75mhz RC submarine Synthesized radio system with two receivers,  Comes with a Futaba 9C transmitter with a 75mhz Synthesized module, a 5 channel Synthesized 75mhz receiver, a 8 channel receiver with an RX crystal on channel 61, transmitter manual, new transmitter battery and carrying case.  These 75mhz sets are rare and are very hard to get.  For those of you who want to use the legal RC submarine radio frequency of 75mhz this is what you need.   I have been selling these 75mhz systems to RC sub guys for years and I am a sub guy myself. so I know what they need.  With this system you will be able to control your RC submarine in a Lake or in a pool with no problems.