Five proportional radio-control channels and two non-proportional channels shoe-horned on a circuit board measuring 4.8" x 1.3".
All channels use the standard 1mS ~ 2mS PPM mode, adjustable with five standard 5K pots and two SPST on/off switches.
On-board trimpots are included, there to make alignment simple for all 7 channels.

The decoder is designed around the Johnson '4017 decade counter chip. In theory it can handle up to nine proportional channels. In reality 9 channels would need a much larger circuit board. Fortunately, a nice 7-channel decoder compatible with the above encoder can be made to fit snugly on a board measuring just 2.5" x 1.5"

An R/C switcher capable of switching currents of approx. 25 amps. An on-board LED gives a handy on/off indication. Ideal for controlling lamps, motors, LEDs, glow-plugs, etc, from any channel of your R/C transmitter. This unit will not work with 2.4GHz sets.

Similar to the above switcher, works with all R/C sets including 2.4GHz.

A 3-way distribution panel for model boats. This unit incorporates 1 x fixed output @ 38 volts max. (ESC), 1 x fixed output @ 5 volts (Aux1) and one variable output @ 1.2v to 38 volts (Aux2). All-round fuse protection is included, along with visual (LED) indication of any blown fuse.

Built to specification, this one is based on the same design but differs in that it has just 1 x fixed output but now with 2 x variable outputs. The layout is also slighty different, employing swanky PCB-mount barrel-type fuse holders.

A simple channel extender. The idea being that a non-proportional R/C channel (usually the landing gear channel) is used to toggle a singe proportional channel between two separate outputs. One nice selling feature is the fast and clean switching between the two outputs... no unwanted servo jitter in this town.

Similar to the above but this version will toggle up to two separate R/C channels. The selected channels are fully proportional while the unselected channels are fed a constant 1.5mS centre-position pulse.

Based on the ubiquitous NE555 timer chip, this simple circuit was designed primarily to control the speed of a radar drive motor. Pulse control modulation means more torque on the motor at lower speeds. Can also be used for dimming lamps, etc. FET output can handle loads up to 25 amps. Works from 3 volts up to 18 volts max.

Dual outputs: one normal rotation; one reverse rotation. Both outputs operate from one channel on the transmitter (usually the aileron channel), where both servos need to operate in the reverse direction from each other.
A simple in-line gadget which draws its power from the receiver, built around a CD4001 quad NOR gate, shoe-horned on a board measuring 1" x 1.4".