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3. As with VFO mode, the scanner will halt on any signal and resume scanning according to the Scan-Resume mode.

4. To cancel the scanning, press the 

[SCN]

 key again.

Set a "Skipped" Channel During Memory Scan Operation

Some continuous-carrier stations will seriously impede scanner operation and they may be "skipped" during scanning, if

you like.

1. Select the Memory mode by pressing the 

[V/M]

 key, if necessary.

2. Rotate the 

DIAL

 to select the Memory channel to be skipped.

3. Press and hold the 

[SCN]

 key for 1/2 second and the "          " icon will appear on the display. The current Memory ch-

    annel will now be ignored during scanning. The "          " icon will also appear when you recall the "skipped" memory

    channel manually.

4. To cancel the "skipped" feature, press and hold the 

[SCN]

 key for 1/2 second again to select "OFF".

Preferential Memory Scanning

Set up a "Preferential Scan List" of channels which you can "flag" within the memory system. These channels are design-

ated by a "    " icon when you have selected them.

When you select Preferential Memory Scan mode and start scanning, only those channels bearing the "     " icon will be

scanned.

How to set up and use the Preferential Scan List:

1. Select the Memory mode by pressing the 

[V/M]

 key, if necessary.

2. Rotate the 

DIAL

 to select the channel which you wish to add to the Preferential Scan List.

3. Press and hold the 

[SCN]

 key for 1/2 second, several times if necessary, so as to make the "    " icon appear by the

    channel designator.

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Before you begin to scan, select the way in which you would like the scanner to resume scanning after it halts on a signal.

To set the scan-Resume mode:

1. Short press the 

[SET]

 key to enter Menu mode.

2. Rotate the "Main" band 

DIAL

 to select Menu # 25 

(SCAN)

.

3. Short press the "Main" band DIAL knob, then rotate the "Main" band 

DIAL

 to select the desired scan-resume mode.

TIME:

 the scanner will halt on a signal it encounters, and will hold 5 seconds. If you do not take action to disable the sca-

nner within 5 seconds, the scanner will resume even if the stations are still alive.

BUSY:

 The scanner will halt on a signal it encounters. 2 seconds after the carrier has dropped as the other station(s) ce-

ased transmission, the scanner will resume.

4. Press the 

[SET]

 key to save the new setting and exit to normal operation.

Note:

 the default setting for scan-resume mode is "TIME".

VFO Scanning

1. Select the VFO mode by pressing 

[V/M]

 key, if necessary.

2. Press the 

[SCN]

 key to start scanning.

3. Rotate the "Main" band 

DIAL

 to change scanning frequency direction.

4. If and when the scanner encounters a signal strong enough to open the squelch, the scanner will halt temporarily; the

    decimal point of the frequency display will blink during this "Pause" condition.

5. The scanner will then resume according to the Scan-Resume mode selected in previous step.

6. To cancel scanning, press the 

[SCN]

 key again.

Memory Scanning

1. Select the Memory mode by pressing 

[V/M]

 key, if necessary.

2. Press the 

[SCN]

 key to start scanning.

Summary of Contents for TH-7800

Page 1: ...ve user controls Inherently reliable you can depend on your TH 7800 no matter where you are in the harsh environment The TH 7800 is cost effective multi functional and will meet all of your VHF UHF ba...

Page 2: ...inted Front Panel Operation CONTENTS 01 01 02 03 03 03 04 04 05 06 07 08 09 09 10 11 11 Display Rear Panel Microphone Basic Operation Switching the power on off Adjusting the volume Adjusting the sque...

Page 3: ...Scanning Set a Skipped Channel During Memory Scan Operation Preferential Memory Scanning Programmable Memory Scan Priority Channel Scanning Dual Watch DTMF Signaling Operation 22 22 22 23 24 24 25 27...

Page 4: ...se holder x 1 Front controller separation cable x 1 Front controller mounting bracket x 1 Screw packs x 1 Protection fuses x 1 User manual x 1 02 Main Features Cover 144 430 MHz four transmitting band...

Page 5: ...he main unit installation Front panel Main body 2 Remote Control Installation The supplied remote controller mounting bracket and separation cable can be used for installation Separation cable connect...

Page 6: ...Red connects to the positive terminal and black connects to the negative terminal 4 Reconnect any wiring removed from the negative terminal 5 Connect the DC power cable to the transceiver s power supp...

Page 7: ...an efficient well tuned antenna The success of your installation will depend largely on the type of antenna and its correct installation The transceiver can give excellent results if the antenna syste...

Page 8: ...ill fault The wrong connection way is as below Error Ground 10 Microphone For voice communications connect a microphone equipped with an 8 pin modular plug into the modular socket on the side of the m...

Page 9: ...set to the Memory mode 1 Short press the key to recall a favorite HOME frequency memory 2 Press and hold in this key for 1 2 second to activate Priority Channel Scanning under VFO or MR mode 1 Short...

Page 10: ...t on the Sub band The icon will blink on the Sub band 6 RIGHT VOL SQL 1 Tuning dial for the right band 2 Short press the knob to set the right band as the Main band 3 Enable rapid tuning in 1 MHz step...

Page 11: ...etting value Increase channel number or setting value Speak here during transmission Locks out the microphone buttons except key 0 9 and PTT Illuminates the microphone keypad Input channel number or D...

Page 12: ...to the right side and vice versa Note Short press the LEFT VOL SQL knob to switch the single receive mode ON and OFF When it is set ON the working vol 18 tage will be shown on the sub band the icon wi...

Page 13: ...rough 800 2 5 pairs of band edge memories labeled L1 U1 through L5 U5 3 6 Home channels which providing storage and quick recall of one prime frequency on each operating band 4 6 Hyper Memory channels...

Page 14: ...requency The synthesizer steps selected for VFO operation on the current band will be the steps used during Memory Tuning 4 Short press V M key again and exit Memory Tuning The icon will disappear Del...

Page 15: ...Short press the SET key to enter the Menu mode 2 Rotate the Main band DIAL to select Menu 27 RPT MOD 3 Short press the Main band DIAL knob then rotate the Main band DIAL to select the desired shift am...

Page 16: ...047 122 172 252 331 423 503 631 754 051 125 174 255 332 431 506 632 053 131 205 261 343 432 516 654 054 132 212 263 346 445 523 662 065 134 223 265 351 446 526 664 25 CTCSS Tone DCS Code Operation CTC...

Page 17: ...operating band or a portion of that band It will halt on signals encountered so you can talk to the station s on that frequency if you like 27 DCS Code Inversion If you find that the TH 7800 receiver...

Page 18: ...imes if necessary so as to make the icon appear by the channel designator 29 Before you begin to scan select the way in which you would like the scanner to resume scanning after it halts on a signal T...

Page 19: ...topatch or other uses 31 To scan Preferential Memory Scan 1 Short press the SET key to enter the Menu mode 2 Rotate the Main band DIAL to select Menu 26 SCAN M 3 Short press the Main band DIAL knob th...

Page 20: ...p and the dis play will change back to the IN RNG indication 33 To load DTMF autodialer memories 1 Short press the SET key to enter the Menu mode 2 Rotate the Main band DIAL to select the Menu 12 DTMF...

Page 21: ...set to a Low level to ensure cooler operation 35 Cross band Repeater Operation The TH 7800 can be set up to operate as a cross band repeater via a simple Menu procedure This feature is useful for emer...

Page 22: ...ange and a low beep will sound when the other station goest out of range ALWAYS Activates the ARTS feature a high tone will sound every time a polling transmission is received from the other station a...

Page 23: ...riting feature for the Hyper Memory Available Values MANUAL AUTO Default MANUAL 14 KEY MOD Function select the key functions for the right band function switches 39 4 BEEP Function enable Disable the...

Page 24: ...S FULL Default OFF Note The Menu Item can be set independently on both the left and right bands 15 LOCK Function enable disable the Key Button Lock feature Available Values MANUAL AUTO Default MANUAL...

Page 25: ...or decoder mode Available Values OFF ENC ENC DEC DCS Default OFF 43 25 SCAN Function selects the scan resume mode Available Values TIME BUSY Default TIME TIME the scanner will halt on a signal it enc...

Page 26: ...efault OFF 45 32 Time Out Timer TOT Function set the time out timer Available Values OFF 1 30 min Default 6 min ENC CTCSS Encoder ENC DEC CTCSS Encoder Decoder DCS Digital Code Squelch Encoder Decoder...

Page 27: ...d Potential Solutions Microphone or antenna connection is poor Connect them properly Keypad lock is activated Disable it 47 Factory Reset Operation Procedure 1 Turn the radio off 2 Press and hold the...

Page 28: ......

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