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General description of the OM2002W -
solid state amplifier for 144 MHz VHF band

The solid state power amplifier OM2002W is designed for 144 MHz amateur band from 144 MHz till 146 MHz and all modes. It is equipped with Freescale LDMOS transistors and is liquid cooled.

Specification of OM2002W:

Frequency coverage: VHF amateur bands (144 – 146) MHz
Power output: 1800 W CW, SSB and 1600 W AM, FM and digital modes,
50% duty cycle
Drive Power: 25 to 30 W
Input impedance: 50 ohm, VSWR < 1.1 : 1
Output amplification 19 dB
Maximum output SWR: 2:1
SWR protection: Automatic switching to STBY, when reflected power is 200 W or higher
Intermodulation distortion: -32 dBc
Suppression of harmonics: < -70 dBc
Transistor: 2x MRF1K8
Cooler: 2 pcs. axial blower
Power supply: 120 – 250 V AC , 50 – 60 Hz
Protection circuits: - SWR too high
- Drain current too high
- Input power too high (overdrive)
- Output power too high
- Reflected power too high
- Gain too low
- Combiner unbalance
- DC voltage too low
- Temperature too high
Display indications: 4.3" Touch Screen Display 480 x 272 pixels
Size: 383 mm x 180 mm x 365 mm [15.1” x 7.1” x 14.4”] (Width x height x depth)
Weight: 11.7 kg ( 25.8 lb )

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:

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 link: Remote control manager for OM2002W v2.12

NOTE: For the correct functioning of the software, it is necessary to have accessible LAN ports 9999 and 10001.