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General description of the OM2002+
solid state amplifier for 144 MHz VHF band

The solid state power amplifier OM2002+ is designed for 144 MHz amateur bands from 144 till 146 MHZ and all modes. It is equipped with Freescale transistor.

Specification of OM2002+:

Frequency coverage: VHF amateur bands 144 – 146 MHz
Power output: 1800W CW, 1600W SSB and 1600W AM, FM and digital modes,
50% duty cycle
Drive Power: 7 to 15W for full output power 1800W
Input impedance: 50 Ohm, VSWR < 1,3 : 1
Output impedance: 50 Ohm unbalanced
Output amplification 23 dB
Maximum output SWR: 1,9 : 1 for full output power 1800W
SWR protection: Automatic switching to STBY, when reflected power is 180W or higher
Intermodulation distortion: - 32 dBc
Suppression of harmonics: < -70 dBc
Transistor: 2x MRFE6VP61K25HR6
Cooler: 2pc axial fan (cooler) + 1 axial fan (power supply)
Power supply: 100 – 250V AC , 50 – 60 Hz
Power Supplies inside: 50V DC switching mode PS, 12V DC for logic and protection circuits
Protection circuits: - VSWR too high
- Drain current too high
- Input power too high
- Output power too high
- Reflected power too high
- Gain too low
- DC voltage too low
- Inside temperature too high
Display indications: 4.3" Touch Screen Display 480x272 pixels
Size: 318 mm x 144 mm x 362 mm [12.5” x 5.7” x 14.3”] (Width x height x depth)
Weight: 11.1 kg ( 24.4 lb )

LAN Connection

Remote unit 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 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 over LAN and monitoring special software is needed. It is available free of charge, it can be downloaded from the following address: