CESSNA AIRCRAFT COMPANY FOR TRAINING USE ONLY
MODEL 152 9-15
SUPPLEMENT
CESSNA 300 NAV/COM (720-Channel – Type RT-328T)
SECTION 1 – GENERAL
The Cessna 300 Nav/Com (Type RT-328T), shown in Figure 1, consists of a panel-mounted receiver-
transmitter and a single- or dual-pointer remote course deviation indicator (CDI). The set includes a
720-channel VHF communication receiver-transmitter and a 200-channel VHF navigation receiver, both
of which may be operated simultaneously.
The communication receiver-transmitter receives and transmits signals between 118.000 and 135.975
MHz in 25-kHz steps. The navigation receiver receives and interprets VHF omnidirectional and localizer
signals between 108.00 and 117.95 MHz in 50-kHz steps. The communication receiver-transmitter and
the navigation receiver are synthesizer-controlled and are tuned automatically when the frequency is
selected.
A DME receiver-transmitter or a glide slope receiver, or both, may be interconnected with the Cessna
300 Nav/Com set for automatic selection of the association DME or GS frequency. When a VOR
frequency is selected on the Nav/Com, the associated VORTAC or VOR-DME station frequency will also
be selected automatically; likewise, if a localizer frequency is selected, the associated glide slope
frequency will be selected automatically.
All controls of the Cessna 300 Nav/Com, except the omni bearing selector knob (OBS), which is located
on the course indicator, are mounted on the front panel of the receiver-transmitter. The course
indicator includes either a single pointer and related OFF flag for VOR/LOC indication only, or dual
pointers and related OFF flags for both VOR/LOC and glide slope indications. The course indicator also
incorporates a back-course lamp (BC) which lights when optional back-course operation is selected.
Each control function is described in Figure 1, and the audio control panel supplied with this equipment
is shown and described in Section 7 of this handbook.
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