[TowerTalk] LMR600 male DIN

[Bob K6UJ]

John,

Point well taken and I appreciate your input. This is uncharted waters 
for me
going beyond RG8 and PL-259's, hihi.
I did what probably most of you have done and made an excel spreadsheet
showing all the feedlines, RG, LMR, Heliax, Cellflex, etc. in different 
sizes
and the loss for 100 ft for all the bands from 80 to 10 meters.
I also added a cost column, which is very illuminating hihi.

As far as connectors go I have decided to go with DIN connectors.
So now to decide on the feedline.  Cost wise the 7/8" Cellflex looks 
very good
and has just about the same loss as LDF5-50, at about half the price.


Bob
K6UJ




On 9/6/16 5:00 AM, john at kk9a.com wrote:
> 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 at contesting.com>
> Subject:	[TowerTalk] LMR600 male DIN
> From:	"Jim Thomson" <jim.thom at telus.net>
> Date:	Mon, 5 Sep 2016 01:49:44 -0700
>
> Date: Sat, 3 Sep 2016 16:50:33 -0000
> From: <john at kk9a.com>
> To: <towertalk at 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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