On May 15, 6:19*pm, Telamon
wrote:
In article ubQWj.2239$Yp.2147@edtnps92, m II wrote:
Telamon wrote:

Instead of just disconnecting the radio and ground you might also want
to connect the coax center conductor and shield together at that switch
point.

After giving this some thought, I got to wondering...

The induced voltage in the antenna has an instantaneous vector value.
Same on the outer sheathing of the coax. When the signal in the sheath
is redirected to the inner conductor, it will, in effect, be changing
direction.

That changed direction will be in opposition to the signal in the main
antenna wire.

Maybe. At some frequencies it will sum in opposition but not at all
frequencies.

I'm thinking that the length of the coax will in effect be subtracted
from the antenna length, not added as I had previously thought.

The antenna, apparently, is only as long as the wire portion MINUS the
coax length.

This is all assuming that the switch is indoors, at the very end of the
coax, not where the antenna joins the inner conductor.

- I suggested that you short the outer and inner coax conductor
- so the wire and coax would function common mode.
-
- Essentially the coax would just make the wire part look longer.
-
- --
- Telamon
- Ventura, California

House -o======------------------------------======x

x======-------------------------------======o- Shop

-o PL-259 Plug
= Coax Cable
- Antenna Wire
x Shorted End

OK that works ~ RHF

-but- It brings the 'common-mode' noise from the
House to the Shop and the Shop to the House.