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[Amps] "N" Connector

Subject: [Amps] "N" Connector
From: John Lyles <>
Date: Sat, 28 Dec 2013 20:12:11 -0700
List-post: <">>
When I came into my current job, there were some cavity amplifiers using RCA 7651 tetrodes, running 5 kW pulsed power, about 600 watts average. This was at 200 MHz. The N connectors on the input to the next stage (an RCA 4616 tetrode) would burn up every so often. Since the RCA cavity amp input was tuned, VSWR could wander up when fingers twirled knobs too quickly. We replaced the N with 7/16 DIN and never had another failure. It was clearly too much for N connectors, the VSWR and the freq x power.
73 and happy new year,

Message: 1
Date: Thu, 26 Dec 2013 12:40:45 -0500
From: "Mark Bitterlich" <>
To: "N1BUG" <>,   "Amps reflector" <>
Subject: Re: [Amps] "N" Connector
Message-ID: <B8CB101417974FA2B7987EC7449B4E35@PC144745932200>
Content-Type: text/plain; format=flowed; charset="iso-8859-1";

I've put 10 KW PEP (SSB) through a standard Milspec N connector attached to
RG-393.  Also with L44W 1/2" Heliax connectors (solder on center pin as
well) .  However, this was with a perfect match.

And for Peter .... this was not on the ham bands, so you can rest easy.


----- Original Message -----
From: "Carl" <>
To: "N1BUG" <>; "Amps reflector" <>
Sent: Thursday, December 19, 2013 9:43 AM
Subject: Re: [Amps] "N" Connector

I run 1500W on 144, 222 and 400W on 432 thru N connectors.
The 1000W AM CARRIER (4000W PEP) 432 military cavity Ive been working on
has an N.

All Mil Spec US made of course.


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