Scan (Busy Stop) Operation; Priority Oper Switch; Tx Offset And Reverse; 3:6 Auto Patch - Kenwood TR-7850 Instruction Manual

2. Split channel memory (CH O, 14)
Example: To store 146.580 MHz receive and
147.660 MHz transmit in CH 14,
proceed as follows:
1. Set the KEY/M.SEL switch (13) to the KEY position
(mm ).
2. Set the memory channel selector (16) to CH 14.
3. Enter the receive frequency.
input:
a) Press the (E) key (MHz digit)...........
b) Press the key (100 KHz digit)....
c) Press the key (10 kHz digit)....... h.
d) Press the (O) key (1 kHz digit).........
E im
nO
pn
Dm
Note:
For frequency input precautions, refer to "Notes"
in the preceding section.
(4) Store the receive frequency in memory.
Press the key.
A pulsed tone will sound, indicating transmit
frequency is ready to be accepted.
Note:
1. The tone will sound intermittently until the
transmit frequency is stored in memory.
2. When the receive frequency is stored,
transmit frequency before the split (CH 14) is
indicated.
(5
—
Enter the transmit frequency.
a) Press the key (MHz digit)............ 7
b) Press the (E) key (100 kHz digit)...... 25
c) Press the (E) key (10 kHz digit)........ 156
d) Press the (O) key (1kHz digit)......... 1565
(6) Store the transmit frequency in memory.
Press the key (tone stops.)............... 65H
The transceiver is now ready for split frequency
operation.
Set the KEY/M. switch (13) to the M.position( HH).
NOTE:
After the transmit frequency is stored, the frequency
display indicates the receive frequency previsouly set by
step (3).
3. Memory channel operation
With the KEY/M.SEL switch in the M. position (HH).
the transceiver operates on the frequency set by the
MEMORY
channel selector (16).
4. Changing memory frequencies.
If you wish to change any memory frequency, store a
new frequency in that channel using the above proce-
dures. The old frequency is erased when the new
frequency is stored.
3-3 SCAN (Busy stop) Operation
The SCAN operation is devided into keyboard scan, memory
scan and priority channel scan. For SCAN operation, the
squelch control should be advanced to the threshold point.
See section 3.7, Squelch.
12
Frequency before
* KEYBOARD SCAN
2. Depress the key. Scan starts automatically in 10
kHz or 5 kHz steps depending on the position of the
STEP switch (14).
3. When a signal is present, scanning stops. Scan restarts
automatically after about 5 seconds.
4. To release the scan, press the key (or the microphone
PTT switch.
- MEMORY SCAN
- PRIORITY CHANNEL SCAN
Depress the PRIORITY ALERT switch (17). Regardless of
the KEY/M. SEL switch position, a tone will sound and the
BUSY indicator (5) will light at about 6 seconds intervals if
the PRIORITY channel is in use. Traffic on the PRIORITY
channel will also be mommentarily heard.
3-4 PRIORITY OPER Switch
3-5 TX OFFSET and REVERSE
After setting channel frequencies by the keyboard, press the
or (=) key. Transmit frequency will be offset plus or mi-
nus 600 kHz from the receive frequency and the TX shift
indicator (3) will display the offset.
By pressing the REV switch (15), the transmit and receive
frequencies will be reversed. If, at this time, the transmit
frequency is beyond the amateur band frequency, a tone will
sound and the transceiver is automatically in simplex mode.
When the REV switch is pressed, the frequency indicated on
the display is also reversed, but the TX shift indicator (3)
will not change.
3-6 AUTO PATCH Operation
With the PTT switch depressed, the keyboses operates in
DTMF. Tone signals will be transmitted for auto patch
operation. In transmit, to operate the fourth column
(ABCD),had the REV switch in and key the third column (3,
6, 9, 7).
3-7 SQUELCH
To eliminate receiver noise at the no-signal condition, slowly
adjust the squelch clockwise until the noise disappears and
the BUSY indicator goes off (threshold point).
The squelch will open, the BUSY indicator will light and the
speaker will operate when a signal is received.
The squelch control is also used for scan operation control.
If the signal is weak or fades during mobile operation,
readjust the squelch for consistent reception.