SD-ER450B 477MHz Mobile Magnetic Mount Antenna 6dBi Stainless Steel 4.5m RG58 Cable SMA/FME 50Ω
The SD-ER450B is a high-gain 477MHz mobile antenna designed for UHF CB and commercial vehicle communication systems. With 6dBi gain, ≤1.5 VSWR, and 50Ω impedance, it ensures strong and stable signal transmission in outdoor and mobile environments.
Constructed from durable stainless steel and equipped with a 4.5m RG58 cable, this antenna supports SMA-Male or FME-Female connectors and is ideal for 4WD vehicles, fleet communication, and off-road applications.
- Model No.
- ER450B
- Type
- Off-Road Mobile Antenna
- Place of Origin
- China
- Frequency Range
- 477MHz
- Gain
- 6dBi
- Connector
- SMA-Male or FME-Female connector
- Cable Type
- 4.5 m RG58
- V.S.W.R
- Less than 1.5
- Impedance
- 50ohm
- Accept OEM
- yes
- Length
- 810mm
- Material
- Fiberglass,stainless steel
Product Overview:
The SD-ER450B is specifically tuned for 477MHz UHF CB communication, widely used in Australia and other UHF commercial radio markets. With 6dBi high gain performance, it significantly improves communication range for vehicle-mounted systems.
The antenna features screw-type installation for secure mounting and stable performance even in harsh outdoor conditions.

Electrical Specifications:
-
Frequency: 477MHz
-
Gain: 6dBi
-
VSWR: ≤1.5
-
Impedance: 50Ω
-
Radiation Type: Directional
-
Connector Options: SMA-Male or FME-Female
Optimized impedance matching ensures efficient power transfer and minimal signal reflection, delivering clearer communication over longer distances.

Mechanical Specifications:
-
Length: 810mm
-
Cable: 4.5m RG58
-
Material: Stainless Steel
-
Color: Black or Silver
-
Installation: Screw Mount
-
The stainless steel structure enhances durability, corrosion resistance, and mechanical strength, making it suitable for long-term outdoor 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.
leave a message
If you are interested in our products and want to know more details, please leave a message here, we will reply you as soon as we can.


