OM4001A Automatic 1.8 – 30MHz Linear Amplifier

  • 1.8-30 MHz  Amateur Band Coverage
  • 4000W+ SSB/CW or
  • 3000W RTTY & DIGI modes
  • Fully automatic operation of band change and tuning with or without CAT
  • Remote control via LAN
  • 40-60W Drive
  • 220-240V 50-60Hz Mains Input
  • 2 Year Warranty

Price excl VAT: £6,000.00
incl VAT: £7,200.00

Available on back-order


The OM4001Ais a fully automatic HF linear amplifier covering all amateur bands 1.8-30Mhz

Utilising a pair of FU-728F ceramic tetrode the OM2000A is designed for high power continuous duty.

Specification of OM4001A:

Frequency coverage: Amateur Bands 1.8 – 29.7 MHz including WARC
Power output: 4000+ W in SSB and CW on HF bands,
3000W in RTTY and DIGI modes
Input Power: Usually 40 to 60W for full Output Power
Input Impedance: 50 Ohm, VSWR < 1.5 : 1
Power Gain: 17 dB
Output Impedance: 50 Ohm unbalanced
Maximum Output SWR: 3:1
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
Response speed of AUTO tune: less than 0,5s within same BAND, less than 2s if out of BAND
Power supply: switchable voltages – 220/230/240V for 50Hz or 230/240/250V for 60Hz
(or other primary voltages e.g. 200V 50/60Hz for Japan)
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
  – Anode current too high
  – Anode voltage error
  – Screen current too high
  – Screen voltage error
  – Grid current too high
  – Grid voltage error
  – Heating voltage error
  – Mistuning of PA
  – Temperature too high
  – Soft start for protecting your fuses
  – “switch-on blocking“ at opened amplifier
Indications: 4.3″ color touch screen display
Features: High level of protection
  Memory for faults and warnings, easy maintenance
  Automatic set-up anode current (BIAS) – no need to adjust manually after changing the tubes
  Three programmable working modes of the axial blower
  Full QSK operation
  Many operational parameters to display
  The smallest and lightest 4000 W Power Amplifier on the market

Download the manual HERE