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Acom ACOM1010, User Manual, Page: 2 / 21

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6-2. Functions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6-3. Storage and Shipment  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Summary of Contents for ACOM1010

Page 1: ...ion 5 2 2 Line Voltage Selection 6 2 3 Amplifier Location Selection 6 2 4 Connections 6 3 POWER ON CONTROLS AND INDICATORS 8 4 OPERATION 10 4 1 Turning ON and OFF 10 4 2 Changing Operate and Standby Modes 11 4 3 RTTY Mode 11 4 4 Antenna change 11 4 5 Tuning 12 5 MAINTENANCE 15 5 1 Cleaning 15 5 2 Fuse Replacement 15 5 3 Tube Replacement 16 5 4 Simplified Schematic Diagram 16 5 5 Service Functions ...

Page 2: ...6 2 Functions 18 6 3 Storage and Shipment 18 ...

Page 3: ... Fax 359 2 920 9656 telephone 359 2 920 9655 e mail acom mail orbitel bg standard mail ACOM Bul N Mushanov 151 1330 Sofia Bulgaria 1 3 Equipment Supplied The ACOM1010 amplifier and this manual are shipped in a cardboard carton 1 4 Features l Easy operation The plate load True Resistance Indicator TRI is an ACOM innovation that provides quick and precise tuning typically in less than 10 seconds The...

Page 4: ...accommodate any of 8 nominal line voltages between 100 and 240 V 50 or 60 Hz l Band inclusion The amplifier can be shipped with 10 and 12 meter capability disabled as required by the Federal Communications Commission FCC for United States users Contact your dealer about enabling those bands 1 5 Safety Considerations Explicit Definitions The ACOM1010 HF Linear Amplifier is a Safety Class I unit The...

Page 5: ...your amplifier yourself including any attempt to change hardware or firmware Doing so creates a potentially fatal shock hazard and may damage the amplifier or equipment connected to it ACOM is not responsible for any such personal injury or equipment damage whether caused by accident or as a result of good faith efforts at repair or adjustment CAUTION To avoid damage to the amplifier not covered b...

Page 6: ... will be necessary No device that is sensitive to magnetic fields including dynamic microphones should be located adjacent to the right side of the amplifier where the power transformer is mounted The amplifier should generally be placed to the right of your transceiver No temperature sensitive devices should be located above the air exhaust ports This means the amplifier should not be located und...

Page 7: ...able coaxial cable from the antenna to the appropriate amplifier output on the rear panel marked ANT1 or ANT2 using a PL 259 plug d Run a shielded cable from the ground on transmit socket or terminal on your transceiver to the amplifier rear panel KEY IN socket The KEY IN socket uses a standard RCA phono plug NOTES Your amplifier will not work if KEY IN is not connected properly Transceiver produc...

Page 8: ... The Power Switch on the front panel must be in the OFF position only then should you insert the amplifier s line mains plug into the appropriate wall outlet At this time the amplifier remains switched off 3 POWER ON CONTROLS AND INDICATORS CAUTION Do not turn the amplifier on for at least 2 hours after unpacking it and locating in its operating location Pay particular attention whenever the ampli...

Page 9: ...ate reflected power up to 240 W The scale resolution is 30 W The OPER button alternatively switches between the operate and standby modes once the amplifier has completed its 150 second warm up period See Section 4 2 The RTTY button reduces the output power of the amplifier to 500 W See Section 4 3 The button RTTY button reduces the output power of the amplifier to 500 W See Section 4 3 The button...

Page 10: ...wer and or refresh the tuning Section 4 5 for safe operation IP when illuminated a plate current overload condition exists reduce the drive power and or refresh the tuning Section 4 5 for safe operation F when illuminated the amplifier automatic protection has tripped If F is accompanied with one of the G1 G2 or IP condition indicators the cause of the protection trip will be evident When F alone ...

Page 11: ...R go to and remain in the STBY mode such as when you leave the station for a while The green LED STBY mode such as when you leave the station for a while The green LED STBY goes off and the Auto Operate function is suppressed temporarily Pressing the OPER button again OPER button again OPER restores the Auto Operate feature 4 3 RTTY Mode Select the RTTY mode to operate continuous duty modes such a...

Page 12: ...difference between them will be nearly zero OUTPUT POWER The amplifier can operate safely as long as the REFLECTED POWER is LESS THAN 250 W Matching REFLECTED POWER is LESS THAN 250 W Matching REFLECTED POWER is assured for loads presenting a VSWR of up to 3 1 Nevertheless for some loads and bands matching is possible at even higher VSWR levels but the drive power must be reduced to prevent the RE...

Page 13: ... maximum indication 3 Watch the TRI indicator above the LOAD left hand capacitor and turn the LOAD capacitor in the indicated direction to center the green LED indicator light 4 Increase the drive power to get the desired nominal output then repeat steps 2 and 3 always peaking output with the TUNE adjustment NOTE No light on the TRI indicator means that the tuning is too far off To correct this tu...

Page 14: ...pplied a The first degree of protection consists of an illuminated LED warning These include the yellow LED warnings discussed earlier i e G1 grid 1 G2 grid 2 and IP plate Operation may be continued but the amplifier is likely to proceed to the second degree of protection the trip b The second degree of protection is a trip to the standby mode The red F fault LED illuminates and the amplifier auto...

Page 15: ...be rated at 6 3 A If it is necessary to replace the line mains fuses use only those that are permitted under local safety codes The two primary line mains fuses in the amplifier are located on the rear panel Fig 2 1 They are of the fast quick blow type European size 5 x 20 mm Use 10 A for 100 120 V ac operation 6 3 A for 200 240 V ac operation Suitable types are For 120 V 10 A 250 V 5 x 20 mm fast...

Page 16: ...Ca and together with the RF WATTMETER is the main source of information for the control circuit of the amplifier in evaluating tuning quality The control circuit is based on the ATMEGA 8L micro controller from Atmel All voltages are delivered from the line mains and HV PCBs The currents of the control grid screen grid and the plate as well as the reflected power and tuning quality etc are continuo...

Page 17: ...ortion Better than 35 dB below rated output d Hum and noise Better than 40 dB below rated output e Harmonic Output Suppression Better than 50 dB below rated output f Input and Output Impedance Nominal value 50 Ohm unbalanced UHF SO 239 type connectors Input circuit broadband VSWR less than 1 3 1 1 8 30 MHz continuously no tuning no switching Bypass path VSWR less than 1 1 1 1 8 30 MHz continuously...

Page 18: ...h plate dissipation of 800 W grid driven forced air cooling 6 3 Storage and Shipment CAUTION Should it be necessary to ship the amplifier use the original packing as described below Switch off the amplifier pull the line mains plug out of the outlet disconnect all cables from the rear panel of the amplifier remove the ground connection the last and then pack the amplifier in its original carton a ...

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