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When 1750 Hz is selected while Tone or CTCSS is ON, ’T’ or "CT"goes OFF. Often a Tone frequency is required to access repeaters. For example, 88.5 Hz may be needed in the U.S.A. or Canada, and 1750 Hz is used in Europe. The Tone frequencies listed below can be selected. On the TH-22E/TH-42E, 1750 Hz also can be selected. No. Freq. (Hz) No. Freq. (Hz) No. Freq. (Hz) No. Freq. (Hz) 01 67.0 11 97.4 21 136.5 31 192.8 02 71.9 12 100.0 22 141.3 32 203.5 03 74.4 13 103.5 23 146.2 33 210.7 04 77.0 14 107.2 24 151.4 34 218.1 05 79.7 15 110.9 25 156.7 35 225.7 06 82.5 16 114.8 26 162.2 36 233.6 07 85.4 17 118.8 27 167.9 37 241.8 08 88.5 18 123.0 28 173.8 38 250.3 09 91.5 19 127.3 29 179.9 10 94.8 20 131.8 30 186.2 The following procedure allows you to select any of the available tones. 1 Press [F] (1 s), [T/CT]. 2 Turn the ENC/SQL control to select the desired Tone frequency. 3 Press any key other than [MONI] or [LAMP] to store the selected value. AUTOPATCH (U.S.A. and Canada Versions) Some repeaters offer a service called Autopatch. This feature allows you to dial a telephone number from your transceiver and carry on a telephone conversation. This repeater function cannot be used for commercial transactions, but it can save lives when used appropriately during emergencies. Autopatch requires the use of a DTMF (Dual Tone Multi-Frequency) keypad. The keypad includes the 12 keys found on your telephone plus an additional 4 keys (A, B, C, D). These additional keys are required for various control operations by some repeater systems. ■ Activating the Keypad 1 Press and hold [PTT], 2 Press keys in sequence to transmit tones. * To generate single-frequency tones for test purposes, press [MONi] before pressing a single key from [1] to [8]. 31 DTMF Tones Freq, (Hz) 1209 1336 1477 1633 697 1 2 3 A 770 4 5 6 B 852 7 8 9 c 941 * 0 # D Single-Frequency Tones Key Freq. (Hz) Key Freq. (Hz) 1 697 5 1209 2 770 6 1336 3 852 7 1477 4 941 8 1633 Note: Some repeaters'require a special key sequence to activate Autopatch. Check with the control operator. 32 DUAL TONE MULTI-FREQUENCY (DTMF) MEMORY This function is available only on transceivers equipped with a DTMF keypad. ■ Making DTMF Calls To make a DTMF call, hold down [PTT] and press [0] to [9], [A], [B], [C], [DÏ, [*], or [#]. • The microphone is muted and the corresponding DTMF tones are transmitted. You can monitor the tones as they are sent by listening to the speaker audio. • If two keys are pressed, only the tone combination for the key pressed first is sent. ■ Storing DTMF Numbers To store a DTMF number in dedicated DTMF memory channels 1 to 5, follow the procedure below: 1 Press [F] (1 s), [3] to select DTMF Storage. 2 Enter the desired DTMF digits using the keypad (15 digits maximum). • If incorrect data is entered, press [VFO] and enter the correct data from the beginning. • To abort data entry, press [CALL]. The previous mode is restored. 3 Press [MR], [1] to [5]. • Only press a single number corresponding to the desired DTMF memory channel. • The previous mode is restored. ■ Confirming Stored DTMF Numbers 1 Press [F], [3]. • The following display appears: 2 Enter the DTMF memory channel (1 to 5) that contains the DTMF number. • The stored DTMF digits are displayed. • Selecting a DTMF memory channel that has no DTMF number stored causes the previous display to be restored. 33 ■ Transmitting Stored DTMF Numbers To transmit a stored DTMF number, use the following procedure: 1 Press [PTT] + [CALL] and continue holding [PTT] down. * The following display appears: 2 Enter the DTMF memory channel (1 to 5) that contains the DTMF number to be transmitted. • The stored DTMF digits are displayed as they are transmitted. • Transmission continues until all digits are sent. Releasing [PTT] will not interrupt the digits being sent or stop transmission. • Selecting a DTMF memory channel that has no DTMF number stored causes the previous display to be restored. 34 Activating DTMF Transmit Hold It's easier to enter a long string of digits if you don’t have to hold down [PTT] while entering the digits. Your transceiver remains in the transmit state for 2 seconds after pressing each key when this function is activated. 1 Press [CALL] + POWER ON to enter Menu Set-up. 2 Turn the ENC/SQL control to select Menu No. 09. • The current Transmit Hold status appears. * The default is "OFF". 3 Press [CALL] to select "OFF" or "ON". ♦ OFF: Disables Transmit Hold. • ON : Enables Transmit Hold. 4 Press any key other than [CALL], [LAMP], or [MONI] to exit Menu Set-up. SCAN Scan is a useful feature for hands-off monitoring of your favorite frequencies. After becoming comfortable with how to use all 4 types of scan, the monitoring flexibility gained will increase your operating efficiency. The 4 types of scan are as follows: Scan Type Purpose Memory Scan Quick Activity update of your favorite frequencies. VFO Scan Ge...

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