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@contesting.com] On Behalf Of
jimlux
Sent: Dienstag, 3. November 2020 18:10
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Where to get LMR 400
On 11/3/20 8:24 AM, dj7ww@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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