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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.

OM4001A Manual link.

The OM4001A linear amplifier is designed for all short wave 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 OM4001A:

Specifications of the OM4001A:

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 OUPUT, Flex Radios and Anan (Apache Labs)

Tube:                                                      Two FU-728F ceramic tetrode

Cooling:                                                 Centrifugal blower + axial blower

Electrical Requriments:                     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

Display:                                                 

·         4,3” color touch screen

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

·         REMOTE control - connector for LAN connection – remote control software

 free of charge

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 username 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/HF4_PA_Manager_v3.28-setup.exe.

Mechanical

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