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[Amps] National R-175 Choke

To: <amps@contesting.com>
Subject: [Amps] National R-175 Choke
From: garyschafer at attbi.com (Gary Schafer)
Date: Fri Mar 28 20:53:47 2003

RFlabnotes@aol.com wrote:
> Recently someone posted a request for help on analyzing this famous plate 
> choke for possible resonances, but I can't find the original post (I don't 
> keep old mail for long). This morning, I found one of these things hiding in 
> a box of parts that had slipped below the radar. I pulled it out and did a 
> quick sweep with the Vector Z meter, so if whoever that was will contact me, 
> I can email you all of the resonance data.
> 
> They made both an R-175 and an R-175A - I don't know which we have, but it is 
> pristine so whatever you have, you can compare it with my physical 
> measurments to verify.
> 
> 73
> Eric K8LV

Hi Eric,

I am the one with the R175A in the 813 amp with a burned section.

73
Gary  K4FMX


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