[TowerTalk] homebrew low voltage surge suppressors?

[Keith Dutson]

That's overkill IMHO.

Keith 

-----Original Message-----
From: Dick Green WC1M [mailto:wc1m at msn.com] 
Sent: Wednesday, September 27, 2006 10:03 AM
To: 'Keith Dutson'; 'Tower'
Subject: RE: [TowerTalk] homebrew low voltage surge suppressors?

No, I'll need 24 of them -- one at each end, tower and shack. 

> -----Original Message-----
> From: Keith Dutson [mailto:kdutson at sbcglobal.net]
> Sent: Wednesday, September 27, 2006 10:54 AM
> To: 'Tower'
> Subject: Re: [TowerTalk] homebrew low voltage surge suppressors?
> 
> WOW, they certainly have gone up in price! The RCT is now $99 at AES.  
> But you will need 12 of the 8 wire RCTs, so that is $1200.  Let us 
> know if you find a cheaper alternative. Thanks.
> 
> 73, Keith NM5G
> 
> -----Original Message-----
> From: towertalk-bounces at contesting.com 
> [mailto:towertalk-bounces at contesting.com] On Behalf Of Dick Green WC1M
> Sent: Wednesday, September 27, 2006 9:36 AM
> To: Tower
> Subject: [TowerTalk] homebrew low voltage surge suppressors?
> 
> My new tower will have three 4-el SteppIRs, three TIC rings, a T2X, a 
> stack match and an SO2R switch box. That comes to 96 control wires. 
> Since the tower is over 200 feet from the shack, it's best to have a 
> surge suppressor at both ends of each wire. I used Polyphaser RCT 
> surge suppressors for my other tower, but the price has about doubled 
> since I did that. I'm looking at close to $3,000 worth of RCT surge 
> suppressors. Besides, the RCT mounting hardware is really designed to 
> clamp to a tower leg and I'll be mounting the suppressors on ground 
> panels inside metal NEMA boxes. I've done that before and wasn't real 
> happy with the result. Even if I go with the ICE units, which have 
> better mounting, the cost will be quite high.
>  
> So, I'm wondering if anyone has seen or designed a homebrew low 
> voltage surge suppressor circuit? My understanding is that it takes 
> more than just low voltage MOVs. You need series inductance and/or 
> resistance and a diode.
> I haven't found anything appropriate on the web. Can someone point me 
> to a schematic and/or tell me how they did it?
>  
> 73, Dick WC1M
>  
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