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RFI HPM-RM-148156 VHF Roof Mount Antenna, 148-156 MHz, -3 dBq

RFI HPM-RM-148156 VHF Roof Mount Antenna, 148-156 MHz, -3 dBq

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Item ID:
168015999
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Options/MPN:
HPM-RM-148156
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RFI HPM‑RM‑148156 VHF Roof Mount Antenna (148-156 MHz) is supplying factory tuned to cover 148 to 156 MHz at a VSWR of less than 1.5:1.
Regular price $48.45
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Product Description

The RFI HPM‑RM‑148156 VHF Roof Mount Antenna is a compact, factory‑tuned ¼‑wave antenna covering 148-156 MHz with a VSWR < 1.8:1 and a gain of ‑3 dBq. Measuring less than 440 mm in height and designed to fit the industry‑standard MB9 roof‑mount base, it solves clearance issues where a conventional quarter‑wave whip cannot be installed. A moulded lower section and helically wound stainless‑steel upper whip deliver exceptional flexibility and durability for harsh industrial and mining environments.

Product Features:

  • The helically loaded ¼-wave radiator provides full VHF performance in a low-profile form factor under 440 mm tall.
  • It is factory tuned for 148 – 156 MHz (other HPM-RM models cover 70 – 87 MHz and 148 – 174 MHz bands).
  • The moulded base section and flexible stainless-steel whip withstand impacts, constant vibration, and tight overhead clearances.
  • The standard MB9 roof-mount interface enables quick, secure installation on vehicles and fixed sites.
  • It offers a typical gain of –3 dBq with VSWR < 1.8:1 to ensure dependable signal quality across the targeted band.

Application Areas:

  • It is ideal for mining trucks, loaders, and underground machinery operating beneath low ceilings or in tunnel networks.
  • It is suitable for fleet cars, utilities, and emergency-service vehicles requiring a low-profile VHF antenna without compromising performance.
  • It performs reliably in industrial plants and warehouses where cranes, pipes, or gantries limit antenna height.
  • It benefits rural and remote communications systems that need rugged, flexible antennas for VHF voice and data links.
  • It is perfect for any roof-mount installation restricted by overhead obstacles where a standard quarter-wave whip is impractical.

In the Box:

  • 1 × RFI HPM‑RM‑148156 VHF Roof Mount Antenna (148-156MHz).

Documents:

RFI HPM-RM Series Antenna - Datasheet

Product Specifications

MPN HPM-RM-148156
Antenna application Vehicle Antenna
Antenna cable type No cable
Antenna port connectors No connector
Antenna type Ground Dependent
Band 148 - 156 MHz
Brands RFI
Cable and connector Not included, order separately
Coverage type Omni-directional
Frequency band VHF High Band 118-180 MHz
Frequency mhz 70-175
Height 3
Installation type External mounting
Length 40
Low pim No
Max frequency mhz 156
Max gain dbd dbi -3
Mimo support No
Min frequency mhz 148
Min gain dbd dbi -3
Mount supported Wall mount, Roof mount
Mount supported detailed MB9 base
No of antenna ports 1
Nominal gain dbq -3
Power w 25
Technologies supported VHF
Tuned bandwidth <1.5:1
Tuning Full Band
Whip length mm 380mm
Whip material ABS, brass and stainless steel
Width 3