EB-144/RK2M ASSEMBLY MANUAL
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2
ANTENNA SYSTEMS, INC.
4402 N. SELLAND AVE.
FRESNO, CA 93722
(559) 432
-
8873 FAX: 432
-
3059
For best
TERRESTRIAL
performance, 80 watts, or more, are recommended for mobile operation. Contacts with base sta-
tions over 100 miles away are common and communications are possible for over 350 miles when the terrain permits prop-
agation. The Eggbeater will handle a full Kilowatt in base station applications. Base station, contest and field day operations
with the Eggbeater allows rapid fire communication with all horizontally polarized stations, in all directions. Its also great for
nets and emergency stations requiring instant communications in all directions. The Eggbeater is not designed to replace a
good directional antenna, but where space, time, or budget are strong factors, it will prove a valuable addition to any fixed
or mobile station. It was originally designed for the DOD for mobile use.
Any distortion or bends in the loops incurred during mobile use can and should be straightened out as soon as practical. AS
WITH ANY ANTENNA FED WITH RF ENERGY, AVOID CONTACT OR CLOSE PROXIMITY WHILE TRANSMITTING.
SATELLITE APPLICATIONS:
The Eggbeater is very effective as a omnidirectional satellite antenna because it produces Right
-
Hand Circular polarization
off the top. When mounted 1/8 wave above an auto roof or
M
2
’
s
RK
-
2M Reflector Kit
for base installations, the signal level
off the top lobe increases by as much as 6 dB. No rotation or steering is necessary. Circularity is optimized in the 144
-
146
MHz region but is still effective from 135 to 150 MHz.
Experimenters: Try combining the Eggbeater with other vertical antennas. The fiberglass spacer mast is not required for
operation except to insulate the crossover points. It could be replaced with a metallic element to act as a vertical radiator on
70 centimeters or any other frequency, or simply be used as a support for a vertical above the Eggbeater. It may be possi-
ble to combine the Eggbeater with an HF mobile antenna so that optimum performance of both would be preserved. As you
can see from the APPLICATIONS, the EGGBEATER is a versatile antenna.....let your imagination run free! Write and tell
us what you have done with your Eggbeater.
Note: #10 Copperweld (steel copper
-
clad wire) is used in the loops for maximum efficiency. The steel is exposed at the
ends and may show signs of rust in various environments. This effect is cosmetic only but can be reduced by coating the
ends of the wire with epoxy, RTV, Penetrox or equivalent after assembly.
