Kenwood TAJFUN 1000 Instruction Manual Download Page 10

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Page 10 of 10

VH Electronics Slovakia

www.vhelectronics.sk

I.6 Sequencer

I.6.1

Time control coaxial relay

Control unit „Control Board“ switch input and output coaxial relays in the correct time
sequence according to the PTT signal. Time T1 and T2 can be changed using
the software Service Tajfun 1000 via USB port PA.

http://vhelectronics.sk/index.php/en/ham-radio-vhf-uhf/tajfun-1000-144-a-432-mhz-detail

Normally set times:
T1 (Relay IN) ...... 20ms
T2 (Relay OUT)... 25ms

ATTENTION !!! Carefully consider any change in these times not to cause
destruction LDMOS or accident PA.

Summary of Contents for TAJFUN 1000

Page 1: ...TAJFUN 1000 INSTRUCTION MANUAL www vhelectronics sk www kenwood sk ...

Page 2: ...robust LDMOS VHF Power Amplifier hereafter PA working in amateur 432MHz and 144MHz band with output power up to 500W I 2 Technical parameters Frequency Coverage 432 440 MHz Amateur band 142 146 MHz Amateur band Operating Mode FM SSB CW DIGI Output Power 500W CW 450W SSB lineary 300W FM and DIGI 21 C 50 duty cycle Low Pass Filter Only on 440 MHz Input Power 12 16W Inside 6dB hybrid attenuator LDMOS...

Page 3: ...er PWR o Reflected Power REF o Peak Power PEP o Temperature I 4 Put into operation If your device was transported or stored in a cool or cold environment it is necessary to unzip it first and let it dry in a warm enviroment by doing this you will protect your device against a possible water condensation Then you should connect the connecting coaxial cable to the RF INPUT and RF OUTPUT jacks on the...

Page 4: ...pendently of the control of the PTT Rx Tx mode Advantage quiet operation I 4 2 Mode Contest QSO This mode is suitable for the Contest eventually for DIGI operation with high demands on cooling of the PA After switching of the PTT Tx mode it switches the maximum speed of the cooling fans After switching off the PTT mode Rx the speed is continuously controlled PWM according to the temperature of the...

Page 5: ...Power REF both appears in a bargraph and their values are represented in a numerical form it shows the values of the Temperature Current and Voltage Mode Rx Mode Tx I 4 4 Bargraph It shows the performance of the Output Power PWR Reflected Power REF and the Temperature TEMP they are all shown in a bargraph and their values appear in numerical form I 4 5 Peak It displays values as Standard but PWR P...

Page 6: ...r U PWR and U REF mV for servicing I 5 Responding in excessing the parameters Alert Block Warning I 5 1 Output Power PWR Atlert when crossing PWR above the set value 500W it gets into a red bargraph the numeric value turns red and the buzzer beeps Block when crossing PWR above critical value 550W it declares Warning on the display and it blocks the LDMOS Inhibit 5V it turns the coax relay off and ...

Page 7: ...5V it turns the coax relay off and it blocks the PTT In order to restore operation it is necessary to Restart confirm Warning and return to the Display operation Alert I 5 3 Temperature Atlert when crossing the temperature above the set value 65 C it gets into a red bargraph the numeric value turns red and the buzzer beeps Block when crossing PWR above critical value 70 C it declares Warning on th...

Page 8: ...V it turns the coax relay off and it blocks the PTT In order to restore operation it is necessary to Restart confirm Warning and return to the Display operation Alert I 5 5 Drain Current Atlert when crossing Current above the set value 20A the numeric value appears red and the buzzer beeps Block when crossing Current above the critical value 22A it declares Warning on the display and it blocks the...

Page 9: ...________________________________________________________________________________ Page 9 of 10 VH Electronics Slovakia www vhelectronics sk DIAGRAM BLOCK ...

Page 10: ...tch input and output coaxial relays in the correct time sequence according to the PTT signal Time T1 and T2 can be changed using the software Service Tajfun 1000 via USB port PA http vhelectronics sk index php en ham radio vhf uhf tajfun 1000 144 a 432 mhz detail Normally set times T1 Relay IN 20ms T2 Relay OUT 25ms ATTENTION Carefully consider any change in these times not to cause destruction LD...

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