Topband: 50 ohm direct burial coax cable

[bruce whitney via Topband]

You might want to check out Davis Bury-flex.
I have used in in conduit - under water, for several years with no problems.
Bruce W8RA
 
 


________________________________
From: "mstangelo at comcast.net" <mstangelo at comcast.net>
To: Bill Wichers <billw at waveform.net> 
Cc: topband at contesting.com 
Sent: Tuesday, June 3, 2014 11:18 AM
Subject: Re: Topband: 50 ohm direct burial coax cable


Bill,

Thanks. I will check it out.

Mike N2MS
----- Original Message -----
From: Bill Wichers <billw at waveform.net>
To: mstangelo at comcast.net, topband at contesting.com
Sent: Tue, 03 Jun 2014 14:58:51 -0000 (UTC)
Subject: RE: 50 ohm direct burial coax cable

Usually "direct burial" cable is just a PE jacket with a flooding compound in the braid. 

Times Microwave makes a direct burial variant of their LMR-400 called "LMR-400-DB". It adds a flooding compound in the braid. The flooding compound will seal small fractures in the jacket.

BTW, for everyone, there is a new "dry" type of water blocking compound used in fiber optic cables that is usually in the form of a powder or a yarn. When it gets wet it expands and seals the damaged cable area. It's lots easier to work with than the more traditional gel-type flooding compounds. Maybe if we're lucky we'll see someone start making coax that way!

  -Bill

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