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 [Australian Patent # 596830 and 656793]
(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:
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133 – 163MHz |
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4 MHz @ 1.5:1 VSWR 8 MHz @ 2.0:1 VSWR |
|
3 |
|
Field tune to minimum VSWR using supplied chart |
|
50 |
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Not included, order separately. See note (2) in specsheet |
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Threaded stud mount |
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17-7 PH tapered stainless steel whip with moulded base coil assembly |
|
1340 |
|
4 MHz @ 1.5:1 VSWR 8 MHz @ 2.0:1 VSWR |
- VHF Ground Independent Mopole™- CD28 Series
- Installation Sheet