----- Original Message -----
Sent: Monday, December 12, 2005 4:59
PM
Subject: [digitalradio] Digital Modes
Success On 160 Meters
If you want to have consistent successful
digital mode contacts of any reasonable distance you have to run a full size
antenna, either a 1/2 wave dipole or 1/4 wave vertical. Night time D layer
absorption on 160 meters is very unforgiving when using an 80 meter G5RV into
a tuner or 80 meter doublet shorted together into a tee vertical.
You also have to run more
power than the customary 25-30 watts, with 75-100 watts pretty much a
requirement.
With an 80 meter dipole and 25 watts you
can expect to make contacts out to approximately 100 miles. A full size dipole
and 75-100 watts will allow contacts of up to approximately 500 miles. A one
wavelength loop and 75-100 watts will allow for contacts of up to 1500 miles.
a 1/4 wave vertical with 64 1/4 wave radials and 75-100 watts will get
you into the 2000-4000 miles range.
It's just the nature of the
beast.
73 & Merry Christmas,
Thomas F.
Giella, KN4LF
Lakeland, FL, USA
Grid Square EL97AW
27 57 26.5 N 81 56
46.6 W
[EMAIL PROTECTED]
PODXS 070 PSK Club
#349
He who dies with the most toys doesn't go
to Valhalla
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