Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*Topband\:\s+isolation\s+transformer\(s\)\s+in\s+RX\s+antenna\s+feedlines\s+\(\?\)\s*$/: 5 ]

Total 5 documents matching your query.

1. Topband: isolation transformer(s) in RX antenna feedlines (?) (score: 1)
Author: Pete Smith N4ZR <n4zr@contesting.com>
Date: Fri, 28 Nov 2014 16:51:09 -0500
I ran across a sketchy reference to this idea, described as a way to block common mode signals from making it into the shack by cutting off the paths from the coax shield to the RX input. Is there an
/archives//html/Topband/2014-11/msg00169.html (6,918 bytes)

2. Re: Topband: isolation transformer(s) in RX antenna feedlines (?) (score: 1)
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Sat, 29 Nov 2014 01:04:43 -0400
Pete. Here I used RG6 crammed with 10 turns on two 3" toroid on each side of a ground block for every cable. The common point ground block is about 10 feet from the shack and consists of the over the
/archives//html/Topband/2014-11/msg00171.html (8,194 bytes)

3. Re: Topband: isolation transformer(s) in RX antenna feedlines (?) (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Sat, 29 Nov 2014 08:36:28 -0500
I ran across a sketchy reference to this idea, described as a way to block common mode signals from making it into the shack by cutting off the paths from the coax shield to the RX input. Is there an
/archives//html/Topband/2014-11/msg00172.html (10,729 bytes)

4. Re: Topband: isolation transformer(s) in RX antenna feedlines (?) (score: 1)
Author: Herbert Schoenbohm <herbs@vitelcom.net>
Date: Sat, 29 Nov 2014 12:40:23 -0400
My question then is: 1. Does a multiple sets of grounding blocks for the RG--6 outside the shack hooked to a common point ground hurt anything? 2. Does a toroid ring on each side of the grounding blo
/archives//html/Topband/2014-11/msg00173.html (11,272 bytes)

5. Re: Topband: isolation transformer(s) in RX antenna feedlines (?) (score: 1)
Author: "Tom W8JI" <w8ji@w8ji.com>
Date: Sat, 29 Nov 2014 15:48:41 -0500
My question then is: 1. Does a multiple sets of grounding blocks for the RG--6 outside the shack hooked to a common point ground hurt anything? It doesn't hurt anything. It actually helps everything.
/archives//html/Topband/2014-11/msg00174.html (10,668 bytes)


This search system is powered by Namazu