Kenwood TM-741A User Manual Page 41
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4-6. REPEATER OPERATION
4-6-1. Transmitter Offset
All amateur radio repeaters use a separate receive and
transmit frequency. The receive frequency may be above
or below the transmit frequency. The configuration of
most repeaters fall into one of the categories listed
below:
145.1 145.5 146.0 146.4 146.6 147.0 147.4 147.6 148.0
144 MHz
band
220 MHz
band
TM-741A
440/430 MHj
band
TM-741E
430 MHz
band
-I-
-f600 kHz
-fl.6 MHz
-b5MHz + 1.6 MHz
-
—600 kHz
-1.6 MHz
-5 MHz -1.6 MHz
—
— — —
-7.6 MHz
• Offset Direction
To select the desired transmitter offset direction press
the SHIFT key. Each time you press the key the
transceiver advances from one direction to the other, i.e.
“ + ” to “ —” ” to “
------
” with European versions or
1200 MHz band) to no offset (simplex).
• Automatic Offset (U.S.A., and Canada versions)
The TM-641A/741A has been programmed according to
the standard ARRL (Amateur Radio Relay League)
Band Plan with regard to transmitter offset direction.
See the accompanying chart for additional information
about this programming. You can, of course, override
this by using the SHIFT key if desired.
s
—
s + s
—
+ s
—
s
220.000 223.920 224.995
S: simplex
S: simplex
4-6-2. Reverse Function
Some repeaters use a “Reverse Pair”, i.e. the transmit /
receive frequencies are the reverse of other repeaters.
For example, repeater A uses 146.000 for a transmit
frequency (INPUT) and 146.600 for a receive frequency
(OUTPUT). Repeater B might use 146.600 for a
transmit frequency and 146.000 for a receive frequency.
It would be inconvenient to have to reprogram the
transceiver each time you wanted to use these repeaters.
The REV key allows you to easily reverse the transmit
and receive frequencies. To use the REV function press
the REV key. The REV indicator goes on on the display
to indicate that you are working a reverse pair.
To return to normal press the REV key again. The REV
indicator goes off.
This function is also useful to check the input frequency
of the repeater so that you can determine if you are
within range for simplex communications.
41
- INSTRUCTION MANUAL 1
- Save this instruction manual 2
- CONTENTS 3
- 2-1. SPECIFICATIONS 6
- 2-2. ACCESSORIES 7
- 3-1-2. Mounting Bracket 9
- 3-2-1. Antenna 9
- 3-2. CONNECTION 9
- 3-2-2. Mobile Installations 10
- Battery Connections 10
- 3-2-3. Fixed Station 11
- I Function key Assignments 15
- 4-1-2. Microphone 16
- (saSffflSs issBBRBs ibbBBBBs^ 17
- 4-1-3. Display Panel 18
- 4-2-2. Frequency Selection 22
- Mode selection 22
- ^unnn inn 23
- IriuC ^unnn mn 23
- ALL BAND mode 24
- INDIVIDUAL BAND mode 24
- 4-3. TRANSMITTER OPERATION 27
- 4-3-1. Transmission 27
- 4-3-2. TX. Alert 27
- ^ C Л Л П 28
- 4-4. MEMORY 29
- 4-4-3. Memory Channels 30
- 4-4-4. Memory Contents 30
- 31
- #Call Channel 32
- 4-4-7. Memory Banks 32
- •Memory Bank link 32
- 4-4-6. Memory Channel Recall 32
- •Memory Consolidation 34
- 4-4-8. Clearing Memory 35
- •Clearing a memory channel 35
- 4-4-9. Memory Shift 35
- 4-5. SCAN 36
- 4-5-1. Scan Options 36
- 4-5-3. Band Scan 37
- 4-5-7. CALL Scan 39
- 4-5-9. Automatic Memory Scan 39
- Demonstration mode 40
- + 1.6 MHz 41
- 220.000 223.920 224.995 41
- (U.s.a. version only) 43
- .\ I /Лти 44
- F : 145.660MHz 46
- Member 1 46
- Member 2 46
- Member 3 46
- 4-8-1. Paging Code Memories 47
- 4-8-2. Code Selection 47
- 4-8-3. Code Transmission 48
- 4-8-4. Paging Code Monitoring 49
- Stand by with individual code 49
- VVu.uuu 50
- J U U L> “ 51
- 1 U»-l l-lfl 51
- Alarm Sound Selection 52
- 4-11. DIMMER (DIM) 52
- 4-14. KEY LOCKS 54
- 5. CLOCK 55
- 5-1. CURRENT TIME AND DATE 55
- 5-2. OTHER CLOCK FUNCTIONS 56
- I Stopwatch 56
- I.C J uuUU.UU 58
- 1 mniHnlfll 59
- 6. MAINTENANCE 61
- •GENERAL INFORMATION 61
- •SERVICE 61
- •IN CASE OF DIFFICULTY 62
- 7-2. CTCSS UNIT (TSU-7) 65
- 7-3. DTMF UNIT (DTU-2) 65
- 7-3-1. Installation 65
- /flflfl&aa! /flsaaaafW 66
- (( ' ¡¡ ) 67
- ( Fig. 1) 68
- (Fig. 1) 68
- (Fig. 2) 68
- (Fig. 3) 68
- Cord Bush 69
- 7-5. BRACKET 70
- 7-6 BAND UNITS 71
- ®. Remove the cases 71
- 7-6-1. Installation 71
- REmove the spacer 72
- Attach the connector 73
- ®. Replace the cases 73
- Then turn ON 75
- 28MHz band 50MHz band 76
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