You want some lossy coax? I have a couple old rolls where both the center
conductor and shield are nichrome. VERY lossy stuff!
David Robbins K1TTT
e-mail: mailto:k1ttt@arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Peter
Voelpel
Sent: Saturday, November 29, 2014 18:05
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Coax loss. Has anybody measured it ?
VF of RG-393 is .70 as with other PTFE coax.
The highest coax loss of my station is on 2m with .7db through LCF 158-50
with UCF78-50 pigtails, total length is 75m from antenna relay to antennas.
On all the HF bands attenuation is not higher then .5db where I use LCF
78-50 with SCF 12-50 pigtails on 10-40m and RG218 on 80m and 160m.
73
Peter
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Jim
Thomson What baffles me is that 213 U per times calculator is 1.1 db per 100
feet...at 29 mhz, yet RG-393 is 1.1 db per hundred ft. 213 has a single
copper braid. 393 has TWO silver plated braids. 213 has a 12 ga CU
stranded center conductor. 393 has a silver stranded center conductor.
VF on 213 is .66 VF on 393 is .69
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