Programmable Memory Scan; Priority Channel Scanning (Dual Watch); Dtmf Signaling Operation - TYT TH-7800 User Manual

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, then rotate the "Main" band DIAL to "MSM".
4. Press the [SET] key to save the new setting and exit to normal operation.
5. Now, press the [SCN] key to start Preferential Memory Scanning. Only the channels which have the "
ed to the channel number will be scanned.
6. To cancel the Preferential Memory Scanning, select "MEM" in step 3 above.

Programmable Memory Scan

This feature allows you to set sub-band limits for either scanning or manual VFO operation.
1. Select the VFO mode by pressing [V/M] key, if necessary.
2. Store the frequency 1 into Memory Channel # L1 (the "L" designates the Lower sub-band limit).
3. Likewise, store the frequency 2 into Memory Channel # U1 (the "U" designates the upper sub-band limit).
4. Switch to the Memory mode by pressing [V/M] key once, then rotate the DIAL to select Memory Channel # L1.
5. Press and hold in the [V/M] key for 1/2 second to start operation; the "MT" label will appear on the display. Tuning and
scanning will now be limited within the just-programmed range.
6. Five pairs of Band Limit memories, labeled L1/U1 through L5/U5 are available. You therefore can set upper and lower
operation limits on a number of bands, if you like.
Note:
Please make sure CH # L1 frequency is lower than CH # U1 frequency and both of them are in the same frequency band.
If not it will be invalid.

Priority Channel Scanning (Dual Watch)

The TH-7800 has a two-channel scanning capability which allows you to operate on a VFO, Memory channel, or Home
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channel, while periodically checking a user-defined "Priority" Memory Channel for activity.
VFO Priority
1. Recall the memory channel you wish to use as the "priority" frequency.
2. Select the VFO mode by [V/M] key, if necessary.
3. Press and hold in the [HM] key for 1/2 second to activate the VFO priority mode. The display will remain on the VFO
" icon append-
frequency, but every 5 seconds the TH-7800 will check the Priority Channel for activity.
4. Press the [V/M] key to disable the VFO Priority mode and exit to regular VFO operation.
Memory Priority
1. Store the frequency you wish to be the "Priority" Channel into memory channel "1".
2. Set the TH-7800 for operation on another memory channel.
3. Press and hold in the [HM] key for 1/2 second to activate the Memory Priority mode. The display will remain on the cu-
rrent memory channel frequency, but every five seconds the TH-7800 will check the Priority Channel (memory channel
"1") for activity.
4. Press the [V/M] key to disable the Memory Priority mode and exit to regular memory operation.

DTMF Signaling Operation

The TH-7800 has two methods to start DTMF signaling.
1 - Using the microphone's numeric keys
Press and hold PTT switch then directly input the other station(s) telephone numbers by using the microphone s numeric
keys, 0 ~ 9, *, #, A, B, C, D.
2 - Using the DTMF Autodialer feature
16 DTMF autodialer memories are available. These DTMF autodialer memories can store up to 16 digits of a telephone
number for, repeater autopatch or other uses.
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