Type SA-1 Searchlight Signal

Type SA-1 Dwarf Signals use one or two mechanisms. Optional equipment includes roundel and phankill assemblies, wire entrance couplings, conduit and adjustable lamp resistors.

High Signals consist of two major assemblies: signal heads complete with either an operative or inoperative mechanism, and mast assemblies complete with pinnacle, base, ladder, ladder foundation and platform.

All Type SA-1 Searchlight Signals are available with either a compound or stepped lens. The compound lens produces a longer-range light beam without the need for additional power. Outer roundels are available to spread or deflect the light beam for installations where the track curves. A phankill can also be supplied to minimize light beam dilution and prevent phantom signals caused by sunlight. Type SA-1 Mast-Mounted

The signal housing includes an 8.375" (21.3 cm) diameter lens, hood, ventilators, background, mounting bracket, base, or mounting socket. The unit's operating mechanism slides easily into place using a hanger and track system. Cams and locking pins ensure the mechanism remains in a secure, locked position.

The Type SA-1 Signal projects three aspects through a single optical system: red, yellow and green. This system supplies a powerful light beam using minimal energy. The signal has been designed to be fail-safe; if power is interrupted, it automatically displays the most restrictive aspect.

The Type SA-1 Signal consists of a compact operating mechanism and a durable cast aluminum housing. The housing may be bracket mounted to the side or front of the signal mast, provided with a socket for mounting to the top of the mast or provided with a base mounting for a concrete foundation.

Aspect-checking contacts directly operated by
counterweights
Slanted color discs minimize beam dilution
Choice of compound or stepped lens system
Available with 20-degree deflecting roundel or 30-degree Spredlite roundel
Wide choice of assemblies and wire entrance couplings
Precision filament lamp needs no refocusing when changing
Built-in sighting fixture
Built-in surge arrestor
Plug-in, cartridge-type, adjustable lamp resistor
Optional phankill unit reduces beam dilution
The Type SA-1 Searchlight Signal features an efficient electromagnetic structure, maximum back contact pressure, positive contact closure and precise colordisc positioning. This signal operates from battery or rectified AC-energy (8-12VDC).