03-04-2010, 06:41 AM
I'll take a little stab at it. Looking at the 37-610 schematic it looks like jumpering 3 and 4 allows connection of a balanced antenna (dipole/doublet) at 1 and 2. Flipping the jumper over to 2-3 should allow a random-length single wire to be connected at 1.
Impedance wise you can guess the balanced connection to be in the 50-100 range and the single wire connection to be >600 ohms up to a few k-ohms.
Impedance wise you can guess the balanced connection to be in the 50-100 range and the single wire connection to be >600 ohms up to a few k-ohms.
