WiMo GS 35 Operating Manual And Parts List

CHALLENGER II

HF LINEAR AMPLIFIER

(GS 35 Model)

Operating Manual

WiMo Antennen und Elektronik GmbH

Am Gäxwald 14, D-76863 Herxheim Tel. [phone] FAX 6978

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

INDEX

1. Specifications

2. Introduction

3. Installation

4. Operating controls

5. Operation

6. Circuit diagrams

CAUTION

There are dangerously high voltages inside the amplifier when the power is
switched on. DO NOT remove the covers unless the power has been
disconnected and sufficient time has elapsed for the capacitors to discharge.

NOTE

The Challenger is capable of a greater power output than the CW rating shown in 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 more than 130W continuous wave drive. Also care should be taken
not to exceed 1.5 : 1 SWR.

WiMo Antennen und Elektronik GmbH

Am Gäxwald 14, D-76863 Herxheim Tel. [phone] FAX 6978

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

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1. SPECIFICATIONS

Function…………….The Challenger is a desk top linear RF amplifier with a nominal

output of 1500W covering the HF Amateur bands.

Type of Emission…………..…………………………………………SSB/CW/RTTY

Output power…………………………1500W SSB or CW, 1000W continuous RTTY

Gain……………………………………………………………………...13dB nominal

Power requirements………………………………..…..230VAC at 20Amps, 50/60Hz

Duty cycle………………………………………Full O/P with normal 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, soft start
and timer at switch-on

Dimensions…………………………………….….16in wide x 9.5in high x 17in deep
410mm x 240mm x 475mm

Weight……………………………………………………………………………..29kg