TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TFM-500 Installation & Operating Instructions
TiL 98RE243 Rev. N/C Issue 12
2-6
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 i.e. 153.2750.
2. On the UHF band press
FUNC
and then 1 and the desired frequency i.e. 443.5500.
3. You will then be asked for 12.5 or 25.0 kHz channel spacing. Select with
M.UP
or
M.DN
and
press
ENTER
.
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/DPL codes are required, they must be programmed in afterwards.
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. For example, if you are transmitting on 152.000 MHz and receiving
152.555 MHz, select
VHF
on the band select switch and 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 done by quickly 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
and then
LOCK
. This will
disable all keyboard functions (except keyboard unlock) in the receive mode. The DTMF function
will not be affected during transmit. 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
or enter a frequency in the
direct entry mode described above. 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 cause the frequency count up or down in steps of 2.5 kHz. The
M.UP
and
M.DN
keys will cause the frequency count up or down in steps of 1 MHz.
You cannot change the label. The frequency in this mode cannot be stored in memory. To exit
this mode, recall one of the 200 memory channels (i.e.
RCL
,
0
,
0
, 1). Variable frequency mode is
disabled when the internal entry disable jumper is set.
