[CQ-Contest] Station Re-Build - Coax

Thu Mar 14 10:45:12 EDT 2019

Did some more checking on eBay for RG179.
Besides selling some unmarked cable as "Harbor", there are listings that show Harbour Industries horizontal vs vertical printing on the coax. All my Harbour that I bought from a supposedly good source shows all the printing vertical. You really need to be careful.
There is some RG400 coax labeled Thermax which the big distributors sell. 
73,
N2TK, Tony

-----Original Message-----
From: tony.kaz at verizon.net <tony.kaz at verizon.net> 
Sent: Thursday, March 14, 2019 10:28 AM
To: 'N4ZR' <n4zr at comcast.net>; 'Wayne Kline' <w3ea at hotmail.com>; 'charlie carroll' <k1xx at k1xx.com>; 'cq-contest at contesting.com' <cq-contest at contesting.com>
Subject: RE: [CQ-Contest] Station Re-Build - Coax

Pete,
Checked some RG142 vs RG400. With a hand squeeze test it is easier to flex the RG400. Not scientific but you can feel the difference.

My RG400 is marked "M17/128 RG400 MIL DTL 17 27478 HARBOUR INDUSTRIES".
It is tinned double shielded braid with a stranded tinned center conductor. Nothing attracts to a magnet. It is easy to make a 2" coil. But it will spring back if you let it go.  

I did buy some RG179 on ebay. There are no markings on it. So somewhat concerned. It does seem to check out fine. But?? Will be buying Harbour marked coax so less doubt. Some folks on eBay are selling "HARBOR" coax. 😊

73,
N2TK, Tony

-----Original Message-----
From: CQ-Contest <cq-contest-bounces at contesting.com> On Behalf Of N4ZR
Sent: Thursday, March 14, 2019 8:49 AM
To: Wayne Kline <w3ea at hotmail.com>; charlie carroll <k1xx at k1xx.com>; cq-contest at contesting.com
Subject: Re: [CQ-Contest] Station Re-Build - Coax

Oops.  I did some more dissecting on the cable, and I'm wrong about the shielding. That leaves only the absence of printing - this is advertised as Harbour Industries RG-400 - and its stiffness.  This stuff is quite hard to bend in even an 8" coil.  Can anyone who has used real RG-400 confirm whether it feels supple and flexible to the touch?  I have one jumper in my station that looks like the same stuff, but which is very supple.  I bought it at Dayton a few years aho, already connectorized. I can believe a 1" minimum bend radius with it, but not with the stuff from China.

73, Pete N4ZR
Check out the Reverse Beacon Network
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On 3/13/2019 9:51 AM, N4ZR wrote:
>
> I just bought 10 feet of RG-400U (supposedly Harbour Industries) 
> through E-bay for $13.  Belatedly, I learned it was coming from China.
> It's now here, but I don't think it is for real - it only has one 
> shield, and is somewhat stiff.  At least the inner conductor isn't 
> magnetic.There's no printing on the cable.
>
> Buyer beware.
>
>
> 73, Pete N4ZR
> Check out the Reverse Beacon Network
> at<http://reversebeacon.net>, now
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
> On 3/12/2019 11:35 PM, Wayne Kline wrote:
>> I third  the sugjestion of the RG400   small enough for  all the switching   in a more then one radio setup.
>>
>> The  tight bend radius the  small diameter make for a clean instlation that coupled with the double shielding   it’s a WIN WIN
>>
>> Watch  Ebay or other surplus suppliers
>>
>>
>>
>> Wayne W3EA
>>
>>
>>
>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986>  for 
>> Windows 10
>>
>>
>>
>> ________________________________
>> From: CQ-Contest<cq-contest-bounces at contesting.com>  on behalf of 
>> charlie carroll<k1xx at k1xx.com>
>> Sent: Tuesday, March 12, 2019 10:23:06 PM 
>> To:cq-contest at contesting.com
>> Subject: Re: [CQ-Contest] Station Re-Build - Coax
>>
>> Keith:
>> A couple very similar candidate cables are RG-400 and RG-303. RG-400 
>> is double shielded while 303 is single.  They're good as 
>> interconnects because they have a small bend radius (about 1").
>> RG-400 uses multi-strands of copper for the center conductor; RG-300 
>> uses copper clad steel.  Either will handle 1500 watts at HF.
>>
>> 73 charlie, k1xx
>>
>> On 3/12/2019 7:51 PM, Keith Dutson wrote:
>>> My multi-two station, with third spotting station, is being rebuilt 
>>> into new digs.  I have a lot of 3-4 foot RG213 cables running 
>>> between the amp, power meter, tuner and switch.  I have heard there 
>>> may be a smaller cable that has very little loss, but handles 1500 
>>> watts.  I would appreciate any comments on what is being used today.  Thanks.
>>>
>>> 73, Keith NM5G
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