Kenwood TAJFUN 1000 Bedienungsanleitung

TAJFUN 1000

INSTRUCTION MANUAL

www.vhelectronics.sk

www.kenwood.sk

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Acknowledgment

Thank you for purchasing Power linear amplifier TAJFUN 1000 432/144 from VH Electronics. During

its productiom, we used the latest knowledge in the field of VHF Power amplifiers and the most

advanced technology in the management, communication and display systems. We believe that our

product will exceed your expectations and will be working properly to your satisfaction. Please take a

few moments to read this manual and get acquainted with this device.

I. GENERAL INFORMATION

I.1 Description

TAJFUN 1000 432/144 is a small, lightweight but 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 MRFE6VP5600H Freescale

PUSH PULL Configuration

Class Operating AB

Input / Output Impedance 50 Ω Connector 2 x N-female

Suppression of harmonics ≤75 dBc 432MHz (Low Pass Filter); ≤10 dBc 144MHz

Intermodulation distortion -32 dBc

Cooling 2 axial fans PA + 1 fan Power Supply

Coaxial Relay CX600NC –CX140D

Communication ports USB, LAN

Power Supply Inside Input: 195 - 277VAC, 45 - 66Hz

Output: 53VDC / 1000W

Working temperature 0 - 45°C, Max. Humidity 90%

Dimension 266 x 105 x 294mm ( width x height x depth )

Weight 6,2kg

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I.3 Protection, measurements and display

Protection PWR, REF, Temperature, Imax, Umax/Umin

Control / Display Colour TFT display

Measurements and display:

oDrain Current

oDC Voltage

oOutput Power PWR

oReflected Power REF

oPeak Power PEP

oTemperature

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 rear panel (N-female connector) and attach the PTT RCA

(CINCH) connector. Broadcasting (Tx) is active when connected to GND.

Back panel

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Insert a supplied power cord into the POWER. Then turn on the power switch. Initializing and

control equipment starts. After a short time, the fans will start, initialize the TFT touch screen

and display: Basic menu - “Home QSO“ , “Contest QSO“

By pressing an icon on the screen we select:

I.4.1 Mode Home QSO

This mode is suitable for the standard operation of the Home for the occasional QSO with less

demand for cooling of the PA. Speed cooling fans are continuously controlled (PWM) according

to the temperature of the LDMOS transistor independently 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 LDMOS transistor. Advantage - powerful cooling for

demanding operations.

After selecting the operating mode we will get to the menu for Display operation.

In this menu, the PA does not respond to control PTT. Coaxial relays RF INPUT linking

directly to the RF OUTPUT connector (bypass the amlifier). This mode ideal for local

QSOs at low power wihout having to disconnect the PA.

By moving the middle icon you are setting up the band which you currently use, 144 MHz or 432

MHz.

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By pressing on the Icon, you can choose from the following views:

oStandard

oBargraph

oPeak

oAll values

I.4.3 Standard

It shows the performance of the Output Power - PWR, Reflected 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 PEP and REF PEP are displayed in the peek

values and the maximum values are represented during the hold of the PTT (Tx mode)

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I.4.6 All values

It displays values as Standard. PWR PEP and REF PEP are displayed in the peak value

and the maximum value are represented during the hold of the PTT (Tx mode) + it shows

the values of the Coupler 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 it blocks the

PTT.

In order to restore operation it is necessary to “Restart“ –confirm “Warning“ and return to

the Display operation

Alert Block - Warning

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I.5.2 Reflected Power REF

Atlert - when crossing PWR above the set value (≥50W) it gets into a red bargraph, the

numeric value turns red and the buzzer beeps

Block - when crossing REF above critical value (≥55W) it declares "Warning" on the

display and it blocks the LDMOS (Inhibit -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 the

display and it blocks the LDMOS (Inhibit -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

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I.5.4 DC Voltage

Atlert - when crossing DC Voltage above the set value (≥54V) the numeric value turns red

and the buzzer beeps

Block - when crossing DC Voltage above critical value (≥55V ) it declares "Warning" on

the display and it blocks the LDMOS (Inhibit -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.5.5 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 LDMOS (Inhibit -5V), it turns the coax relay off and it blocks

the PTT.

In order to restore the operation it is necessary to “Restart“ –confirm “Warning“ and

return to the Display operation

Alert

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DIAGRAM BLOCK

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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.

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