42011.pdf

420-450-11

SPECIFICATIONS

Model

420-50-11

Frequency range

420 TO 450 MHz

Gain

11.3 dBd

Front to Back

20 dB

VSWR

1.2:1 Typical

Beamwidth

E=34°, H=43°

Stacking Distance

28"

Feed Imp. /Conn

50 OHMS / 'N' Female

Power Handling

1 KW

Mounting Mast

REAR / 2

Boom Length

60" / 1"

Wind Area / Survival

0.6 SQ FT / 100 MPH

Weight / ShipWt.

4 LBS , 6 LBS UPS

FEATURES

The 420-50-11 has been computer designed to cover the entire amateur 70 cm band. It is

ideal for repeater linking or any point to point application. Comparing it to a common

reference, the KLM 420-450-11, it has the same usable bandwidth with a full one dB more

gain and the pattern is much cleaner. Clean patterns in most applications provide more

reliable communications with less intermod. An optional stacking harness is available

when more than one antenna is required for reduced beamwidth or additional gain.

Because the antenna covers the whole band, many users find it a natural for ATV and

general repeater use. Users are surprised by the performance of this compact but potent

antenna.

Construction is classic M2 for long term electrical and mechanical integrity. Elements are

3/16 6061-T6 rod, mounted through the boom on UV stabilized insulators and locked in

place with stainless steel shaft retainers. The driven element module is CNC machined and

all connectors O-ring sealed. Internal connections are encapsulated in a space-age silicone

gel with nearly 4 times the dielectric strength of air. Balun connectors are triple-sealed to

the coax.

GES-ELECTRONICS

www.ges-electronics.com E-mail: radio@ges.cz

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