General description of the OM3006 50 MHz Amplifier
The linear amplifier OM3006 is designed for 50 MHz amateur bands from 50 till 52 MHz
and all modes . It is equipped with a ceramic tetrode GU78b.
Specification of OM3006 :
Frequency coverage: amateur bands 50 – 52 MHz
Power output: 3000 W in SSB and CW , RTTY, AM and FM
Drive Power: usualy 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: GU78b Ceramic tetrode
Cooler : Centrifugal blower + axial blower
Power supply : 2 x 230 V - 50 Hz one or two phases
Transformers: 2 pcs of toroidal transformer 2,5 kVA
Protection circuits: - SWR too high
- Anode current too high
- screen current too high
- grid current too high
- Mistuning of power amplifier
- Hot switching protection
- Soft start for protecting your fuses
- “switch –on blocking “ at opened amplifier
Bar graph indications: - Power output – bargraph 50 LED
- reflected power – bargraph 20 LED
- screen current ( Ig2 – bar graph 10 LED )
- anode voltage, anode current, tuning – bargraph 30 LED
LED indicators : grid current ( Igl – 2 LED )
WAIT – preheating of tube (180 sec )
STBY - standby
OPR – operating condition
FAULT – failure , switching off for abt. 2 sec
Parameters: 485 x 200 x 455mm (width x height x depth)
Weight: 32 kg
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