Typical VSWR curve
QHA 450-RH
Circularly Polarized Quadrifilar Helix for air-ground-air (AGA) communication
Description
- Circularly polarized quadrifilar helix antenna for fixed installation.
- Right-hand circularly polarized antenna (RHCP).
- Ideal for master/main antenna for air-ground-air (AGA) communication.
- The antenna has a hemispherical coverage that is also ideal for (AGA) communications.
- A sturdy glass-reinforced plastic shroud ensures effective protection against the weather.
- Supplied with cast clamp for mounting on 25 – 50 mm mast tubes.
- Reliable and robust design for optimum performance and long lifetime.
- The antenna is supplied with brackets.
Specification
| Electrical | |
| Model | QHA 450-RH |
|---|---|
| Frequency | 380 – 400 MHz |
| Antenna Type | Quadrifilar helix antenna |
| Max. Input Power | 100 W |
| Polarisation | Circular |
| Pattern Type | Hemispherical |
| Impedance | 50 Ω |
| Gain | Approx. 4 dBic (2 dBd) |
| VSWR | < 2.0:1 |
| Bandwidth | 20 MHz |
| Antistatic Protection | All metal parts DC-grounded (Connector shows a DC-short) |
| HCM Code(s) | HCM900VE00, 500VE00 |
| Environmental | |
| Operating temperature range | -20 °C to +60 °C |
|---|---|
| Survival Wind Speed | 200 km/h |
| Ingress Protection | IP56 |
| Mechanical | |
| Wind Area | 0.11 sq. m / 1.18 sq. ft |
|---|---|
| Connection(s) | N(f) |
| Materials | Antenna : Copper with Flexiform coaxial cable Shroud: 180 mm glass fibre tube Fittings: Aluminium and stainless steel |
| Colour | White, RAL 9018 |
| Historic Brand | Amphenol Procom |
| Height | Approx. 650 mm / 25.59 in. |
| Wind Load | 103 N (160 km/h) |
| Diameter | 180 mm / 7.09 in. |
| Weight | Approx. 4.5 kg / 9.92 lb. |
| Mounting | On 25 – 50 mm / 0.98 – 1.97 in. dia. mast tube |
Ordering Codes
| Model | Product No. |
|---|---|
| Circularly Polarized Quadrifilar Helix for air-ground-air (AGA) communication | 110000288 |
Additional Information
Typical Radiation Pattern (E-Plane)
Dimension
Clamp, Exploded view
PROCOM A/S reserves the right to
amend specifications without prior notice
PROCOM A/S • Smedetoften 12
DK 3600 Frederikssund • Denmark
Generated : 2026-06-27
Version 1