[ARES-SE] Wide Area Net this Sunday

[Mike (KA5CVH) Urich]

This Sunday at 7:00PM there will be a wide area (county wide) net on
the 145.170(-)(123.0) machine.  I am in New Mexico and can't make it
but I encourage as many of you who can to check in.

One of the purposes of the net this Sunday is to map how much power
you need to hit the repeater.  Richard, KD5URB will be takinig your
power in ERP (effective radiated power).  We only need to be in the
ball park so if you can hit it with 5 watts of transmitter power and
you have a 3dB gain antenna with 100 feet of LMR400 your ERP is about
7-8 watts.

If you want to be precise there are a number of calculators on the
internet.  Here are a couple

http://www.iowarepeater.org/iarc.erp.html
http://www.powerantenna.ca/calc_ERP.html

Also in round numberrs you can use these for your feedline.

RG-8X        3.7db per 100' at 144 MHz
RG-213       1.9 db
LMR-400    1.5 db


-- 
Mike Urich, KA5CVH
http://ka5cvh.com
LaPorte TX