SD-669CR 136-174MHz VHF Handheld Antenna | 2.0dBi SMA-Female 200mm Two Way Radio Antenna
The SHENGDA SD-669CR is a VHF handheld antenna designed for 136–174MHz communication systems. With 2.0dBi gain, low VSWR (<1.5), and 50 Ohm impedance, it provides stable and efficient signal transmission for two way radios.
Featuring a 200mm length, SMA-Female connector, and durable ABS rubber construction, this omni-directional antenna is ideal for professional and amateur handheld radio applications.
- Model No.
- SD-669CR
- Type
- Two way radio antenna
- Place of Origin
- China
- Frequency Range
- 136-174MHz
- Gain
- 2.0dBi
- Connector
- SMA-Female
- V.S.W.R
- Less than 1.5
- Impedance
- 50ohm
- Accept OEM
- yes
- Length
- 200mm
- Material
- ABS Rubber
Product Overview
The SD-669CR is engineered for VHF frequency operation within 136–174MHz, making it suitable for a wide range of handheld radios used in security, industrial, marine, and field communication environments.
Its 200mm length offers improved signal performance compared to shorter stock antennas, while maintaining portability and ease of use.

Electrical Specifications
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Frequency Range: 136–174 MHz
-
Gain: 2.0 dBi
-
Low VSWR ensures efficient power transfer with minimal signal reflection, supporting clear and reliable communication.
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VSWR: Less than 1.5
-
Impedance: 50 Ohm
-
Polarization: Vertical
-
Radiation Pattern: Omni-directional

Performance Characteristics
-
Length: 200 mm
-
Connector: SMA-Female
-
The ABS rubber construction provides flexibility, durability, and resistance to bending or cracking during daily use.
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Material: ABS Rubber
-
Color: Black


- 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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