JC-4s manual version 9.1 page 6
When we have tuned both antennas to the same frequency, after having started the coupler for
memory operation, we can change antennas and use them immediately (without retuning every
time we change them)! So we have the capability to compare the antennas immediately without
having to tune each one of them while the propagation is changing!
Inside the tuner there are some more jumpers on the top board.
The 3 pin jumper is for selecting to use the memory function or not. Default the jumper is selected to Yes.
