Richard Clark wrote:


Hi Gary,

I see your problem right here.

There are four ways to hook these up.

73's
Richard Clark, KB7QHC

Hmmm, I guess you post implies you are a bit short on beginning with the
first way?

How typical ... yawn

Regards,
JS

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

Richard Clark wrote:

...
Go back to sleep, Brett. You certainly added nothing.
...
73's
Richard Clark, KB7QHC

I'll wakeup, when something interesting comes about ...

Regards,
JS

Richard Clark wrote:
Rig can be
1. open
2. grounded
3. to switched antenna

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

As a refinement I'd put a dummy load on switch #1 so that the choices would be:
Rig can be:
1. Open
2. To dummy load
3. To switched antenna

The antenna switch would remain the same -- open, grounded or to switched rig.

I'd rather run my rig into a somewhat reasonable load rather than a short to
ground during the inevitable instance of forgetting to set the switch properly.

If running less than say 200 watts output then one could even use an
incandescent light bulb for the dummy load. It would presumably light up if
one were to inadvertently transmit in that configuration. So, the rig would
be at least partially protected and the operator would have some indication of
why no one is answering his CQ. Maybe a *red* light bulb?

One could also physically (not electrically) parallel the switches so there
were only two configurations. The rig connected to the antenna =OR= the rig
connected to the dummy and the antenna connected to ground. That would be cool.

73,
--
HZ

On Mon, 13 Oct 2008 15:15:44 -0600, Hank Zoeller
wrote:

Richard Clark wrote:
Rig can be
1. open
2. grounded
3. to switched antenna

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

As a refinement I'd put a dummy load on switch #1 so that the choices would be:
Rig can be:
1. Open
2. To dummy load
3. To switched antenna

The antenna switch would remain the same -- open, grounded or to switched rig.

I'd rather run my rig into a somewhat reasonable load rather than a short to
ground during the inevitable instance of forgetting to set the switch properly.

If running less than say 200 watts output then one could even use an
incandescent light bulb for the dummy load. It would presumably light up if
one were to inadvertently transmit in that configuration. So, the rig would
be at least partially protected and the operator would have some indication of
why no one is answering his CQ. Maybe a *red* light bulb?

One could also physically (not electrically) parallel the switches so there
were only two configurations. The rig connected to the antenna =OR= the rig
connected to the dummy and the antenna connected to ground. That would be cool.

Hi Hank,

Sounds like good advances toward full use of the two switches.

73's
Richard Clark, KB7QHC