The Ranger uses four vertically-mounted 811A or 572B valves to produce up to 800W on the Amateur HF bands. As with all our models,the Ranger has a toroidal transformer providing the power into a voltage doubler board. The voltage doubler is used in preference to a bridge rectifier as it keeps the AC volts down.
Each band has its own tuned I/P and the O/P Pi network has a nine-position bandswitch for better tuning. To aid tuning even further there are 6:1 reduction drives on the tune and load capacitors. These capacitors are a double module exclusive to Linear Amp UK Ltd.
The valves are cooled by a 120mm, low noise Papst fan which gives excellent cooling but is so quiet you will hardly know it is running. Front panel features include two back-lit, flush-mounted meters which show plate current and grid current. The grid current meter also doubles as a relative RF power O/P meter,
selectable on the front panel. Fully adjustable ALC is also controlled from the front panel.
Specifications
Output power - 800W CW maximum or SSB, 400W RTTY
Gain - 10dB nominal
Power requirements - 230V AC at 8 Amps, 50/60 Hz
Frequency coverage - All amateur bands 1.8 - 29.7 MHz
Valves - 4 x 811A, vertically mounted
Cooling - Papst 120mm axial fan
DC voltage - 1700V DC
Protection - Primary AC fuses, soft-start ALC Front panel adjustable control
Dimensions - 14in wide x 9.5in high x 16in deep 355mm x 240mm x 405mm
Weight - 23kg
