Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+When\s+is\s+coax\s+\'contaminated\'\s+beyond\s+use\?\s*$/: 6 ]

Total 6 documents matching your query.

1. Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: terry burge <ki7m@comcast.net>
Date: Sun, 3 Feb 2019 19:54:54 -0800 (PST)
Hi Folks, A few years back some 9913 I was using apparently got water in the coax. I say this because of fluctuating SWR issues and I noted the shield when cut into was almost 'black'. So for my mino
/archives//html/Topband/2019-02/msg00056.html (7,213 bytes)

2. Re: Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: Mike Waters <mikewate@gmail.com>
Date: Sun, 3 Feb 2019 22:10:12 -0600
I don't know exactly what you mean by "dump power", but I suggest that you throw that nasty corroded coax in the garbage. Do not pass go, do not collect $200. ;-) Not unless you can figure out a way
/archives//html/Topband/2019-02/msg00057.html (8,145 bytes)

3. Re: Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: Joe <nss@mwt.net>
Date: Sun, 3 Feb 2019 23:07:29 -0600
Use the length, At the far end put it into a dummy load. Put your watt meter at the transmitter, make say 100 watts, move watt meter to the dummy load and see how many watts are there. Thats the loss
/archives//html/Topband/2019-02/msg00060.html (8,860 bytes)

4. Re: Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: "Chortek, Robert L." <Robert.Chortek@berliner.com>
Date: Mon, 4 Feb 2019 05:29:27 +0000
Hi Terry, It seems to me that it ought to be fine to use the coax. The fact the coax has more loss than non-contaminated coax shouldnt matter, since the whole point is to dump the wattage as part of
/archives//html/Topband/2019-02/msg00061.html (9,439 bytes)

5. Re: Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: terry burge <ki7m@comcast.net>
Date: Sun, 3 Feb 2019 21:54:11 -0800 (PST)
Hi Bob, The issue I'm faced with is I have 168' to the base of my tower. The Comtek 4-square box is another 64' up the tower. To get to the wattmeter just outside my shack window is perhaps 15-20 mor
/archives//html/Topband/2019-02/msg00062.html (11,401 bytes)

6. Re: Topband: When is coax 'contaminated' beyond use? (score: 1)
Author: Jeff Blaine <KeepWalking188@ac0c.com>
Date: Mon, 4 Feb 2019 00:05:49 -0600
The last version of my elevated 40m 4-square (~2016-7?) was built with belden stuff that had the black coating all along the length.  I buffed it up and used crimp connectors.  Worked great. My reaso
/archives//html/Topband/2019-02/msg00063.html (13,173 bytes)


This search system is powered by Namazu