same with stainless steel hardware!!!
I'm working on HB AMP in garage and have magnet on work bench checking
claimed SS washers / split washers are worst! very - very magnetic and
junk as I see it (Those washers were bought at local hardware store, as my
stash was out)
FWIW,
good results with Stainless with Kemah Hardware when I could buy local from
them,
but now live far from them so going with mail order
www.marineboltssupply.com <http://www.marineboltssupply.com>
JUNK CONNECTORS: Had barrel connector fail, corrosion, at top of tower but
far enough out boom that couldn't reach.... No longer install barrel
connectors in the air. If I have to install new coax, so be it - from
connection at Driven element to ground level.
PL259
Connectors, like SO239 chassis mount for PL259, where can we obtain quality
connector these days??
Robert W5AJ
Midland, Texas
http://pages.suddenlink.net/w5aj/
-----Original Message-----
From: Amps [mailto:amps-bounces@contesting.com] On Behalf Of Jim Brown
Sent: Thursday, April 08, 2021 1:49 PM
To: amps@contesting.com
Subject: [Amps] Junk Connectors, Junk Coax
On 4/8/2021 7:06 AM, Chris Wilson wrote:
> I am now slowly changing out all UHF Chinese junk to branded N types
Junk connectors are a scourge. In North America, if it isn't vintage MIL
spec or Amphenol, it's junk. I learned this the hard way. When getting back
on the air in 2003 after 20+ years off, I stocked up with lots of those
cheap adapters from hamfest vendors. Over the next six years, they cause me
no end of grief. Some fell apart, some overheated with power during a
contest because the center conductor in an elbow was a tiny spring, some
caused exactly the sort of intermittent or power handling problem that Frank
is experiencing.
There is ZERO need for any thing better than a well-installed 83-1SP (no
suffix) below 2M. The hand wringing about non-constant impedance is the
result of a failure to understand transmission line fundamentals. Nearly all
of my coax (except for RG400 jumpers) is foam, and I've never had an issue
with it melting because I use good quality coax from known
factories, I use a quality iron and a good bench vise to hold the work,
and coax is all Belden, Commscope, or Davis RF. I have nothing sold as
"LMR400 equivalent." And I have a lot of hard line.
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