To give Harry some extra info.....
The JR Transmitters use cyrstals labelled at the Transmit frequency but oscillate at 1/4 the freq. The transmit module / board uses 2 stages of frequency doubling to give the final RF Frequency. JR kit uses a deviation of +/- 1.8KHz which is generated at the xtal fundamental.
The JR receiver ( unless a Dual Conversion ) uses an IF of 455KHz. The crystal oscillates 455KHz lower than the marked frequency. ( BTW the Xtal runs at 3rd Overtone ). This generates a mix signal of RF Frequency, Xtal Frequency, Xtal + RF Freq, and RF - Xtal Freq. This combined siganl is filtered to leave only a 455KHz IF.
Dual Conversions receivers have another IF of 10.7 MHz in addition to the 455 KHz IF.
For more info on the benefits of DC & SC, there is an interesting article here....
http://www.bergent.net/SC-DC.pdf