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Re: [TowerTalk] Recommended Coaxial Surge Protector for HF

To: Alan NV8A <>
Subject: Re: [TowerTalk] Recommended Coaxial Surge Protector for HF
From: Charles Coldwell <>
Date: Sat, 1 Jan 2011 06:29:57 -0500
List-post: <">>
On Dec 31, 2010, at 6:20 PM, Alan NV8A wrote:

> On 12/31/10 05:51 pm, I wrote:
>> I forget what other components were in the one coax protector I opened
>> up, but there was no gas-discharge tube; there was an MOV, but I don't
>> recall whether it was labeled to indicate its specs.
> Now that I have looked again at ICE's document comparing their devices 
> with PolyPhaser's, and at the description of the Polyphaser devices on 
> the DX Engineering Web site, I see that both say that Polyphaser uses 
> gas-discharge devices -- so either I misremembered what I had seen or I 
> did not identify the component properly.

MOVs typically have too high capacitance to be used at RF (it low-passes the 

Charles M. Coldwell, W1CMC
"Turn on, log in, tune out"
Belmont, Massachusetts, New England (FN42jj)

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