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[TowerTalk] Heliax or RFS vs LMR: Tech points

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Subject: [TowerTalk] Heliax or RFS vs LMR: Tech points
From: jreid@aloha.net (Jim Reid)
Date: Sun, 29 Aug 1999 19:32:39 -1000
It was asked about LMR-600:

> Unpublished is the 1.5 MHz Times #

> LDF4 at 30 MHz:  6.31 kW.....1.5 MHz:  28.6 k
> LMR600:  30 MHz:   3.1 kW....1.5 MHz: non published but I should have it
from
>Times Microwave.

Go to the TM Attenuation and Power Handling site at:

    http://www.timesmicrowave.com/cgi-bin/calculate.5

Select the LMR cable of interest,  and the frequency.

You find,  per Times Microwave,  for LMR-600:

at 30 MHz:     0.42 dB attenuation per 100 feet and power handling
of 5.5 kW.

at 1.8 MHz:    0.1 dB attenuation per 100 feet and power handling of
22.8 kW.

at 1.5 MHz:    0.09 dB attenuation per 100 feet and power handling of
24.9 kW.

Hope this info is of some help to the group.

73,  Jim,  KH7M
On the Garden Island of Kauai


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