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OM POWER OM4000 HF, Instruction Manual

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OM POWER OM4000 HF Instruction Manual Download Page 1

                     

                      

 

Instruction Manual 

 
 

 

 

 

OM4000 HF 

 

SHORTWAVE POWER AMPLIFIER 

 
 

WWW.OM-POWER.COM 

 

OM POWER, s.r.o.    93030 Báč 126,    SLOVAKIA 

Contact :    +421 905 321 410 

e-mail    :   [email protected] 

Summary of Contents for OM4000 HF

Page 1: ...Instruction Manual OM4000 HF SHORTWAVE POWER AMPLIFIER WWW OM POWER COM OM POWER s r o 93030 B 126 SLOVAKIA Contact 421 905 321 410 e mail om power om power com...

Page 2: ...CTIONS 5 3 GENERAL DESCRIPTION 6 3 1 HF part 6 3 2 Power Supply 7 3 3 Safety Devices 8 4 INSTALLATION 8 4 1 Grounding 8 4 2 Coaxial Cable 8 4 3 Control Cable 9 4 4 Mains Supply 10 4 5 Cooling 10 5 OPE...

Page 3: ...OM4000 HF POWER AMPLIFIER 3 7 APPENDIX 17 7 1 Block Diagram of OM4000 HF Power Amplifier 17...

Page 4: ...witching 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 A...

Page 5: ...man life Read next safety instructions carefully first before you will start to install and operate power amplifier NEVER VIOLATE NEXT RULES WARNING NEVER ALLOW CHILDREN to play around PA or to touch...

Page 6: ...led in such a way that the back of the amplifier remains accessible CAUTION The amplifier is an A category product In a household it can influence other electric appliances In such cases the user is r...

Page 7: ...rs A soft start is provided using relays and resistors The high anode voltage is made by combining 8 x 420 V total 3360V 2 5A Each has its own rectifier and filter In the high voltage circuit safety r...

Page 8: ...mplifier has to be grounded properly Connect the screw on the rear panel of the amplifier to your local grounding system with a copper cable use a cross section of 4 mm2 at least Connect your transcei...

Page 9: ...cold switching Modern transceivers they have a time delay between PTT switching and power output CAUTION If you are using and older transceiver or transmitters without time delay we recommend to conne...

Page 10: ...quately sized and connected grounding system is also very important 4 5 Cooling CAUTION The amplifier must be installed in such a way that free flow of hot air from the tube is allowed Do not obstruct...

Page 11: ...ecide to have a short operating break place the amplifier in the standby mode rather than switch it off 5 1 Operation Elements There is couple of operational elements accessible or visible on the fron...

Page 12: ...have to check if the right antenna or a 50 Ohms load resistance is connected at the antenna output CAUTION The operation of a mistuned PA will cause malfunctions the increase of grid current the GRID...

Page 13: ...time the WAIT LED goes out and the amplifier is ready for operation 4 Reduce the power output of your transceiver to the minimum 5 Switch OPR STBY to OPR position OPR LED lights up 6 Choose the TUNE p...

Page 14: ...wer RF POWER LED lights up maximum right After this procedure the amplifier is tuned correctly and ready to give 2500W output power in all operation modes At optimal tuning and full output power a pos...

Page 15: ...mode After abt 2 sec the control circuits will switch the amplifier back to OPR CAUTION If the fault will repeat 3 times after each other the control circuits will turn the amplifier to STBY Bringing...

Page 16: ...ube damaging contact the manufacturer or your dealer for ordering new one You will get instructuions how to change tube and how to preset proper parameters too Be very careful you will do it only on y...

Page 17: ...OM4000 HF POWER AMPLIFIER 1 7 7 APPENDIX 7 1 Block Diagram of OM4000 HF Power Amplifier...

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