- 1. [TowerTalk] Elementary feedline loss question (score: 1)
- Author: Pete Smith N4ZR <n4zr@contesting.com>
- Date: Fri, 04 Apr 2014 09:53:55 -0400
- If I terminate a long 50-ohm coaxial cable with a 50-ohm dummy load, and put an MFJ-259B on the other end, and it reads R=56, X=0 at a given frequency, what is the mathematical relationship between t
- /archives//html/Towertalk/2014-04/msg00055.html (6,979 bytes)
- 2. Re: [TowerTalk] Elementary feedline loss question (score: 1)
- Author: "David Robbins" <k1ttt@arrl.net>
- Date: Fri, 04 Apr 2014 15:06:45 +0000
- Well... if it is just cable loss and the cable is uniform the R should approach Z0 as the length increases no matter what the load is... the less loss the slower the approach to Z0. If the cable is t
- /archives//html/Towertalk/2014-04/msg00060.html (9,202 bytes)
- 3. Re: [TowerTalk] Elementary feedline loss question (score: 1)
- Author: Grant Saviers <grants2@pacbell.net>
- Date: Fri, 04 Apr 2014 11:31:02 -0700
- Perhaps a less error prone way to measure loss is to use your transmitter, dummy load, and SWR/power meter. I put the power meter at the transmitter and set the power level on the SWR meter. Then mov
- /archives//html/Towertalk/2014-04/msg00069.html (8,769 bytes)
- 4. Re: [TowerTalk] Elementary feedline loss question (score: 1)
- Author: Steve Hunt <steve@karinya.net>
- Date: Fri, 04 Apr 2014 22:02:10 +0100
- Here's a method I use: Terminate the line with a short circuit. At the other end of the line use the analyser to find the frequencies where the line impedance is lowest resistance and zero reactance
- /archives//html/Towertalk/2014-04/msg00075.html (8,961 bytes)
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