[Milsurplus] [Boatanchors] CU-872A/U antenna coupler FS near Boston

[W2HX]

Probably the gain in the unit compensated for any losses due to impedance mismatch

Sent from Nine<http://www.9folders.com/>
________________________________
From: Nick England <navy.radio at gmail.com>
Sent: Wednesday, February 20, 2019 5:00 PM
To: W2HX
Cc: MilSurplus QSLNet; r-390 at mailman.qth.net; John Flood
Subject: Re: [Milsurplus] [Boatanchors] CU-872A/U antenna coupler FS near Boston

The parts list says it has UG-58A/U connectors. Everything I can find says that is a 50 ohm connector.
I think all the military type N listings are 50 ohm.
Nick England K4NYW
www.navy-radio.com<http://www.navy-radio.com>


On Wed, Feb 20, 2019 at 2:56 PM W2HX <w2hx at w2hx.com<mailto:w2hx at w2hx.com>> wrote:
John et al.,

This is an interesting multicoupler. One interesting thing I've wondered about...It has a 70 ohm antenna matching input impedance. And i always wondered if the antenna connector was a 75 ohm N connector or the standard 50 ohm. (The difference is that the male center pin is thicker on the 50 ohm version, and will damage a 75 ohm female part)
Just something to look out for.

Wikipedia has a nice photo of both impedances and genders.

73 Eugene W2HX

________________________________________
From: boatanchors-bounces at mailman.qth.net<mailto:boatanchors-bounces at mailman.qth.net> <boatanchors-bounces at mailman.qth.net<mailto:boatanchors-bounces at mailman.qth.net>> on behalf of John Flood via Boatanchors <boatanchors at mailman.qth.net<mailto:boatanchors at mailman.qth.net>>
Sent: Wednesday, February 20, 2019 1:24 PM
To: MilSurplus QSLNet; r-390 at mailman.qth.net<mailto:r-390 at mailman.qth.net>; BOATANCHORS2 LIST
Subject: [Boatanchors] CU-872A/U antenna coupler FS near Boston

Greetings,
This is working, some "test" readings are a bit on the low side so perhaps some of the 6922 tubes are getting tired.  There is some glue residue below the normal data tag most likely from some other data tag that was mounted there.  Looking for a local sale in the Metrowest or North Shore Boston (This of course means that the first reply will come from Alaska!).  I'm not really interested in shipping this or dealing with Paypal any more in MA.  Any interest?  I could bring it to the Lewiston ME, Nashua, NH, or Framingham, MA fleas.  Nearfest as well but I hope it finds a home sooner than May!
John Flood N1JAF978-979-2807
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