OM POWER OM2500 A, Instruction Manual

Page: 3 / 29

General description of the OM2500A Amplifier
The linear amplifier OM2500A 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
GU84b. The OM2500A is automatically tuned to operating frequency of your TRX
.
Specification of OM2500 A
Frequency coverage: amateur bands 1.8 – 29.7 MHz including WARC
Power output: 2500 W in SSB and CW 2000 W in RTTY, AM and FM
Drive Power: usually 60 to 80 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
Tuning
manual or AUTO
Response speed of AUTO less than 0,5s within same BAND
Less than 3s if out of BAND
Supported TRXs-CAT ICOM, ELECRAFT, KENWOOD, TEN-TEC ORION,
YEASU and Icom transceive protocol using by microHAM
devices – CI-V OUPUT
Tube: GU84b Ceramic tetrode
Cooler:
Centrifugal axial blower
Power supply: 2 x 230 V - 50 Hz one or two phases
Transformers: 2 pcs of toroidal transformer 2,0 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 – bar graph 50 LED
-
reflected power – bar graph 20 LED
-
screen current ( Ig2 – bar graph 10 LED )
-
anode voltage, anode current, tuning – bar graph 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
OSD Indication LCD display 2x16 Characters
Parameters: 485 x 200 x 455mm (width x height x depth)
Weight:
40 kg