[AMPS] MHV & SHV Connector supplies.

[km1h@juno.com]

On Sun, 17 Jan 1999 14:49:28 EST nospam4me@juno.com (Skip S Isaham)
writes:
>
>Re: MHV and SHV connectors.
>
>I purchase quite a few connectors through Newark which is also called 
>Farnell. Just got a bag of Amphenol MHV sent in. You can find them on 
>line also. I prefer to use their older (pre-Farnell merger) short fat 
>catalog, 

Me too Skip, got them both.


but a phone call can request the un-wieldy over weight phone
>book size catalog. I also purchase HV wire from Newark, rated to 10KV, 
>quality stuff from
>Belden and other mfgrs.

Overpriced. You can buy nice  20-30KV wire from Alden Products or even
from xfmr companies. I was buying reel ends of 30KV #18 wire from a local
xfmr mfg at half his cost.

BTW, I just ran the hi-pot on the RG-213 with Teflon PL259/SO239 up to
7500V and held it for 1 hour. Way over the cable rating but it would
appear to be mighty safe at the 5KV and under level with new cable. I did
not try the standard style Amphenol dielectric and would not even think
of using RatShack or other off-shore crap.
Would also suggest a HV series resistor and A HV fuse.

73  Carl   KM1H



>73's
>skipp    wv6f
>
>http://sonic.ucdavis.edu     for Southpark and other fun.
>http://pilot.ucdavis.edu     for the TRS-80 home page.
>
>From: Carl Clawson <CarlClawson@compuserve.com>
>To: AMPS <amps@contesting.com>
>Subject: [AMPS] HV Connectors
>Date: Sat, 16 Jan 1999 01:25:55 -0500
>Message-ID: <199901160126_MC2-66DD-EBE0@compuserve.com>
>
>
>What do you like for HV connectors these days? The old Millen 
>connectors
>seem to be hard to find, and I don't consider them safe for use 
>except
>inside an enclosure.  I will need to run HV (ca 3 KV) from one cabinet 
>to another and would like to make a good choice. "Good" means safe 
>and
>cheap.
>Next best is safe and uncheap.
>
>What I'm thinking of is is something with recessed contacts so that
>accidental contact with an energized connector would not likely result 
>in
>shock. Yes, of course, any energized HV connector is dangerous when 
>disconnected but I want the laws of probability in my favor. (I
>absolutely
>cringe when I look at the picture of the 3.5 kV supply in the `91 
>ARRL
>handbook. Two open Millen sockets on the front panel of a cabinet 
>sitting
>on the floor right at kitty-cat-nose height.)
>
>MHV are suggested in some ARRL designs, but I don't find current
>information on them which makes me wonder if they're going obsolete. 
>SHV appear to still be made but are more expensive. Both of these are
>coaxial, which is unnecessary although it does provide a convenient 
>geometry for
>the
>recessed contacts. So what do you like?
>
>Thanks & 73 from the new Carl on the block, WS7L.  
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