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Instruction Manual

OM3006

50 MHz POWER AMPLIFIER

OM POWER, s. r. o. 930 30 Báč 126

SLOVAKIA

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Содержание OM2006

Страница 1: ...Instruction Manual OM3006 50 MHz POWER AMPLIFIER OM POWER s r o 930 30 Báč 126 SLOVAKIA ...

Страница 2: ...ay that the rear power supplies are accessible The amplifier can be operated only if both supply cables are connected OM3006 reaches optimal parameters when it is connected to 2 phases Do not turn the amplifier on without having connected the antenna A hazardous HF voltage may built up on the antenna connector after turning the amplifier on with no antenna connected Before opening the upper lid of...

Страница 3: ...put 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 ...

Страница 4: ...adband input circuit with an input impedance of 50 Ohms This adaptable input circuitry ensures a good input SWR better than 1 5 1 on all short wave bands The output of the amplifier is a Pi L circuit The ceramic capacitor for TUNE and LOAD are divided This enables the amplifier to be tuned exactly and makes it possible to easily return to the previously set positions after band change Top view on ...

Страница 5: ... is stabilized by means of zener diodes SAFETY DEVICES Control and monitoring circuits ensure control and safety of the circuits of the device during malfunction of the PA They are placed on the Control board which is located on the subpanel Putting the power amplifier into operation Coaxial cable The output of the transceiver is to be connected with the input of the amplifier via RG58 or similar ...

Страница 6: ...th an EURO end Each cable is to be switched to another phase of your main supply system Both of them have to be able to deliver a power of 2 5 kVA If you use only one phase you have to connect both cables to this one phase Your main supply has to be able to deliver 3 5 kVA on this one phase In this case the power amplifier can t deliver full output ATTENTION In each case the power amplifier has to...

Страница 7: ...STBY if WAIT LED is on or the amplifier is off your transceiver is in bypass mode directly connected to antenna Maximum 400Watts RF OUTPUT Bar graph shows output power REFLECTED POWER Bar graph shows reflected power of the antenna 350W maximum or amplifier switches to STANDBY mode Ig2 bargraph measerus the currency of the second grid in the range from 20mA to 80mA HV IP TUNE bargraph measure the a...

Страница 8: ...step the blower of tube is switched on the multimeter bargraph measures the high voltage the normal value is 3 4 kV the WAIT LED lights up After switching on you have to check the functioning of the blower Air must be blown out of the ventilating apertures above the tube If there is any failure you have to press the OFF button immediately Heating the tube takes about 150 seconds After this time th...

Страница 9: ...ower of approximately 2000 W is reached 10 Repeat steps 6 and 7 11 Set TUNE to maximum output power After this procedure the amplifier is tuned correctly and ready to give 2000 W output power in all operation modes At optimal tuning and full output power a positive 50mA voltage goes through the second grid If less output is desired you can simply decrease the load of the transceiver Please note Sh...

Страница 10: ...amplifier back to OPR If the fault will repeat 3 times after each other the control circuits will turn the amplifier to STBY Brining the amplifier to OPR is enabled by using the OPR STBY switch After the reaction of safety circuits the FAULT LED will be lit up for approx 5 sec depending on the nature of the fault Flashing LED signalizes IP anode currency exceeded HV low anode voltage FAULT reflect...

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