Date: Sat, 11 Sep 2010 08:35:48 EDT
From: TexasRF@aol.com
Subject: Re: [Amps] SHV connectors great, but where to find coax?
Dave and all, the last SHV connectors I purchased were from Pasterrnak, the
high priced specialist folks.
They have SHV cable and mating chassis connectors for RG213/U coax. II
wanted the security of extra voltage handling because of around 10 KV used in a
twt power supply.
The coax connectors were about $25 and the chassis connectors were about
$15.
They worked out really well and I will never use any other type of hv
connector on future projects.
A three inch length of heat shrink was installed on the cable ends for
reinforcement and added mechanical security for the coax shields. This is a
cheap and effective way to add protection in a critical for safety location.
I have wondered if adding a dab of silicone grease to the center pin to
coax dielectric area before connector assembly might be a good idea to
eliminate air gaps and moisture traps. Any opinions on that?
73,
Gerald K5GW
## I looked up SHV on wikipedia... and it sez a SHV is only good for
3500 v rms ... so add 41% = 5 kv dc. They also say there are higher
voltage. I looked and couldn't find anything from anybody...that was more
than 5 kv. This version you found from pasternack.... other than it takes
213u size coax... does the mating female chassis connector + 213-U size
male..rated for 10kv ??
## one could also probably use use RG-393 teflon coax. It's a tiny bit
smaller than 213. [.390" vs .405"] RG-393 is solid teflon dielectric...
and is
probably overkill... but I have loads of it.
## I just may have finally found a HV connector I like... provided it handles
8 kvdc..safely. I gave up on Aldens, Millens etc. I then just hardwired the
B+
at both ends..with sta-kon crimp connectors [also soldered]... and machine
screws.
Takes awhile to get apart though.
## Is pasternack the only ones who carry RG-213 size SHV male connectors ?
Is the chassis female a regular SHV chassis connector... or a special 10 KV
rated one ??
Tnx........ Jim VE7RF
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