Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+75\s+ohm\s+feedline\s*$/: 6 ]

Total 6 documents matching your query.

1. [TowerTalk] 75 ohm feedline (score: 1)
Author: locher@sonic.net (Bob Locher)
Date: Fri, 04 Jul 1997 12:23:55 -0400
I don't understand the reluctance to use 50 to 75 ohm impedance transfomers. I built two of the ones featured in all recent ARRL Handbooks - took me about an evening, and total cost was about $30 inc
/archives//html/Towertalk/1997-07/msg00172.html (7,598 bytes)

2. [TowerTalk] 75 ohm feedline (score: 1)
Author: w4an@contesting.com (Bill Fisher, W4AN)
Date: Fri, 4 Jul 1997 17:35:41 -0400 (EDT)
I dont understand the need for these boxes if you are feeding monoband yagis. The ARRL Antenna Handbook and ON4UN's book both describe how to use asynchronous transformers out of coax. I use them for
/archives//html/Towertalk/1997-07/msg00174.html (8,871 bytes)

3. [TowerTalk] 75 ohm feedline (score: 1)
Author: n4zr@contesting.com (Pete Smith)
Date: Sun, 06 Jul 1997 21:20:27
Raises an interesting question, but one beyond my quantitative abilities. Assuming the autotransformers are built well - adequate wire size, proper core, big-enough box, etc. - what is the expected l
/archives//html/Towertalk/1997-07/msg00227.html (8,477 bytes)

4. [TowerTalk] 75 ohm feedline (score: 1)
Author: k9ig@contesting.com (Greg Clark)
Date: Sun, 06 Jul 1997 16:36:37 -0700
It's been interesting following this thread for the past few days. In Pete's reply he almost said what I'm about to: Why bother with the transformers at all?? I have many runs of 75ohm hardline runni
/archives//html/Towertalk/1997-07/msg00230.html (9,470 bytes)

5. [TowerTalk] 75 ohm feedline (score: 1)
Author: cebik@utkux.utcc.utk.edu (L. B. Cebik)
Date: Mon, 7 Jul 1997 07:03:48 -0400 (EDT)
Here are a couple of notes that may be useful in deciding whether or not to use transformers with a run of 75 ohm cable with a 50-ohm antenna and a transmitter/amp designed for 50-ohm systems. Assum
/archives//html/Towertalk/1997-07/msg00241.html (10,296 bytes)

6. [TowerTalk] 75 ohm feedline (score: 1)
Author: k1ttt@berkshire.net (David Robbins)
Date: Wed, 09 Jul 1997 00:25:52 +0000
just another thing to throw a monkey wrench in the works... do some rough calculations: compare wavelengths at the two busiest frequencies on 80m in contests 300/3.5mhz = 85.7m 300/3.8mhz = 78.9m dif
/archives//html/Towertalk/1997-07/msg00320.html (9,170 bytes)


This search system is powered by Namazu