4000 W output automatic tuning HF amplifier. 160 m to 10 m. See the Optional Remote Control Unit for ON/OFF, Operate/Stdby, and that can be connected to WLAN for remote operation.

Uses two FU-728F Ceramic Tetrodes.

OM4000A Manual link.

The OM4000A linear amplifier is designed for all shortwave amateur bands from 1.8 to 29 MHz (including WARC – bands ) and all modes. It is equipped with two FU-728F ceramic tetrodes.

The advantages of the OM4000A:

Specifications of the OM4000A:

Frequency coverage:                          Amateur bands 1.8 – 29.7 MHz including WARC

Power output:                                      4000 W in SSB/CW on HF bands, 3000W on RTTY, FM

Drive power:                                        30 to 60 W for full output power

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      :                  ICOM, ELECRAFT, KENWOOD, TEN-TEC ORION,                                        

                                                              YEASU, Icom transceiver protocol using by microHAM

                                                              devices – CI-V OUTPUT, Flex Radios and Anan (Apache Labs)

Tube:                                                      Two FU-728F ceramic tetrode

Cooling:                                                 Centrifugal blower + axial blower

Electrical Requirements:                     Two 20A circuits with NEMA 6-15/20 receptacle

Power supply:                               Switchable 220V, 230V, 240V, 60 Hz 

Transformers:                                       Two 3.0 kVA toroidal transformers

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 is turned on

Features                               

·         support automatic external ANT switching

·         Memory for faults and warning, easy maintenance

·         Automatic set-up idle current (BIAS) – no need to manually adjust after changing the tube(s)

·         Automatic operation 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                                                    120 pounds