On Sun, 12 Oct 2008 18:16:25 -0700, John Smith
wrote:

Richard Clark wrote:
There are four ways to hook these up.

How typical ... yawn

Go back to sleep, Brett. You certainly added nothing.

Switch one center posts: Rig - now called the rig switch
Switch two center posts: Antenna - now called the antenna switch

Rig switch position 1: both sides to ground
Rig switch position 2: both sides to antenna switch position 1
Antenna switch position 1: both sides to rig switch position2
Antenna switch position 2: both sides to ground

Rig can be
1. open
2. grounded
3. to switched antenna

Antenna can be
1. open
2. grounded
3. to switched rig

Both rig and antenna can be independantly open or grounded, or
interconnected. No real advantage in the open positions, but they are
available as a 6 state solution. As such, a 4 state solution that was
sought.

More switches, more states. Classic cross-point switching.

73's
Richard Clark, KB7QHC