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The OM Power model OM4001A is an automatic power amplifier, designed for use on all short wave amateur bands from 1.8 to 29.7 MHz (including WARC bands) and all modes.
It is equipped with a two pieces of ceramic tetrode FU728F.
The advantages of OM4001A:
Specification of OM4001A:
|Frequency coverage:||Amateur Bands 1.8 – 29.7 MHz including WARC|
|Power output:||4000+ W in SSB and CW on HF bands,
3000W in RTTY and DIGI modes
|Input Power:||Usually 40 to 60W for full Output Power|
|Input Impedance:||50 Ohm, VSWR < 1.5 : 1|
|Power Gain:||17 dB|
|Output Impedance:||50 Ohm unbalanced|
|Maximum Output SWR:||3:1|
|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:||2x FU728F Ceramic tetrode|
|Cooler:||Centrifugal blower + Axial blower|
|Response speed of AUTO tune:||less than 0,5s within same BAND, less than 2s if out of BAND|
|Power supply:||switchable 2 x 220/230/240V – 50 Hz one or two phases|
|Transformers:||2 pcs of toroidal transformer 3kVA|
|Dimensions:||485 x 200 x 455mm (width x height x depth)|
|Protection circuits:||- VSWR too high|
|- Anode current too high|
|- Anode voltage error|
|- Screen current too high|
|- Screen voltage error|
|- Grid current too high|
|- Grid voltage error|
|- Heating voltage error|
|- Mistuning of PA|
|- Temperature too high|
|- Soft start for protecting your fuses|
|- “switch-on blocking “ at opened amplifier|
|Indications:||4.3" colour touch screen display|
|Features:||High level of protection|
|Memory for faults and warnings, easy maintenance|
|Automatic set-up anode current (BIAS) – no need to adjust manually after changing the tubes|
|Three programmable working modes of the axial blower|
|Full QSK with silent relay|
|Many operational parameters to display|
|The smallest and lightest 4000 W Power Amplifier on the market|
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
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