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OM4000A Endstufe

General description and the advantages of the OM4000A Amplifier

The OM Power model OM4000A is an automatic power amplifier, designed for use on all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) and all modes.

It is equipped with a two pieces of ceramic tetrode FU728F.




Full compatibility with:

  • - ICOM
  • - YAESU
  • - Icom transceive protocol using by MicroHAM devices ( CI-V output )


Automatic switching between bands

Automatic tuning within the band according to segments

Automatic switching of band pass filter

Automatic switching of antenna switches

The possibility to use 2 different antennas within one band or segment


Specification of OM4000A:

Frequency coverage: Amateur Bands 1.8 – 29.7 MHz including WARC
Power output: 4000W in SSB and CW,
3000W in RTTY, AM and FM
Input Power: Usually 60 to 90W for full Output Power
Input Impedance: 50 Ohm, VSWR < 1.5 : 1
Power Gain: 17 dB
Output Impedance: 50 Ohm unbalanced
Maximum Output SWR: 2:1
SWR protection: Automatic switching to STBY, when reflected power is 350W or higher
Intermodulation distortion: 32dB below nominal output
Suppression of harmonics: < -50 dBc
Tubes: 2x FU728F Ceramic tetrode
Cooler: Centrifugal blower + Axial blower
Power supply: 2 x 230V – 50 Hz one or two phases
Transformers: 2 pcs of toroidal transformer 3kVA
Dimensions: 485 x 200 x 455mm (width x height x depth)
Weight: 46 kg
Protection circuits: - VSWR too high
  - Input power too high
  - Output power too high
  - Plate voltage too low
  - Anode current too high
  - Screen current too high
  - Grid current too high
  - Mistuning of PA
  - Hot switching protection
  - Soft start for protecting your fuses
  - “switch-on blocking “ at opened amplifier
LED indicators: - Current at control grid (Ig1) - 2 LEDs
  - WAIT – preheating of tube (150 sec.)
  - STBY - standby
  - OPR – operation mode
  - FAULT – failure, switching off for abt. 2 sec.
  - INHIBIT – operating condition
  - ANT 1 - which ANT is in use
  - ANT 2 – which ANT is in use
  - ANT - ANT selection
Bar graph indications: - Power output – 50 LEDs
  - Reflected power – 20 LEDs
  - Ig2 current - 10 LEDs
  - Anode voltage, anode current, tuning – 30 LEDs

Sie haben Fragen zu diesem Produkt?  Nehmen sie sofort Kontakt mit uns auf »
6.799,01 EUR incl. 19 % MWSt
5.713,45 EUR Exportpreis - ausserhalb Europa

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