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4-5.
MEMORY
4-5-1.
Microprocessor memory back-up
A lithium battery is contained in the transceiver to retain
memory. Turning off the POWER switch, disconnecting the
power cable, or a power failure will not erase the memory.
The battery should last for approximately five years. When
the battery discharges, an erroneous display may appear in
the display.
Lithium
battery
replacement
should
be performed
by an
authorized KENWOOD service facility; either your KENWOOD
dealer, or the factory, since this unit contains CMOS type cir-
cuitry.
4-5-2.
Microprocessor Initialization
® |nitial state of the microprocessor from the factory.
MAIN BAND
TM-621A|TM-721A/721E SUEBANE
VFO
220
430/440
144
Memory Channel O~9, A~d
220
430/440
144
CALL Channel | (U.S.A version)
220
440
144
TM-721A only | (other market)
=,
430
144
(MHz)
® Microprocessor Initialization
When you want to erase all programmed data, or if the dis-
play should show erroneous information, you should initialize
(reset) the microprocessor using the following procedure.
1. Turn the POWER switch off.
2. Press and hold the F key and turn on the POWER switch.
22
3. Release the F key; the F indicator and Memory Channel
Number
''0'' will display for approximately
5 seconds
after you release the keys.
4-5-3.
Memory Channel
This transceiver provides 14 Memory Channels (0-9, A-d).
In addition to serving as a normal memory channel some of
the Memory Channels serve a dual purpose to specify other
parameters. The functions of these Memory Channels are
described below.
* Memory Channel 1 is used to store the frequency for the
Priority Alert function.
%* Mernory Channel A is used to store the lower limit for
the Programmable Band Scan function.
* Memory
Channel b is used to store the upper limit for
the Programmable Band Scan function.
* Memory
Channel
C and d are used to store odd split
repeater data.
4-5-4.
Memory Contents
Each Memory Channel is capable of storing;
Model
TM-621A/721A
TM-721E
Om
e
~s
Memory Channel
oe | Gd | CALL
Fae
Cd
Frequency data
[e}
(e}
ie)
9)
{2}
Tone Frequency data
°
{e)
{e)
x
x
Tone ON/OFF
S)
[e}
iS)
Xx
X
SHIFT status
(o)
x
fe)
(o)
x
REVERSE ON/OFF
x
i)
x
x
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