Challenger 3.8m Multiband Offset Tx/Rx Antenna
The Challenger 3.8m Multiband Offset Tx/Rx Antenna delivers high-gain, rugged performance for mission-critical gateway, military, and teleport operations. It supports C-band (Linear and Circular), Ku-band Linear, and X-band Circular frequencies with excellent isolation and sidelobe rejection.
The one-piece, stretch-formed reflector ensures precise beam shaping and performance. Available in both manual and dual-axis motorized mounts, the antenna system is designed for long-term durability with galvanized steel and aluminum construction.
Made in the USA, the 3.8m system is field-proven and ideal for deployments requiring multiband support and remote control capabilities.
Key Features
- 3.8m single offset-fed design with high-efficiency reflector
- Supports Ku Linear, C Linear, C Circular, and X Circular bands
- Manual or dual-axis motorized Az/El mount options
- High gain with compliant sidelobe performance per ITU-R S.580
- Motorized feed assembly for polarization adjustment
- Robust stretch-formed panels with reinforcement ribs
- Wind-rated up to 150 mph (survival, stowed)
- Optional auto-locate and tracking control system
- Made in the USA
Technical Specifications
- Reflector: 3.8m, stretch-formed reinforced panels, offset-fed
- Polarization: Ku Linear, C Linear, C Circular, X Circular
- Frequency Bands:
- Ku Linear: 10.7–12.75 GHz (Rx), 13.75–14.5 GHz (Tx)
- C Linear: 3.625–4.2 GHz (Rx), 5.85–6.425 GHz (Tx)
- C Circular: 3.7–4.2 GHz (Rx), 5.925–6.425 GHz (Tx)
- X Circular: 7.25–7.75 GHz (Rx), 7.9–8.4 GHz (Tx)
- Gain (Midband):
- Ku: 51.2 dBi (Rx), 53.2 dBi (Tx)
- C Linear: 42.0 dBi (Rx), 46.1 dBi (Tx)
- C Circular: 41.2 dBi (Rx), 46.1 dBi (Tx)
- X Circular: 47.7 dBi (Rx), 48.5 dBi (Tx)
- VSWR (Max):
- Ku: <1.5:1 (Rx), <1.2:1 (Tx)
- C Linear: <1.5:1 (Rx), <1.3:1 (Tx)
- X Circular: <1.2:1
- X-Pol Isolation (On Axis):
- Ku: >30 dB
- C Linear: >30 dB
- X Circular: >20 dB
- Port-to-Port Isolation:
- Ku: >45 dB (Rx), >80 dB (Tx)
- C Linear: >60 dB (Rx), >85 dB (Tx)
- C Circular: 75 dB
- X Circular: >20 dB
- Mount Type: El-over-Az Kingpost, manual or motorized
- Azimuth Adjustment: ±82° (manual), +75°/-85° (motorized)
- Elevation Adjustment: 0°–90° (manual), 5°–90° (motorized)
- Polarization Adjustment: ±270° (motorized), 360° (manual)
- Wind Rating: 45 mph operational, 150 mph survival (stowed, high-wind)
- Temperature Range: -20°F to 125°F (-28.9°C to 51.7°C) operational, -60°F to 180°F (-51°C to 82°C) survival
- Compliance: ITU-R S.580 sidelobe requirements
