1 thing got my eye when i was looking at the inside of an MFJ 939 Tuner because you just need to look inside.
There is a missing relay and what looks like provisions to switch between 2 antenna ports.
the software in the tuner still switches that missing relay when you switch it from Memory bank 1 and 2. where W1 and W2 are on the circuit board.
It's kind of funny because the suppression caps and flyback diodes are installed
all that is needed is to add the relay, run 2 wires, add the antenna port and more the ground lug over.
by switching the mem banks all so switches the antenna ports now.
get all the solder out of the holes
add the power jumper wires to the repay matching up W1 and W2
Adding the relay
add the SO-239 port
There is a missing relay and what looks like provisions to switch between 2 antenna ports.
the software in the tuner still switches that missing relay when you switch it from Memory bank 1 and 2. where W1 and W2 are on the circuit board.
It's kind of funny because the suppression caps and flyback diodes are installed
all that is needed is to add the relay, run 2 wires, add the antenna port and more the ground lug over.
by switching the mem banks all so switches the antenna ports now.
get all the solder out of the holes
add the power jumper wires to the repay matching up W1 and W2
Adding the relay
add the SO-239 port
