# SAO4503D

Rugged 450–470 MHz fiberglass omnidirectional base-station antenna with 3 dBd gain and 250 W power handling.

- Product page: https://catalog.satelusa.com/products/sao4503d/
- Category: Antennas
- Status: current
- Part number: SAO4503D
- Image: https://catalog.satelusa.com/images/products/sao4503d.webp

## Overview

SAO4503D is a lightweight omnidirectional antenna for fixed UHF base-station installations. Its internal copper-alloy radiating elements are enclosed in a white, UV-inhibited fiberglass radome for dependable service in exposed outdoor environments.

The antenna provides 3 dBd gain across 450–470 MHz and handles up to 250 W. An epoxy-coated, heavy-wall aluminum mounting sleeve and a 125 mph wind rating support demanding installations, while the standard N-female connector keeps integration straightforward. It comes with an aluminum pole-mount bracket assembly and stainless-steel V-bolts for masts up to 2⅜ inches in diameter.

## Highlights

- 450–470 MHz operating range with more than 20 MHz bandwidth
- 3 dBd omnidirectional gain and 250 W power rating
- UV-inhibited fiberglass radome protects internal copper-alloy elements
- Rated for wind speeds up to 125 mph (201 km/h)
- Includes pole-mount bracket hardware for masts up to 2⅜ in diameter

## Specifications

### Electrical

- **Frequency range:** 450–470 MHz
- **Gain:** 3 dBd
- **VSWR:** Less than 2.0:1
- **Bandwidth:** Greater than 20 MHz
- **Power rating:** 250 W
- **Impedance:** 50 Ω
- **Vertical beamwidth:** 40°

### Mechanical

- **Radiator:** Internal copper-alloy elements
- **Radome:** White, UV-inhibited fiberglass; 1 in (2.54 cm) diameter
- **Mounting sleeve:** Heavy-wall, epoxy-coated aluminum; 1.35 in (3.4 cm) diameter × 10 in (25.4 cm) long
- **RF connector:** N female
- **Length:** 36 in (91.44 cm)
- **Weight:** 5 lb (2.3 kg)
- **Flat plate area:** 0.21 ft²
- **Wind rating:** 125 mph (201 km/h)
- **Lateral thrust:** 14.2 lb (6.4 kg)
- **Included mounting hardware:** Two extruded-aluminum brackets with stainless-steel V-bolts; fits masts up to 2⅜ in diameter