2-5
2.5
PRIORITY AND SELECTIVE MEMORY CHANNEL SCANNING
The priority memory channel is always memory position number 1. The priority memory
channel is scanned every other step (ie. 121314151...) to ensure that no incoming messages
are missed. The priority channel can be locked out, which will result in the normal scanning
of the other memory positions.
Selective memory scanning allows the user to select which of the 100 memory channels are
to be scanned or locked out when the scan function is invoked. To use this feature, follow
the PROGRAMMING INSTRUCTIONS found in paragraph 2.3. Once the screen displays
SCAN
or
LOCKOUT
, use the
M.UP
or
M.DN
keys to toggle to the desired condition and press
ENTER
.
In normal operating mode the display of the TFM-138 will later show a "+" beside the memory
channel number if scan is enabled.
2.6
DIRECT FREQUENCY ENTRY MODE
This mode is designed to facilitate quick frequency selection during emergency and other
operational conditions requiring direct operating frequency selection. This operating mode is
disabled along with the programming mode when the internal disable jumper is set.
1.
When the transceiver is in the normal operating mode, press
FUNC
and the desired
operating frequency ie/ 153.275.
Please note in the above operation, after
FUNC
and "
1
" are entered, the LED display will
show memory channel "000" and then the remaining digits in the desired frequency are shown
as they are entered. No alphanumeric message can be entered in this mode. Operation on the
new frequency occurs in both transmit and receive (simplex only) modes. If RX or TX CTCSS
tones are required they must be programmed on.
2.7
RECEIVE FREQUENCY SIMPLEX FUNCTION
The receive frequency simplex function allows you to quickly change the transmit frequency,
when operating on a split pair (repeater/semi-duplex mode), to the receive frequency to allow
direct communications. ie/ If you are transmitting on 152.000 MHz and receiving 152.555
MHz, press
FUNC
then
UP
to transmit on 152.555 MHz. To return to the split pair condition,
you must recall the memory channel again. This is quickly done by pressing
M.UP
for one step
up, then back down one step with the
M.DN
key.
2.8
KEYBOARD LOCKOUT FUNCTION
The keyboard can be locked out so that accidental pressing of keys does not change
frequency, etc., unknowingly to the operator. To lock the keyboard, press
FUNC
then
LOCK
.
This will disable all keyboard functions (except keyboard unlock) in the receive mode. The
DTMF function during transmit will not be affected. To unlock the keyboard, press and hold
the
LOCK
key for two seconds until the display indicates "UNLOCK".
2.9
VARIABLE FREQUENCY MODE FUNCTION
To enter variable frequency mode, press
RCL
,
0
,
0
,
0
, then
ENTER
. The memory channel that
you were just in will still be valid but now you can manually adjust the frequency with the
M.UP
,
M.DN
,
UP
and
DN
keys. The
UP
and
DN
keys will make the frequency count up or
down in steps of 2.5 kHz. The
M.UP
and
M.DN
keys will make the frequency count up or
down in steps of 1 MHz. You can not change the label. The frequency in this mode can not
be stored in memory. To exit this mode, recall one of the 100 memory channels (ie.
RCL
,
0,0
,
1
). Variable frequency mode is disabled when the internal entry disable jumper is set.
Содержание TFM-138
Страница 13: ...2 2 FIGURE 2 1 Operator s Switches and Controls TFM 138 F10 B software...
Страница 24: ...3 2 FIGURE 3 1 Outline Drawing for Model TFM 138 Transceiver...
Страница 26: ...3 4 Figure 3 2 Wiring Connections for TFM 138 Transceiver...
Страница 30: ...3 8 FIGURE 3 4 Microphone and Sidetone Level Main and Guard Squelch Adjustment Access Holes...
Страница 42: ...STEP SYSTEM PASS FAIL NOTES A 11...
Страница 43: ...STEP SYSTEM PASS FAIL NOTES A 12...
Страница 44: ...STEP SYSTEM PASS FAIL NOTES A 13 NOTES...
