Power Amplifiers for FM transmitters: 1500 W, 2000 W, 3000 W, etc
- ▸ AFM-1500 1500-watt FM broadcast power amplifier, 87.5–108 MHz — a wideband MOSFET RF power amplifier engineered for the FM broadcast band with excellent efficiency and reliability.
- ▸ 1500 W nominal output from MOSFET technology — the broadband MOSFET design delivers 1500 watts of nominal RF power with high operational efficiency (68% minimum).
- ▸ Phase- and gain-matched for high-power combining — amplifier phase and gain are matched so two units combine for 3 kW transmitters and four units for 5 kW FM transmitters.
- ▸ Compatible with BEL and GCEL FM transmitters — works with BEL (HVB/HVM 164A, HVM 165A) and GCEL (131/136) 2×3 kW and 2×5 kW FM radio transmitters.
- ▸ Excellent 65 dBc harmonic specification — minimum 65 dBc harmonic distortion at 1500 W ensures a clean broadcast-grade output signal.
- ▸ Automatic safety shutoff on mismatch — shutoff activates at load VSWR above 1.8, protecting the amplifier from reflected power damage.
- ▸ Front-panel display and USB interface — per-module current and temperature plus load VSWR, RF power, and gain are shown on the front panel; USB enables remote monitoring.
- ▸ 3U rack-mount chassis with forced-air cooling and three-year warranty — the 19-inch rackmount design integrates into broadcast equipment racks and is backed by a 3-year warranty.
AFM-1500 Features
- ▸ FM broadcast RF power amplifier — wideband MOSFET technology
- ▸ Frequency range 87.5 MHz to 108 MHz — FM broadcast band
- ▸ 1500 watts nominal output power
- ▸ 65 dBc harmonic distortion specification
- ▸ Phase- and gain-matched for combining — 3 kW (2 units) / 5 kW (4 units)
- ▸ Compatible with BEL and GCEL FM transmitters
- ▸ Automatic safety shutoff — at VSWR > 1.8
- ▸ 68% minimum efficiency
- ▸ Front-panel display — per-module current/temperature, VSWR, RF power, gain
- ▸ USB remote interface
- ▸ Forced-air cooled, 3U rack-mount
- ▸ Three-year warranty
AFM-1500 Specifications
| Parameter | Specification |
|---|---|
| Model | AFM-1500 |
| Type | FM broadcast RF power amplifier (wideband MOSFET) |
| Application | FM broadcasting; high-power FM transmitter combining |
| Frequency Range | 87.5 MHz to 108 MHz |
| Rated Power Output | 1500 W |
| Input for Rated Output | 2.5 W (max) |
| RF Checkpoint at Output | 0.707 Vrms (+10 dBm max) |
| Input Impedance | 50 Ω nominal |
| Input VSWR | 1.2:1 maximum |
| Input Modulation | FM |
| Input Connector | Type-BNC (rear panel) |
| Output Impedance | 50 Ω nominal |
| Output VSWR | 1.2:1 maximum |
| Harmonic Distortion | 65 dBc minimum at 1500 W |
| Mismatch Protection | Automatic safety shut-off at VSWR > 1.8 |
| Output Connector | Type 7/16" (front panel) |
| Power Amplifier Supply | 27 VDC, 100 A (external) |
| Controller Supply | ±12 VDC, 1 A (external) |
| Power Consumption | 2200 W max |
| Efficiency | 68% minimum |
| Display | Front-panel — per-module current/temperature, VSWR, RF power, gain |
| Remote Interface | USB |
| Cooling | Forced air (self-contained fans) |
| Size | 19" rack, 3U |
| Weight | 75 lbs (34 kg) |
| Operating Temperature | 0°C to +30°C |
| Warranty | 3 years |
Compatibility: Designed to work with BEL (HVB/HVM 164A, HVM 165A) and GCEL (131/136) 2×3 kW / 2×5 kW FM radio transmitters. Requires external 27 VDC supply.
| Title | Link |
|---|
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