Motorola HF-SSB MICOM-500E-A G761AA Owner'S Manual Download | Manualshive

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6886858J01-A

HF-SSB MICOM-500E Model G761AA / G762AA

This manual is an appendix to the Micom 2E-

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HF-SSB

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Summary of Contents for HF-SSB MICOM-500E-A G761AA

Page 1: ...OM 500E Model G761AA G762AA This manual is an appendix to the Micom 2E T r u n k O w n e r s Ma n u a l 6 8 0 2 9 5 2 C 6 0 HF SSB MICOM 500E A American Communication Systems Discover the Power of Communications TO ORDER VISIT http www ameradio com ...

Page 2: ...ons 2 Block diagram 3 Controls and indicators 4 General principles of operation 5 500W HF Linear Amplifier Unit 6 DC Power Supply 7 Junction Box 7 Performance Specifications 8 500W Transceiver Model Complements 11 Trouble Shooting 11 Radio Tuning Procedure 12 ALE 12 ...

Page 3: ...itter amplifier is microprocessor controlled doing the following functions Adjust amplifier input sensitivity Monitor heat VSWR and under voltage conditions Setting the power output via the channel power setting Max High Medium and Low GENERAL SPECIFICATION Power Output 1 6 30MHz 500W PEP and average Band Switching Fully Automatic Input Voltage 220VAC 10A 110VAC 20A Cooling Cooling fans T R Switch...

Page 4: ...SSB Micom 500E A 3 RF OUT J BOX POWER SUPPLY RADIO 13 8v 28v AMP FAN 110 220 AC SW ON OFF CONTROL HEAD RF OUT RF IN SENS MICOM 500W BLOCK DIAGRAM NOTE ALL THE WIRES AND CABLES CAT No 01MB000027 TO ANTENNA ...

Page 5: ...mplifier module has the following controls and indicators Indicator VOLT shows when power supply voltage is out of limits In OVER input overload indicator Input power is out of limits TEMP amplifier overheat indicator VSWR load circuit failure indicator FAILURE fatal failure indicator further amplifier operation is impossible TX transmission mode indicator BYPASS bypass mode indicator The amplifie...

Page 6: ...overloading By measuring the input signal frequency the controller selects and switches on appropriate harmonic filter Control system also provides the control of the amplifier sink temperature Depending of its level the forced air cooling system shall be switched on or output power level shall be reduced if necessary and if the temperature limit is exceeded the amplifier shall be switched to BYPA...

Page 7: ...rns off line To reset the transceiver power down the amplifier and restart the voltage condition less than 28 3 VDC When this condition exists the unit VSWR when a sampled VSWR exceeded 4 1 and the power reflected back to the amplifier is higher than acceptable the amplifier turns off line To reset the transceiver power down the amplifier and restart the unit Temp protection against over temperatu...

Page 8: ...y output on and off Note that when the dc output power supply is on OFF mode the internal power supply fans still work 4 Junction Box The junction box enables the connection of up to four external devices simultaneously in addition to headphone to the accessory port of the MICOM 2 e g modem phone patch Potentiometers adjust Potentiometers are used to adjust the received audio levels one of each co...

Page 9: ...tability 0 6 PPM 10 to 60 C Frequency Drift Aging 1 PPM year Synthesizer Lock Time 10 msec Max Frequency Resolution 10 Hz Operating Temp Range 10 to 60 C Storage Temp Range 30 to 70 C Humidity 95 50 C Remote Control Interface RS232C Optional Modes of Operation J3E SSB R3E PILOT H3E AME J2A CW J2B RTTY ARQ FEC PACKET MCW B8C FAX DATA FSK Dimensions mm inch Height 10 43 265 mm inch Width 16 61 422 D...

Page 10: ... 2 Power Mic Sensitivity 15 to 125mV RMS 600 Ohms Hum Ripple 50 dB Inband Noise 60 dB 30 Hz BW TX RX Switching Time 10 msec Tx Tuning Adjustments3 None RECEIVER Sensitivity SINAD SSB 0 5 V for 10 dB SINAD 0 35 V Typical Note 1 0 1 1 6 MHz with reduced performance 1 2 Rated Power Sensitivity 1 V for 2 5W audio at speaker Selectivity2 6 dB 350 to 2700 Hz 60 dB 1 kHz 4 kHz Image Rejection 80 dB IF Re...

Page 11: ...ange in output level RGC Time Constants Voice Data Attack time 10 msec Release time 1500 msec Attack time 10 msec Release time 10 msec Squelch Constant SINAD digital Clarifier Range 200 Hz Receiver Tuning Adjustments None Maximum Antenna Input 20 kV transient 100V RMS for 2 minutes CONTROLS Standard and optional volume on off scroll squelch scan USB LSB call monitor priority func and accessory pro...

Page 12: ...is in SSB mode only 3 Refer to the User Troubleshooting Chart 4 Follow the troubleshooting procedures in this section which provide instructions for isolating faulty boards Troubleshooting a board at component level should be performed according to the notes on the relevant schematic diagram FAULT ADVICE VOLT trip off line Ensure power supply maintains voltage greater than 11 0VDC under load Check...

Page 13: ...adios Through the combined use of channel scanning selective calling and Link Quality Analysis ALE automatically selects the best available communications link It is no longer necessary for an operator to be familiar with the varying factors which affect high frequency HF propagation between two points Each ALE equipped Micom 2 ALE family radio stores a matrix of Link Quality Analysis LQA scores f...

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