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WiMo challenger II GS 35, Operating Manual And Parts List

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CHALLENGER II

HF LINEAR AMPLIFIER

(GS 35 Model)

Operating Manual

WiMo Antennen und Elektronik GmbH

Am Gäxwald 14,  D-76863 Herxheim  Tel. (07276) 96680   FAX 6978

http://www.wimo.com                     e-mail: [email protected]

Summary of Contents for challenger II GS 35

Page 1: ...CHALLENGER II HF LINEAR AMPLIFIER GS 35 Model Operating Manual WiMo Antennen und Elektronik GmbH Am Gäxwald 14 D 76863 Herxheim Tel 07276 96680 FAX 6978 http www wimo com e mail info wimo com ...

Page 2: ...the specifications In order to achieve the stated PEP output the amplifier must be capable of operating CW at the same level for short periods Do not try to operate the amplifier at greater than the recommended level If the amplifier is operated for long periods at levels greater than the recommended ones then damage may occur Care should be taken not to exceed 400mA grid current or to drive with ...

Page 3: ...l amateur service Cooling Forced air cooling Frequency coverage All amateur bands 1 8 29 7 MHz incl WARC Input impedence 50 ohms VSWR 1 5 1 Valves Single GS 35 ceramic triode Harmonics 50dB typical Intermodulation more than 35dB at 1kW O P DC Voltage 3600 VDC Metering Plate current switchable Grid current RF relative O P ALC Front panel adjustable ALC Protection Primary AC fuses grid current trip ...

Page 4: ...tinuous indication of Plate current and a switch selected choice of Grid current or relative RF output The latter should normally reside in the Grid current position as it is most important to monitor the grid current at all times A nine position switch one for each band 10 12 15 17 20 30 40 80 and 160m selects band coverage The Tune and Load controls are attached to the capacitor using 6 1 epicyc...

Page 5: ...and the amplifier to correctly measure the input d NEVER attempt to operate the amplifier without first connecting an antenna or 50ohm dummy load Check the SWR of the antenna with the amplifier in the OFF or STBY position and do not operate the amplifier if the SWR is greater than 2 1 e Check that the front panel switches are in the STBY and OFF positions CONNECTIONS a POWER CABLE The amplifier is...

Page 6: ...When the above switch is at RF Out this control adjusts the sensitivity of the meter 7 ALC When turned anti clockwise until it clicks the ALC is off and the amplifier power is determined by the transceiver power control which should not exceed 130W Click and turn clockwise to set required output this will adjust the drive power from your transceiver automatically 8 BAND SWITCH Selects the desired ...

Page 7: ...plifier ceases to operate until the cause has been rectified and the amplifier re set To reset the amplifier make sure the Tune and Load controls are in the correct positions and the drive turned down a little Now press the STBY TX switch to STBY and immediately back to TX the Trip LED should now have gone out and the amplifier is able to be keyed once more REAR PANEL 1 FUSE HOLDER 1 25 30mm 15 Am...

Page 8: ...ifier is keyed TUNE UP Now set your transceiver to 50 Watts output in either CW or FSK key the amplifier and using the Tune control adjust for maximum output on the desired frequency The Load control setting as per the chart is an optimum position for the amplifier running 1300W into a 50 ohm load If a power of less than 1kW is required the Load control can be adjusted clockwise to a setting where...

Page 9: ... supply and allow the capacitors to discharge fully Never operate the amplifier into a load or antenna with an SWR greater than 2 1 Always tune the amplifier for resonance using low drive at the operating frequency The components in the amplifier are designed to be used within the parameters of the specifications on page 2 Excessive drive giving output in excess of these specifica tions will short...

Page 10: ...ct Carefully read the operating manual This warranty does not apply to any defect Linear Amp UK Ltd determines is caused by 1 improper maintenance or repair including the installation of parts or accessories tat do not conform to the quality and specification of the original parts 2 misuse abuse neglect or improper installation 3 accidental or intentional damage 4 acts of God Linear Amp UK Ltd is ...

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