CD28/37/70 133-163MHZ VHF DIPOLE ANTENNA RFI

DESCRIPTION

Utilising a patented matching circuit, the CD28-37-70 antennas are end fed dipole antennas combining a durable thermoplastic housing with a flexible tapered stainless whip section resistant to knocks and bends.
Performance - Exhibits 3 dB improvement in performanceover a 1/4 wave whip
Versatile - Ground independent design allows use in alternative mounting locations
Rugged - The transformer circuit is housed within a high impact thermoplastic moulding which is virtually indestructible
Unique termination method simplifies installation and re-cabling in the field
Designed, manufactured and patented in Australia
(1) MopoleTM antennas such as the CD28 have been shown to exhibit a 3dB improvement in received signal level in the field when compared to a quarter wave whip however in pattern tests exhibit only 1.5 to 2dB over a quarter wave (equivalent to 1.5-2dBi).

This improvement in performance can be attributed to a lower radiation angle level of these ground independent antennas.

SPECIFICATIONS:
Band
133 - 163MHz

Tunable Bandwidth
4 MHz @ 1.5:1 VSWR 8 MHz @ 2.0:1 VSWR

Nominal Gain dBi
3

Tuning
Field tune to minimum VSWR using supplied chart

Power W
50

Cable and Connector
Not included, order separately. See note (2) in specsheet

Base
Threaded stud mount

Whip Material
17-7 PH tapered stainless steel whip with moulded base coil assembly

Whip Length mm
1340

VSWR
4 MHz @ 1.5:1 VSWR 8 MHz @ 2.0:1 VSWR

 

VHF Ground Independent Mopole™- CD28 Series
Installation Sheet

 

Weight: 0.1520 kg