User's Manual

Table Of Contents
TDFM-136B Operating Instructions 08RE399
The common parameters are identified as items 7 through 11 and are as follows:
7. Up to eight characters are available for a text description of the memory.
8. One character position is used to indicate the operating mode:
Analog modes: wide "w"(25kHz.), narrow "n" (12.5kHz.)
Digital mode: project 25 digital "D" (12.5kHz.).
9. Eight characters are used to indicate the frequency in use.
10. One character indicates either Receive or Transmit as: "R" or "T".
11. The final character indicates the current squelch mode:
Analog modes: noise squelch "x", CTCSS tones "t", or DCS codes "c"
Digital modes: monitor "m", NAC only "n", TalkGroup + NAC "g"
1.2 Transceiver Basic Operation
For basic operation of the transceiver the user has the yolk mounted PTT key and memory
up/down keys (if connected) in addition to the controls discussed previously. Basic
operation is discussed in this section.
1.2.1 Selecting the Active Channel – Main or Guard
When the user presses 'PTT', the unit will transmit with the parameters of the active channel and
memory, that the user has selected. The method of selecting MAIN or GUARD channel is
described below.
Figure 1-4. The active channel display and control points.
1. The MAIN channel data is shown on the top line of the display, MAIN supports 230
memory positions (001 to 230). The MAIN channel is made the active channel for
transmit and edit by the user placing the MN/GD switch in the MN position. For
selecting the active memory for the MAIN channel, see the following section.
2. When the MN/GD switch is in the GD position then the GUARD channel is active. The
GUARD channel has two fixed memories: GD1 and GD2, the GUARD memory used is
determined by the position of the G1/G2 switch.
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