Keith,
I would ground the spare ports.
I have a remote switch in a box at the base of my tower.
I have one spare port and I installed a dummy load on the spare port.
It really comes in handy for testing. It also helps me verify the
buried cable to the tower is still good.
During bad WX, I select the dummy load port in addition to
disconnecting the cable in the Shack.
73's Jim
W5IFP
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com]On Behalf Of ac9s@mchsi.com
> Sent: Wednesday, September 08, 2010 9:18 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Antenna Swittch - Grounded or Open Unused Contacts
>
>
> I am about to replace my 30 year old Ameritron antenna switch
> with a DX Engineering unit. It will be placed at the top of the
> tower to select between the various antennas - wire slopers for
> 160 and 80, inverted vees for 75 and 40, and the Steppir (
> currently under repair) for the rest of HF. I will not have
> multiple antennas selected at the same time. What is best - to
> wire the switch so that unused ports are normally grounded or
> open? My inclination would be to ground all the unused antennas,
> but since the switch is shipped normally open I have an element of doubt.
>
> Thanks --
>
> Keith
> AC9S
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