OM2501A 2.5kW Automatic Amplifier


Made on order, delivery in 3-4 weeks.

The OM2501A 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 one ceramic tetrode FU728F or GU84B (specify below) and delivers up to 2500+ watt on all HF bands.

Built on order, delivery time 2-3 weeks.

6,868.75 $7,352.31 $
6,662.69 $7,131.74 $

  • EUR: 6,250.00 € - 6,690.00 €
  • SEK: 73 188 kr - 78 340 kr

Save when buying together with a remote control!

OM 2500A Remote Control

Remote Control expands possibilities of using OM 2501A up to 10 meters away from your operating position. When needed it is also possible to connect the Remote Control unit to a LAN network and control over the internet it using a special software.

Delivery time 2-3 weeks.

OM2501A Advantages

  • Full compatibility with
    • – ICOM
    • – YAESU
    • – ELECRAFT
    • – Ten-Tec Orion
    • – Kenwood
    • – Icom transceive protocol using by microHAM devices –CI-V output (MK II, MK2R, MK2R+, etc)
    • – Flex Radio Series 6xxx
    • – Apache Labs Anan
  • RF sensitive Band and Frequency switching, for use with radios which do not have CAT
  • Automatic switching between bands
  • Automatic tuning with the band according to segments
  • Automatic switching of band pass filter – BAND DATA output compatible with YAESU radios (BCD code)
  • Automatic switching of the antenna switches – maximum number of antennas is 10, controlled by BCD output code
  • Remote control via PC Windows Application

OM2501A Specifications

Frequency coverage: Amateur Bands 1.8 – 29.7 MHz including WARC
Power output: 2500 W in SSB and CW on HF bands,
2000W in RTTY/FM
Input Power: 30 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: better than -32dBc
Suppression of harmonics: < -50 dBc
Tube: 1x FU-728F or GU84B ceramic tetrode (specify at order)
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 2kVA
Dimensions: 485 x 200 x 455mm (width x height x depth)
Weight: 40 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 manually adjust after changing the tube
  Three programmable working modes of the axial blower
  Full QSK operation
  Many operational parameters to display
  REMOTE control – connector for LAN connection – remote control software free of charge
  Support automatic external ANT switching

Power amplifier is interfaced to LAN via XPORT made by Lantronix (type XP1001000-05R). More info can be found at www.lantronix.com .

Default factory settings of XPORT are:

IP address:

These are default settings. You can modify any of these by going to XPORT web GUI via your web browser. We do not recommend changing any other parameters of the XPORT interface as loss of communication can be caused by doing so. There is no default user name or password. It is highly recommended to secure the web interface with username and password.

For remote control and monitoring over LAN special software is needed. It is available free of charge, it can be downloaded here.

SKU: OM2501A Categories: , Tags: , ,

FU-728F ceramic tetrode, GU84B ceramic tetrode