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Om Power OM4000A

Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Out of production
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
Om Power OM4000A
  • Product: Out of production
  • Brand: OM-Power
  • Model: OM4000A
  • SKU: 636
  • EAN: 7438641845507

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Om Power OM4000A

General description and advantages of OM4000A amplifier

The model OM4000A is a auto power amplifier, designed for use on all amateur bands 1.8 -29.7 MHz (including WARC) and all modes.

It has two ceramic tetrode valves FU728F.

The advantages of OM4000A:


  • Automatic switching between bands
  • Automatic Tuning with Ribbon according to segments
  • Automatic transfer of band-pass filter
  • Automatic switching of antenna switch
  • The ability to use 2 different antenna within a band or segment
  • Full compatibility with
    • -I COME
    • -YAESU
    • -Ten-Tec Orion
    • -Kenwood
    • -Icom transceiver protocol using microHAM output devices-CI-V (MK II, MK2R, MK2R +, etc)
    • -Flex Radio 6xxx series


OM4000A specification:


frequency coverage: Amateur bands 1.8-29.7 MHz including WARC
Output power: 4000w on SSB and CW,
3000w RTTY, AM and FM
Power input: Usually from 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 SWR output: 2:1
SWR Protection: Automatic switching to STBY, energy when reflected is 350W or above
Intermodulation distortion: 32 dB below rated power
Harmonic Suppression: < -50 DBc
pipes: 2 x ceramic tetrode FU728F
Cooler: + centrifugal fan axial fan
Power supply: 2 x 230 V-50 Hz one or two phases
Transformers: 3kVA toroidal transformer parts 2
Dimensions: 485 x 200 x 455 mm (WxHxD)
Weight: 46 kg
The protection circuits: -Too high VSWR
-Power input too high
-Output power is too high
-Plate Voltage too low
-Current anode too high
-Too high current screen
-Grid Current too high
-PA Mistuning
-Switching Protection Hot
-Soft start to protect the fuses
  -"Switch-on" to open amplifier
LED Indicators: -Current grid control (Ig1)-2 LEDS
-WAIT-(. 150 sec) tube preheating
-OPR-modes of operation
-Dead-bankruptcy, turning off for about. 2 sec.
-BLOCK-working state
-ANT 1-ANT is in use
-ANT 2-ANT is in use
-ANT-ANT selection
directions bar graph: -Power-LED 50
-Reflected power-20 LEDS
-Current Ig2-10 LED
-Anode voltage, anode current, tuning-30 LEDS

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