[TowerTalk] lighting protection setup

[Mark Robinson]

I was thinking that those coaxial t/r relays might work well. Right now I 
disconnect the antennas by hand but there is always the day when I forget. 
Also it is a lot of wear on the PL259 connectors over the years.


Mark N1UK


----- Original Message ----- 
From: "Gene Smar" <ersmar at verizon.net>
To: "Mark Robinson" <markrob at mindspring.com>; "David Gilbert" 
<xdavid at cis-broadband.com>; "Rick Stealey" <rstealey at hotmail.com>
Cc: <towertalk at contesting.com>
Sent: Friday, 27 June, 2008 7:24 PM
Subject: Re: [TowerTalk] lighting protection setup


> Mark:
>
>     At my station I have essentially this scheme.  I have one run of coax 
> out to the tower.  At the tower base I have an antenna switch that I 
> remotely control from within the shack.  The five HF antennas atop the 
> tower and around the back yard are connected into this switch.  None of 
> these antennas is connected when the switch is powered down.
>
>     My only advice would be to make sure that whatever relay you select 
> for this purpose that it is capable of operating at the power levels you 
> expect.  I would urge you not to use ordinary open relays for V/UHF work 
> but purchase one(s) that are intended for those higher freqs.
>
>
> 73 de
> Gene Smar  AD3F
>
>
> From: Mark Robinson <markrob at mindspring.com>
> Date: 2008/06/27 Fri PM 05:10:45 EDT
> To: David Gilbert <xdavid at cis-broadband.com>,
> Rick Stealey <rstealey at hotmail.com>
> Cc: towertalk at contesting.com
> Subject: Re: [TowerTalk] lighting protection setup
>
> Is it worth placing coaxial relays outside the shack and having the relays
> set up  so that when these relays are not energised the antennas are
> disconnected from the shack and grounded. Powering up the relays would
> connect the antennas into the shack and remove the grounding. This would
> allow for an easy automatic disconnect and grounding of antennas when not
> operating.
>
>
> Mark N1UK
>
>
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