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.
- 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
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Frequency: 144 / 430 MHz
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Gain: 2.15 dBi
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Low VSWR ensures efficient signal transmission with minimal reflection, improving communication clarity and stability.
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VSWR: < 1.5
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Radiation Pattern: Omni-directional
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Polarization: Vertical
Performance Characteristics
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Length: 110 mm (collapsed) / 410 mm (extended)
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Connector: SMA-type (customizable: SMA-Male / SMA-Female)
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Installation: Screw type
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Color: Black
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The telescopic design provides flexibility while maintaining mechanical stability for daily use.
- part of antenna is individual packed in PE/PVC Bag.
- Each antenna will be tuned to best performance before delivery.
- We will provide customized packaging services based on the size of your antenna products (such as length, diameter, interface type, etc.) to ensure zero damage during transportation.
- All packages have passed the 1.2m drop test
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.
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