[TowerTalk] Coax loss. Has anybody measured it ?

[David Robbins]

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 at arrl.net
web: http://wiki.k1ttt.net
AR-Cluster node: 145.69MHz or telnet://k1ttt.net

-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of Peter
Voelpel
Sent: Saturday, November 29, 2014 18:05
To: towertalk at 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 at 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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