OM2000 +

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Linear amplifier OM2000 + (left) for all shortwave bands of radio amateurs. Controlled here by a TS-520 transceiver
Interior view of an almost completed OM2000 +

The OM2000 + is a linear amplifier from OM Power , which covers all frequency bands of shortwave radio amateurs . The amplifier has a gain of 15  dB and a maximum output power of 2000  watts . The electron tube used is the air-cooled, ceramic tetrode FU-728F.

The OM2000A + is an identical linear amplifier that automatically adjusts itself when the frequency changes.

Technical specifications

Frequency bands Amateur radio bands 1.8 - 29.7 MHz + 50 MHz
Output power 2000 W SSB / CW
1500 W SSB / CW at 50 MHz
1500 W in RTTY
Input power 40 to 60 W for full output power
Input impedance 50 Ohm VSWR <1.5: 1
Reinforcement 15 dB
Output impedance 50 ohms
Output maximum SWR 2: 1
SWR protection Automatically switches to STBY when the reflected power exceeds 250 W.
Intermodulation 32 dBc
Harmonics At least −50 dBc
Better than −70 dBc at 30 - 50 MHz
tube FU-728F Ceramic tetrode
cooling Centrifugal fan
Mains supply Switchable 220 V, 230 V, 240 V
50/60 Hz
transformer 3 kVA
Safety circuits * Too high SWR
* Too high anode current
* Screen
current too high
* Grid current too high * Incorrect state of the amplifier
* Too high temperature
* "Soft start" to protect the fuse
* Safety switch when the amplifier is open
Show * OLED display 4x20 letters
* Analog display for forward and reverse power
LED indicators * ON Status
* STBY status
* error warning
* ON AIR status
Other properties * Connection for three antennas
* Memory for error and warning messages
* Automatic anode current
adjustment (BIAS) * No manual adjustment when replacing the tube
* Two-stage thermostat-controlled ventilation
* Silent vacuum relay
Dimensions * Width: 390mm
* Height: 195mm
* Depth 370mm
Weight 24 kg

See also

Web links

Commons : OM2000 +  - collection of images, videos and audio files

Individual evidence

  1. Internet presence of the company OM-Power
  2. Data sheet of the FU-728F