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OM Power OM-2501HF - Heavy Duty Legal Limit HF Manual Tune Amplifier. 

GU84B Tube

See table below for MARS frequencies.

The linear amplifier OM2501HF is a manual tune designed for all short wave amateur bands from 1.8 till 29 MHz (including WARC) and all modes.

It is equipped with a one FU728F or GU84B ceramic tetrode 

The advantages of OM2501HF:

Specifications of the OM-2500HF:

Frequency Coverage Amateur Bands                                    1.8 – 29.7 MHz including WARC

Power Output                                                                            2500W in SSB and CW, 2000W in RTTY, AM and FM

Input Power Usually                                                                 30 to 60W for full Output Power

Input Impedance                                                                       50 Ohm, VSWR < 1.5 : 1

Power Gain                                                                                 15 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                                                                                           One FU728F OR GU84B Ceramic tetrode

Cooler                                                                                          Centrifugal blower + Axial blower

Power requirements                                                                   Two 20A circuits with NEMA 6-15/20 receptacle   

Power supply                                                                              2 x 240V – 60 Hz single phase

Transformers                                                                              Two 2 kVA toroidal transformer

PARAMETERS

Protection circuits:            

·         SWR too high

·         Anode current too high

·         Screen current too high

·         Mistuning of power amplifier

·         Temperature to high

·         Soft start for fuse protection

·         “switch –on blocking“ when amplifier turned on

Display:                                                 

·           4,3” color touch screen

Features                               

·         Memory for faults and warning, easy maintenance

·         Automatic set-up idle current (BIAS) – don’t need to manually adjust after changing a tube

·         Automatic switch on of additional fan according to temperature

·         T/R System : QSK operation

Mechanical

Dimensions                                          19 in. x 18 in. x 8 in. (width x depth x height)

Weight:                                                  88 pounds 3 oz. 

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

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

OM-2501HF User's Manual, click here

PRICE INCLUDES SHIPPING TO YOUR DOOR