Tnx everyone for all the input on coax for jumpers. Some great ideas and info. I bought 100’
of Harbour Industries RG400. I didn’t want to take a chance on imported cable. Also bought
crimp PL-259’s. I should be set.
73,
N2TK, Tony
From: N2TK, Tony [mailto:tony.kaz@verizon.net]
Sent: Friday, March 16, 2018 2:47 PM
To: 'Gedas' <w8bya@mchsi.com>; 'towertalk@contesting.com'
<towertalk@contesting.com>
Subject: RE: [TowerTalk] Skinny QRO coax jumpers for station interconnection
Tnx Gedas. Yeah, want to make sure it is the good stuff I get.
N2TK, Tony
From: Gedas [mailto:w8bya@mchsi.com]
Sent: Friday, March 16, 2018 2:29 PM
To: N2TK, Tony <tony.kaz@verizon.net <mailto:tony.kaz@verizon.net> >;
towertalk@contesting.com <mailto:towertalk@contesting.com>
Subject: Re: [TowerTalk] Skinny QRO coax jumpers for station interconnection
Hi Tony. Harbour Industries is a HUGE leader in the world of high-temp, quality
Teflon cables and wires etc. They are the ones who make my RG-142. I personally
would stay away from buying cables and assemblies from Asia unless you knew
exactly who you were dealing with and had some assurance of the quality cables
you would be getting from them. Several people here have suggested a couple
real good USA sources and I would look into them if I were you. I just make my
own here but that is because I have plenty of cable around.
Gedas, W8BYA
Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 3/16/2018 2:20 PM, N2TK, Tony wrote:
Gedas,
Tnx for the info.
Looking on eBay I see several listings for RG400 from China. I had heard
Harbour Industries in VT makes a high quality cable. Not sure about the stiff
from China.,
N2TK, Tony
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Gedas
Sent: Friday, March 16, 2018 2:13 PM
To: towertalk@contesting.com <mailto:towertalk@contesting.com>
Subject: Re: [TowerTalk] Skinny QRO coax jumpers for station interconnection
RG-303 is a good cable but not as good as RG-400 or RG-142 because it uses only a single shield. Also, I would still use RG-400 over RG-213 because it meets his desire for a small O.D. cable and because he is using it for switching filters etc where the higher shielding effectiveness of the RG-400 is desirable and will offer better immunity to cross talk etc.
Plus, with a Teflon based coax you never have to worry about the center conductor migrating from center, even under QRO and extreme heat and tight bends. I was biased when I posted using RG-142 because I was lucky enough to find a 1000' roll of it and have been using it for jumpers for years & years. But RG-400 is more flexible and of the same high quality as 142.
It used to be that RG-213 meant an upgraded quality version of a cable like RG-8 (solid dielectric & VF = 0.66) but with two copper braids vs.
one. RG-214 was the same as RG-213 but used a silver coated copper center conductor
and dual silver coated copper braids for even higher performance and better S.E.
For MIL applications we used lots of RG-223, RG-142, RG-400, RG-214, and of course
tons of semi-rigid. I was very, very lucky when I was able to purchase five
left-over 1000' rolls of new RG-214 for, you don't want to know, and have enjoyed
giving most of it away to friends & family.
Gedas, W8BYA
Gallery at http://w8bya.com
Light travels faster than sound....
This is why some people appear bright until you hear them speak.
On 3/16/2018 1:33 PM, Rob Atkinson wrote:
I see no mention of RG 303 and wonder if that's been discontinued.
for jumpers I'd use 213. If you need a tighter bend radius I'd
re-arrange or re-locate the connection points instead of using skinny
silver coax.
Rob
K5UJ
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com <mailto:TowerTalk@contesting.com>
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com <mailto:TowerTalk@contesting.com>
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com <mailto:TowerTalk@contesting.com>
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk