RFI CD 28 VHF Ground Independent Mopole 148 – 175 MHZ – Stud mount no coax The CD28 series are ground independent Mopole antennas ideal in “alternative” mounting positions such as gutter, mirror or trunk mounts. CD28-41-70 Features: Utilising a patented matching circuit, the CD28-41-70 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 performance over 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 ¼ wave whip however in pattern tests exhibit only 1.5 to 2dB over a ¼ wave (equivalent to 1.5-2dBi). This improvement in performance can be attributed to a lower radiation angle level of these ground independent antennas. (2) Available preterminated with 5m 8058 RG58C/U. Use -73 or -53 suffix to replace -70 or -50 suffix Band 148 – 175MHz Tunable Bandwidth 5 MHz @ 1.5:1 VSWR 10 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) Whip Material 17-7 PH tapered stainless steel whip with moulded base coil assembly Whip Length mm 1340 VSWR 5 MHz @ 1.5:1 VSWR 10 MHz @ 2.0:1 VSWR
