Neckstrap Attachment
Frequency Notes/Aircraft Only Frequencies
Base Loaded Antenna
G14
The XP9303 transmitter employs a plug-in module for 
the transmitter. Per FCC regulation, the transmitter crystal 
in the module should only be changed by a certified 
technician. Changing of the transmitter crystal by a non-
authorized technician could result in a violation of FCC 
rules.
The XP9303 can transmit in either Pulse Code Modulation 
(SPCM) or Pulse Position Modulation (PPM, commonly 
referred to as FM).
Be certain to observe the following guidelines:
An eyelet is provided on the face of the XP9303 
transmitter that allows you to connect a Neck Strap 
(JRPA023). This hook has been positioned so that your 
transmitter has the best possible balance when you use 
the neck strap.
An optional base-loaded antenna is available for use with 
the XP9303 transmitter. It is considerably shorter than 
the standard antenna. However, the base loaded antenna 
cannot be collapsed for storage inside the transmitter. You 
must also use an adapter (JRPA156) to attach the antenna 
to your XP9303. The Base Loaded Antenna (JRPA155) is 
made of a flexible coil and is covered with a soft plastic 
material. Your range will not be affected when using the 
base loaded antenna.
Do not operate your transmitter when another transmitter 
is using the same frequency, regardless of whether the 
second transmitter is PCM, PPM (FM) or AM. You can 
never operate two transmitters on the same frequency 
simultaneously without causing interference.
Aircraft-Only Frequencies
JR® Transmitters and receivers are available in 72MHz 
frequencies in the United States for use with model 
aircraft. Employing 72MHz frequencies does not 
require a special operator’s license from the Federal 
Communications Commission (FCC).
• A chart for all available frequencies is located on 
page I-3 of this manual.