[TowerTalk] Low Loss Coax
James C. Hall, M.D.
nwtncc@iswt.com
Wed, 9 Jan 2002 11:16:37 -0600
Hi George:
I tinkered around with the same sort of thing here with LMR-600. In the HF
frequencies, there is VERY little loss with or without angle pieces. The
minimum bending radius with LMR-600 is 4" . I found that I could easily run
this cable in 4" PVC, through a gentle curve 90 degree turn and back through
an LB box without any problem.
Jamie
WB4YDL
----- Original Message -----
From: George Shaw <george.shaw@ukf.net>
To: <towertalk@contesting.com>
Sent: Wednesday, January 09, 2002 7:45 AM
Subject: RE: [TowerTalk] Low Loss Coax
>
> I have been looking at a lot of coax specs and talking to a lot of people
> about it. From what I see two stand out in the "flexible" area Westflex
103
> and Buryflex 9914. Straight runs benefit from LM-400 or LM-600.
>
> The best advice I have received for a very helpful gent is from Steve
Davis
> at Davis RF http://www.davisrf.com.
>
> I have another question to add.
>
> What is the minimum static bending radius on coax. Very few give that
> detail. And how do you deal with an installation of say LM-600 that has to
> go horizontally then vertically (from the 12th floor apartment to the roof
@
> 15th floor)? Is it OK to fit a 90 degree connector? What sort of loss
would
> there be? I have hear mention of 1.5db per connector?
>
> --
> George Shaw
>
> eMail: george.shaw@btinternet.com
> eMail: george.shaw@ukf.net
> Fax/Voice Mail: +44 (0) 87 0133 6126
> Mobile: +44 (0) 77 4036 1163
> ICQ#: 1741675
>
>
> -----Original Message-----
> From: owner-towertalk@contesting.com
> [mailto:owner-towertalk@contesting.com]On Behalf Of WA9ALS - John
> Sent: 09 January 2002 03:12
> To: James Hall; Julio; towertalk@contesting.com
> Subject: Re: [TowerTalk] Low Loss Coax
>
>
> DITTO!
> ----- Original Message -----
> From: "James Hall" <nwtncc@iswt.com>
> To: "Julio" <jperalta@tampabay.rr.com>; <towertalk@contesting.com>
> Sent: Tuesday, January 08, 2002 7:07 PM
> Subject: Re: [TowerTalk] Low Loss Coax
>
>
> >
> > Hi Julio:
> >
> > I used LMR-600 for my long runs that are relatively straight and
BuryFlex
> > (9914) up the tower and close to the radios. Works like a champ !
> >
> > Jamie
> > WB4YDL
> >
> >
> > > From: "Julio" <jperalta@tampabay.rr.com>
> > > Date: Tue, 8 Jan 2002 18:41:04 -0500
> > > To: <towertalk@contesting.com>
> > > Subject: [TowerTalk] Low Loss Coax
> > >
> > >
> > > I just re-installed my 89' crank-up tower after being off the air for
> about
> > > 6 years. I would like to ask the group what should I consider for low
> loss
> > > coax. Taking into consideration the problems with raising and lowering
> the
> > > tower and of course the rotor loop.
> > >
> > > My plan is to install 2 HF antennas and 3 V-UHF antennas on the tower.
> > > Unfortunately the tower had to be installed 250 feet from the radio
> room so
> > > I'm very concerned with loss due to long coax runs, especially on the
> higher
> > > bands.
> > >
> > > I would appreciate any advice.
> > >
> > > Thanks & 73's Julio, WB4OOJ
> > >
> > >
> > >
> > >
________________________________________________________________________
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>
> ________________________________________________________________________
> This list is sponsored by the new eHam.net Store. When you buy products
> like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
> the eHam Store for the same price you pay direct, a portion of the sale
> price goes to support this list. Check it out at http://www.eham.net.
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>
>
> ________________________________________________________________________
> This list is sponsored by the new eHam.net Store. When you buy products
> like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
> the eHam Store for the same price you pay direct, a portion of the sale
> price goes to support this list. Check it out at http://www.eham.net.
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________________________________________________________________________
This list is sponsored by the new eHam.net Store. When you buy products
like ICE filters, Array Solutions StackMatch, or M-Squared Antennas from
the eHam Store for the same price you pay direct, a portion of the sale
price goes to support this list. Check it out at http://www.eham.net.
-----
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