M2 Antenna Systems EB-432/RK70CM Assembly Manual

M2 Antenna Systems, Inc.

Model No: EB-432/RK70CM

Eggbeater Satellite Antenna

Peak= 5.62 dBi Total Field

ElevaƟon

Shown with RK-70CM

Reflector Kit

Circular Omni Antenna

SPECIFICATIONS:

Model ......................................... EB-432/RK70CM

Frequency Range ....................... 400 To 470 MHz

Gain, Overhead 90 ..................... 5.5 dBic Typical

Impedance ................................. 50 OHMS

VSWR ......................................... < 2.0:1

VSWR ......................................... 1.5:1 @ 420– 450 MHz

Pattern. ....................................... Omni Directional

Polarity ....................................... RH Circular Overhead

Polarity ....................................... Horizontal @ Horizon

Power Handling .......................... 500W Max

Mounting ..................................... 1-1/2” to 2” Nom.

Connector ................................... “N” Female

Size ............................................. 13.5” H x 9.5” W

Wind Survival / Wind Area .......... 100 MPH / .07 Sq. Ft.

Weight / Ship Wt. ........................ 2 Lbs. / 3 Lbs.

FEATURES:

The EB-432 EGGBEATER offers exciting new performance characteristics for both fixed and mobile operations.
The EGGBEATER produces smooth Omni directional HORIZONTAL polarity at the horizon. Above the horizon, the pat-
tern transforms to RIGHT HAND CIRCULAR, making it a natural for OSCAR satellite use. By spacing the EGGBEATER
1/8 wave above a metal surface or the RK-70CM for base installations, the circular lobe increases by 6 dB, producing a
hemispherical pattern. No rotation or steering is required. For terrestrial mobile, base, net control, contest or field day op­eration, increasing the distance above ground or over a metallic surface improves the horizontal radiation by up to 6 dB.
This produces instantaneous communications in all directions. Hams with little room or budget for larger antennas will
experience a new standard of performance with the EB-432/RK70CM.

M2 Antenna Systems, Inc. 4402 N. Selland Ave. Fresno, CA 93722

Tel: [phone] Fax: [phone] Web: www.m2inc.com

©2015 M2 Antenna Systems Incoporated

05/28/15

Rev.02

EB-432/RK70CM ASSEMBLY MANUAL

Caution: The copperweld steel loop elements are packed in a tightly
wrapped condition. Use extreme care while unpacking the loops. Work in a
clear area and be sure no one is standing near during unpacking.

Tool Required: 3/32” and 5/32 Allen wrench (provided) and 1/2 & 9/16 end wrench or socket .

1. To facilitate shipping, the loops are bent slightly in the middle. Straighten these, and any other bends, so
the elements form round circles. Locate the rod and thread the loop elements through the crossed holes in the
tip to their midpoints.
NOTE: be sure the loop elements are not shorted together at the crossover point; the pattern will be distorted.

2. Align the elements carefully with the terminals at the top of the balun case. Install the set-screws with the
3/32” Allen wrench, and insert the ends of the loop wires into the appropriate terminals. Insert wires until ends
butt against the Delrin collar at the base of the fiberglass rod. Tighten the 3/32” set-screws. This completes
assembly. A common mobile mounting 3/8-24 thread in bottom of balun case is used for mounting the EB-

432.

MOBILE INSTALLATION:

For best TERRESTRIAL results in a horizontally polarized mobile installation, the Eggbeater should be at
least two feet above the top of the vehicle, preferably higher. To prevent damage to the antenna or mount, a
heavy duty spring should be installed 4” to 26” below the threaded insert on the balun case. Another mast
section can be added below the spring if additional height is desired. To enhance the overhead circular
pattern for SATELLITE communications, mount the EB-432 loops at 1/8 wave (3.5”) above the roof, basically
at roof level or attached directly to a mag-mount.

FIXED LOCATION INSTALLATION:

For best TERRESTRIAL results, no reflector is
required. Mount the EB-432 as high as possible and
preferably on the top of a mast.

For mostly SATELLITE communications use, add the
RK-70cm Reflector as shown. Alternately, mount the
EB-432 directly on a metal plane of mesh or solid
metal 15” square or larger. Mounting this way will
reduce your terrestrial performance by about 6 dB but
improve your satellite signal by about the same
amount. The Eggbeater produces an omnidirectional,
horizontally polarized pattern, so no particular
orientation is necessary.

EB-432 WITH RK-70CM REFLECTOR