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RH775S Telescopic Dual Band 144/430MHz Handheld Antenna | SMA Type 2.15dBi Extendable Two Way Radio Antenna
The SD-RH775S is a telescopic dual-band handheld antenna designed for 144/430 MHz VHF and UHF radios. Featuring an extendable structure (110mm–410mm), 2.15dBi gain, and low VSWR (<1.5), it delivers improved signal performance compared to standard stock antennas.
Equipped with an SMA-type connector and omni-directional radiation pattern, this antenna is ideal for amateur radios, portable communication devices, and field operations requiring flexible length adjustment and enhanced reception.
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Product Details
Model No.:RH775S
Type:Two way radio antenna
Place of Origin:China
Frequency Range:144/430MHz
Gain:2.15dBi
Connector:SMA-type
V.S.W.R:Less than 1.5
Impedance:50ohm
Accept OEM:yes
Length:110/410mm
Material:TPEE
Product Overview
The SD-RH775S is a telescopic dual-band handheld antenna designed for 144/430 MHz VHF and UHF radios. Featuring an extendable structure (110mm–410mm), 2.15dBi gain, and low VSWR (<1.5), it delivers improved signal performance compared to standard stock antennas.
Equipped with an SMA-type connector and omni-directional radiation pattern, this antenna is ideal for amateur radios, portable communication devices, and field operations requiring flexible length adjustment and enhanced reception.
Electrical Specifications
Frequency: 144 / 430 MHz
Gain: 2.15 dBi
Low VSWR ensures efficient signal transmission with minimal reflection, improving communication clarity and stability.
VSWR: < 1.5
Radiation Pattern: Omni-directional
Polarization: Vertical
Performance Characteristics
Length: 110 mm (collapsed) / 410 mm (extended)
Connector: SMA-type (customizable: SMA-Male / SMA-Female)
Installation: Screw type
Color: Black
The telescopic design provides flexibility while maintaining mechanical stability for daily use.
NOTICE
During the installation process, avoid any collisions.
It is strictly prohibited to disassemble the antenna components; otherwise, it may lead to poor antenna performance.
The installation position of the antenna should be free of any obstructions.
When used outdoors, it is necessary to equip with lightning protection facilities.
may contain electronic components. Do not discard them randomly.
