AC tags of the rectifier then connect
to the power supply.......either way round makes no difference, the rig
will always see the correct polarity.? Fuse as you normally would.
My 2 cents worth from this side of the pond.
Dave G4JBE
