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

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