According to the timesmicrowave and commscope websites at 30MHz LMR600 has
0.4dB/100ft loss and LDF4 has 0.357/100ft. They are very close in specs
and price so of the two I would pick the most durable. The real point of
my post was that K6UJ seemed more concerned about the connector than the
coax that is was attached to. Personally I would rather have 300ft of LDF7
with and N connector than 300ft of LMR600 with a commercial quality DIN.
John KK9A
To: <towertalk@contesting.com>
Subject: [TowerTalk] LMR600 male DIN
From: "Jim Thomson" <jim.thom@telus.net>
Date: Mon, 5 Sep 2016 01:49:44 -0700
Date: Sat, 3 Sep 2016 16:50:33 -0000
From: <john@kk9a.com>
To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] LMR600 male DIN
I would not use LMR600 for the runs to the tower. Even the small LDF4 has
less loss, it is tougher, UHF, N and DIN connectors are readably available
and if purchased surplus it is cheaper than LMR600. If you care about coax
loss I would look at larger Heliax.
John KK9A
## why would ldf4..aka 1/2 inch heliax, have less loss than LMR-600DB ?
600 uses a 5.5 gauge center conductor..which is pretty big. both are foam.
stated loss from both manufacturers is almost identical. Having said that,
1/2 inch
heliax could be obtained locally pretty cheap, brand new.
## That RFS brand heliax is the bomb. Corrugated Aluminum shield...and a
corrugated
copper center conductor = very flexible. u can get it in several
sizes, up
to 1.25 inch.
Jim VE7RF
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