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GU84B Tube

2500 W output automatic tuning HF amplifier. 160 m to 10 m. See the optional Remote Control Unit for ON/OFF, Operate/Standby, and that can be connected to WLAN for remote operation.

General description of the OM2501A automatic Amplifier
Frequency coverage:            Amateur bands 1.8 – 29.7 MHz including WARC                       
Drive power:                         30 to 60 W for full output power
The automatic linear amplifier OM2501A is designed for all short-wave amateur bands from 1.8 to 29 MHz (including WARC – bands) and all modes. It is equipped with a one ceramic tetrode FU-728F
Specification of OM2501A:
Power output:                                      2500 W in SSB/CW on HF bands, 2000W on RTTY, FM
Input impedance:                                50 Ohm VSWR < 1,5:1
Output amplification:                          17 dB
Output impedance:                             50 Ohm unbalanced
Maximum output SWR:                      3:1
SWR protection:                                  Automatic switching to STBY when reflected power is 350 W or higher
Intermodulation distortion:              better then -32 dBc
Suppression of harmonics:                < -50 dBc  
Response speed of AUTO tune:       less than 0,5s within same BAND, less than 1s if out of BAND
Supported TRXs-CAT      :                 All amateur radio transceivers, including SDRs.

Tube:                                                      One  GU-84B ceramic tetrode
Cooling:                                                 Centrifugal blower + axial blower
Power supply:                              switchable 220V, 230V, 240V, 60 Hz or other primary
Power requirements                  Two 20A circuits with NEMA 6-15/20 receptacle        
Transformers:                                       Two 2.0 kVA toroidal transformers
Protection circuits:            
·         SWR too high
·         Anode current too high
·         Screen current too high
·         Mistuning of power amplifier
·         Temperature too high
·         Soft start for fuse protection
·         “switch –on blocking “at startup
Indicator:                                              
·           4.3” color touch screen display
Features                               
·         supports automatic external ANT switching
·         Memory for faults and warning, easy maintenance
·         Automatic set-up idle current (BIAS) – no need to manually adjust after changing a tube
·         Automatic switch on of additional fan according to temperature
·         T/R System : QSK operation
·         REMOTE control - connector for LAN connection – remote control software free of charge
Mechanical parameters:                    19 in. x 18 in. x 8 in. (width x depth x height)
Weight:                                                  88 pounds 3 oz.  

OM-2501A user's manual, click here

See how to tune an OM-Power 2500, 3500, 4000, series click here

More on tuning the OM-Power 2500, 3500, 4000, click here

See how to establish transceiver CAT communications with the OM2501A 

See how the OM Power automatic amplifiers can automatically select filters and drive antenna switches 

See how the OM Power automatic amplifiers are manually tuned and the settings memorized for automatic band change and operation

Connections for automatic selection of antennas with a RatPak and OM2500A or OMxxxxA

LAN Connection

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: 192.168.1.222
Mask: 255.255.255.0
Gateway: 192.168.1.1

These are strictly 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 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 from the following address:
https://www.om-power.com/download/HF_PA_Manager_v3.29-setup.exe.

Click for OM2501A MANUAL 

PRICE INCLUDES SHIPPING TO YOUR DOOR