[TowerTalk] Where to get LMR 400
dj7ww at t-online.de
dj7ww at t-online.de
Tue Nov 3 12:32:45 EST 2020
Yes, the current heats up the dielectric around the center conductor.
RG393 with the same conductor size and its PTFE dielectric is specified at
9500W on 6m.
73
Peter
-----Original Message-----
From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
jimlux
Sent: Dienstag, 3. November 2020 18:10
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Where to get LMR 400
On 11/3/20 8:24 AM, dj7ww at t-online.de wrote:
> RG213 is specified with 1300W on 6m
>
> 73
> Peter
MIL-C-17/74 (RG 213 spec) sort of says that..
It says 3700V rms maximum
Figure 2 shows the "straightline" from 1200W (@50 MHz) down to 180 W
(@1000 MHz), probably based on thermal limits from the current in the
center conductor - 0.0888" OD seven strands that are 0.0296" each
(between AWG 20 and AWG 21)
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