General description of the OM2200HF amplifier
The linear amplifier OM2200HF is designed for all short wave amateur bands from 1.8 till 29 MHz (including WARC – bands ) and all modes . It is equipped with a ceramic tetrode FU-728F.
Specification of OM2200HF Frequency coverage: amateur bands 1.8 – 29.7 MHz including WARC Power output: 2200+ W in SSB and CW 2000 W in RTTY, AM and FM Driver Power: usually 40 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: 2:1 SWR protection:
Automatic switching to STBY, when reflected power is 350W or higher Intermodulation distortion: 32 dB below nominal output Suppression of harmonics: < -50 dBc Tube: FU728F Ceramic tetrode Cooler: Centrifugal blower + axial blower Power supply: 1 x 230 V - 50 Hz single phase Transformers: 1 pc of toroidal transformer 3.0 kVA Protection circuits: - SWR too high - Anode current too high - Screen current too high - Grid current too high - Mistuning of power amplifier - Soft start for protecting your fuses - “switch –on blocking “ at opened amplifier Bar graph indications: -
Power output – bar graph 50 LED - Reflected power – bar graph 20 LED - Current at screen ( Ig2 – bar graph 10 LED ) - Anode voltage, anode current, tuning – bar graph 30 LED LED indicators: - current at control grid ( Ig1 – 2 LED ) - WAIT – preheating of tube (180 sec ) - STBY– standby - OPR – operating condition - FAULT – failure, switching off for abt. 4 sec Parameters: 485 x 200 x 455mm (width x height x depth) Weight: 30 kg