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Today's Topics:
1. Re: Millen HV Connector Strain Relief (Mike Feher)
----------------------------------------------------------------------
Message: 1
Date: Sat, 16 Nov 2024 21:21:53 -0500
From: "Mike Feher" <
[email protected]>
To: "'Mark K3MSB'" <
[email protected]>, "'Military Radio Collectors
Association'" <
[email protected]>, "'List Milsurplus'"
<
[email protected]>, "'ARC5'" <
[email protected]>
Subject: Re: [Milsurplus] Millen HV Connector Strain Relief
Message-ID: <
[email protected]>
Content-Type: text/plain; charset="utf-8"
Just a word of caution from experience. Back around 1970 I had a KW amp with a separate PS. I believe it used a pair of 4-400s. In order to go from class C to linear, the drive had to be changed from one connector to another and they were SO-239s on the amp.
They were spaced about one inch from the Millen HV connector. So, one morning before work, I decided to go from one mode to the other, without switching off the HV. Done it before several times with no problem. I unscrewed the PL-259 that was 2 inches from
the HV connector and as I was putting it on the SO-239 one inch away from the HV, one of my fingers holding on to the PL-259 touched the Millen HV connector. The whole connector literally blew up. Thankfully my other hand was not touching anything. So, there
is smoke and a lot of strong smell of burnt flesh. I was knocked on my ass. As I managed to get up and walk around in a daze holding up my hand still smoking, my wife at the time comes into the radio room and asked
if I got a shock. A couple of weeks later I was working on a low voltage solid state PS and something fell on the large filter cap that sounded like a gun going off. I almost had a heart attack and looked behind me to see if the HV supply was still on the
floor or came after me, HI. True story. Be careful. 73 ? Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
908-902-3831
From:
[email protected] <
[email protected]> On Behalf Of Mark K3MSB
Sent: Saturday, November 16, 2024 12:44 PM
To: Military Radio Collectors Association (
[email protected]) <
[email protected]>; List Milsurplus <
[email protected]>; ARC5 <
[email protected]>
Subject: [Milsurplus] Millen HV Connector Strain Relief
I am running cables for the 2KV and 500V TBW Power Supplies and I was looking for a way to provide a strain relief for a Millen HV connector with parts on hand.
I found using the soft outer plastic shell from an old microphone connector works great. The electrical tape securely holds the shell to the HV connector while allowing the shell / connector to rotate freely around the HV cable.
73 Mark K3MSB
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End of Milsurplus Digest, Vol 247, Issue 35
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