The FCC has allocated certain bands of frequencies for Radio Control use by hobbyists. A band is a group of frequencies. Each frequency within each band is assigned a channel number for simplicity.

27 Mhz band for toys and general use- Not recommended for sailboats.

75 Mhz band for surface vehicles (boats and model cars) using channels 61-90. The Victoria, Seawind and the One Meter class boats in our club use two servos. One for rudder control and the second for the sail control.

Modulation types: AM is the least costly way to go, but is more susceptible to interference than FM. Costs for an AM Transmitter, receiver and two servos is $40 and higher. FM is less susceptible to interference - Cost with transmitter, receiver and two servos is $85 and higher.

Spread Spectrum (Spektrum) 2.4 Ghz band . Best way to go but highest in cost.

80 channels are available but it actually uses two channels for higher reliability. Channels are selected automatically by the transmitter and receiver when you power on by searching within the 2.4 Ghz band for any open channels and locks on for your exclusive use. Cost is $200 and higher for transmitter, receiver and servos. The units have short transmitter and receiver antennas. See Model Yachting magazine issue number 142, page 19 for more details.

Synthesized Module 2.4 Ghz band. Similar to Spektrum but with a plug-in module. This mode uses only one channel vs. two for the Spread Spectrum mode. Plug-in modules allow users with certain higher priced aircraft/helicopter transmitters that accept plug-in transmitter modules to change bands and frequencies by a dial located on the module. Higher cost for transmitter ($200 and higher) and a plug-in module ($180). Also uses short transmitter and receiver antennas

NOTE: Transmitters are sold with either a stick control (preferred) or a pistol grip. Pistol grip transmitters are not recommended due to the spring loaded sail trigger having to be held in position. You will have finger fatigue very quickly. If using a CF (Carbon Fiber) hull, the antenna must extend outside of the hull because CF will attenuate the signal. Always range check radio equipment before sailing.

The fleet is now about 50% Spread Spectrum and with the resistor modification they are extremely reliable over hours of racing. The cost of spread specrum techonology seems to be paying off to serious sailors.