Kenwood th-k20a- Manuals

iii • Danger of explosion if the battery is incorrectly replaced; replace only with the same type. • When operating the transceiver in areas where the air is dry, it is easy to build up an electric charge (static electricity). When using an earphone accessory in such conditions, it is possible for t...

iv • Do not pierce the battery with any object, strike it with an instrument, or step on it! This may break or deform the battery, causing a short-circuit. The battery may generate heat or smoke, rupture, or burst into flame. • Do not jar or throw the battery! An impact may cause the battery to leak...

v CONTENTS PREPARATION ................................................................................................... 1 SUPPLIED ACCESSORIES ........................................................................... 1INSTALLING THE ANTENNA..........................................................

1 PREPARATION SUPPLIED ACCESSORIES After carefully unpacking the transceiver, identify the items listed in the table below. We recommend you keep the box and packaging for shipping. Item Comments Quantity K type E type M type Antenna 1 1 1 Li-ion battery pack KNB-63L 1 1 1 Battery charger with AC ad...

2 INSTALLING THE BATTERY PACK Note: Because the battery pack is provided uncharged, you must charge the battery pack before using it with the transceiver. To charge the battery pack, refer to “CHARGING THE BATTERY PACK ” {page 3}. 1 To install the battery pack, align the base of the battery pack wit...

3 CHARGING THE BATTERY PACK The battery pack can be charged after it has been installed onto the transceiver. (The battery pack is provided uncharged for safety purposes.) 1 Confirm that the transceiver power is OFF. • While charging the transceiver with a battery pack installed, be sure to turn the...

4 Approximate Charging Times 3 hours Charger Status Table Indicator color Meaning Red A battery pack is in the charging slot and charging has started. Blinking Red The battery pack is defective or the battery pack contacts are not properly mated with those of the charger. Green Charging is completed...

5 Connecting to a Cigarette Lighter Socket To use the cigarette lighter socket, use the optional KVC-22 DC vehicular charger adapter. When using the Charger, attach it to the vehicle as shown below. DC power cable (supplied with the KVC-22) To the cigarette lighter socket Charger + KVC-22 To the jac...

6 GETTING ACQUAINTED PWR/VOL control Turn clockwise to switch the transceiver ON. To switch the transceiver OFF, turn counterclockwise until a click sounds. Rotate to adjust the volume level. TX-RX LED Lights red while transmitting and green while receiving a signal. ENC Control Rotate to select an ...

7 Keypad Use the keypad to perform the following operations. Additionally, you can use the 10-key keypad for direct frequency entry and manually transmitting DTMF tones. Key name Press Operation Ref. page [F] A [KEY] To enter MHz tuning mode.To turn the Function ON. 11 [F] - [KEY] To turn the Functi...

8 Key name Press Operation Ref. page [LAMP] [KEY] To turn the Backlight ON. 13 [F] - [KEY] To keep the Backlight ON continuously. [STEP] 0 [KEY] To enter the Frequency step size setup mode. 44 [ENT] # [KEY] To enter Direct frequency entry mode. 12 MIC/ SP Jack Connect the optional Speaker/ Microphon...

10 BASIC OPERATION SWITCHING THE POWER ON/OFF Turn the PWR/VOL control clockwise to switch the transceiver ON. • The power on message momentarily appears on the display. Turn the PWR/VOL control counterclockwise to switch the transceiver OFF. ADJUSTING THE VOLUME Rotate the PWR/VOL control to adjust...

11 SELECTING A FREQUENCY VFO MODE This is the basic mode for changing the operating frequency. Rotate the ENC control clockwise to increase the frequency and counterclockwise to decrease the frequency. MHz TUNING MODE If the desired operating frequency is far away from the current frequency, it is q...

12 DIRECT FREQUENCY ENTRY In addition to rotating the ENC control , there is another way to select the frequency. When the desired frequency is far away from the current frequency, you can directly enter a frequency using the numeric keypad. 1 Press [VFO] . • You must be in the VFO Mode to make the ...

14 LOCK FUNCTION The lock function disables most of the keys to prevent you from accidentally activating a function. 1 Press [F] (1s) to turn the Lock function ON. • The “ ” icon appears when the Lock function is ON. • The following keys cannot be locked: [F] , [PTT] , [LAMP] , [MONI] , [SQL] , PWR/...

15 MENU SETUP WHAT IS A MENU? Many functions on this transceiver are selected or configured via a software-controlled Menu rather than through the physical controls of the transceiver. Once you become familiar with the Menu system, you will appreciate its versatility. You can customize the various t...

16 MENU FUNCTION LIST No. Display Description Setting Values Default Setting Ref. Page 1 P.ON.MSG Power On message Up to 6 characters – 45 2 BEEP Key Beep OFF/ ON ON 46 3 LOCK Lock type KEY/ FRQ/ KEY.FRQ KEY.FRQ 4 SAVE Battery saver OFF/ 0.2/ 0.4/ 0.6/ 0.8/ 1.0/ 2.0/ 3.0/ 4.0/ 5.0 (sec) 1.0 (sec) 47...

18 MEMORY CHANNELS In Memory channels, you can store frequencies and related data that you often use. Then you need not reprogram the data every time. You can quickly recall a programmed channel by simple operation. A total of 200 Memory channels are available. SIMPLEX & REPEATER OR ODD-SPLIT ME...

19 Parameter Simplex & Repeater Odd-split Memory channel lockout * Yes Yes Narrow FM Yes Yes Beat shift Yes Yes * Program Scan Memory and the Priority channel cannot be stored as ON or OFF for Memory channel lockout. STORING SIMPLEX AND STANDARD REPEATER FREQUENCIES 1 Press [VFO] to enter VFO mo...

20 STORING ODD-SPLIT REPEATER FREQUENCIES Some repeaters use a receive/transmit frequency pair with a non-standard offset. If you store two separate frequencies in a memory channel, you can operate on those repeaters without programming the offset frequency and direction. 1 Store the desired receivi...

21 Note: ◆ You cannot recall an empty memory channel. An error beep sounds. ◆ You cannot recall the Program Scan memory channels (L0/U0 ~ L2/U2) or Priority Channel (Pr) using the numeric keypad. ◆ When recalling an odd-split memory channel, “ ” and “ ” appear on the display. Press [REV] (Reverse fu...

22 MEMORY DISPLAY TYPE After storing a Memory name, the Memory name appears in place of the operating frequency. However, you can still display the operating frequency, if desired. To display the frequency rather than Memory name, access Menu No. 12 (M.DISP) and select “FREQ”. This menu toggles the ...

23 CALL CHANNEL The Call Channel can be recalled instantly, no matter the frequency on which you are operating the transceiver. For instance, you may use the Call Channel as an emergency channel within your group. In this case, Call Scan will be useful.The default Call Channel frequency is 144.000 M...

24 MEMORY CHANNEL TRANSFER MEMORY TO VFO TRANSFER After retrieving frequencies and associated data from Memory Recall mode, you can copy the data to the VFO. This function is useful, for example, when the frequency you want to monitor is near the frequency stored in a memory channel. 1 Press [MR] , ...

26 SCAN Scan is a useful feature for hands-off monitoring of your favorite frequencies.Becoming comfortable with all types of Scan will increase your operating efficiency.This transceiver provides the following type of scans: Band Scan Scans all frequencies on the current band. Program Scan Scans th...

27 PROGRAM SCAN You can limit the scanning frequency range. There are 3 memory channel pairs (L0/U0 ~ L2/U2) available for specifying the start and end frequencies. Program Scan monitors the range between the start and end frequencies that you have stored in these memory channels. Before performing ...

28 MEMORY SCAN 1 Press [MR] (1s) . • Scan starts from the last memory channel number and ascends up through the channel numbers (default). • Rotate the ENC control to change the scanning direction. 2 To stop Memory Scan, press any key other than [MONI] , [LAMP] , [F] , [SQL] , [F] (1s) , or [F] - [L...

29 5 Press [MR] to store the data on the Priority Channel. USING PRIORITY SCAN 1 Enter Menu mode and access Menu No. 15 (PR.SCAN), then press [F] . 2 Rotate the ENC control to select “ON” , then press [F] to store the setting. 3 Press [MENU] or [PTT] to exit Menu mode. • The “ ” icon appears when th...

30 SELECTING A SCAN RESUME METHOD The transceiver stops scanning at a frequency or Memory channel on which a signal is detected. It then continues scanning according to which resume mode you have selected. You can choose one of the following modes. The default is Time-operated mode. TO Time Operated...

31 OPERATING THROUGH REPEATERS Repeaters are often installed and maintained by radio clubs, sometimes with the cooperation of local businesses involved in the communications industry.Compared to simplex communication, you can usually transmit over much greater distances by using a repeater. Repeater...

32 SELECTING AN OFFSET FREQUENCY To access a repeater which requires an odd-split frequency pair, change the offset frequency from the default which is used by most repeaters. 1 Enter Menu mode and access Menu No. 7 (OFFSET). 2 Rotate the ENC control to select the appropriate offset frequency value....

33 Available Tone Frequencies Tone Frequency (Hz) 67.0 82.5 100.0 123.0 151.4 186.2 225.7 69.3 85.4 103.5 127.3 156.7 192.8 229.1 71.9 88.5 107.2 131.8 162.2 203.5 233.6 74.4 91.5 110.9 136.5 167.9 206.5 241.8 77.0 94.8 114.8 141.3 173.8 210.7 250.3 79.7 97.4 118.8 146.2 179.9 218.1 254.1 TONE FREQU...

34 AUTOMATIC REPEATER OFFSET This function automatically selects an offset direction and activates the Tone function, according to the frequency that you have selected. To obtain an up-to-date band plan for repeater offset direction, contact your national Amateur Radio association. 1 Enter Menu mode...

35 Note: ◆ If the transmit frequency is outside the allowable transmit frequency range when using Reverse, pressing [PTT ] will cause an error tone to sound and transmitting will be inhibited. ◆ If the receiving frequency is outside the receiving frequency range when using Reverse, an error tone wil...

36 SIGNALING CTCSS You may sometimes want to hear calls only from specific persons. The Continuous Tone Coded Squelch System (CTCSS) allows you to ignore (not hear) unwanted calls from other persons who are using the same frequency. To do so, select the same CTCSS tone as selected by the other perso...

37 CTCSS FREQUENCY SCAN This function scans through all CTCSS frequencies to identify the incoming CTCSS frequency on a received signal. You can use this function to find which CTCSS frequency is used by your group. 1 Press [TONE] 2 times to turn the CTCSS function ON. • Each time you press [TONE] ,...

38 USING DCS 1 Press [TONE] 3 times to activate the DCS function. • Each time you press [TONE] , the selection changes as follows: Tone ( ) ➡ CTCSS ( ) ➡ DCS ( ) ➡ Cross Tone ( ) ➡ Off (no display). • The “ ” icon appears when the DCS function is ON. 2 Press [T.SEL] . • The current DCS code appears ...

39 CROSS TONE You can set separate signaling types by TX and RX for when you access a repeater that uses different encode/ decode signaling. 1 Press [TONE] 4 times to activate the Cross Tone function. • Each time you press [TONE] , the selection changes as follows: Tone ( ) ➡ CTCSS ( ) ➡ DCS ( ) ➡ C...

40 DTMF FUNCTIONS This transceiver provides you with 16 dedicated DTMF memory channels. You can store a DTMF code (16 digits max.) in each of these channels to recall later for speed dialing. MANUAL DIALING The numeric keypad functions as a DTMF keypad; the 12 keys found on a touch-tone phone plus 4...

41 • You can move the cursor to the left or right by pressing [VFO] or [MR] . • Press [CALL] to delete the character at the current cursor position. • On the transceiver display, DTMF code “ ” is represented by “E” and “#” is represented by “F”. • When a space is entered, it becomes a “Pause” code. ...

42 DTMF TX HOLD This function causes the transceiver to remain in transmit mode for 2 seconds after you release each key. Therefore, you can release [PTT] while sending DTMF tones through manual dialing. 1 Enter Menu mode and access Menu No. 30 (DT.HOLD), then press [F] . 2 Rotate the ENC control to...

43 AUXILIARY FUNCTIONS PROGRAMMABLE VFO If you want to limit the operating frequencies within a certain range, program the lower and upper frequency limits to the programmable VFO parameters. For example, if you select 144 MHz for the lower limit and 145 MHz for the upper limit, the tunable range wi...

44 FREQUENCY STEP SIZE Choosing the correct frequency step size is essential in order to select your exact receive frequency using the ENC control . You can select your desired frequency step size from: 5, 6.25, 10, 12.5, 15, 20, 25, 30, 50, or 100 (kHz).To change the frequency step size: 1 Press [S...

45 Note: ◆ While Tone Alert is ON, there is no speaker output when a signal is received. To monitor the signal, press and hold [MONI] . ◆ When Tone Alert is ON, APO does not turn the power OFF. ◆ If you switch the transceiver OFF while the “ ” icon is blinking, the transceiver does not back up the e...

46 BEEP FUNCTION The Beep function provides confirmation of entry, error status, and malfunctions of the transceiver. We recommend you leave this function ON in order to detect erroneous operations and malfunctions.However, to turn the beep function OFF: 1 Enter Menu mode and access Menu No. 2 (BEEP...

47 “KEY.FRQ”: Only the following keys can be operated. PWR/VOL control PTT MONI F SQL LAMP BATTERY SAVER The Battery Saver extends the operating time of the transceiver. It automatically activates when the squelch is closed and no key is pressed for more than 10 seconds. To reduce battery consumptio...

48 APO (AUTO POWER OFF) The transceiver switches OFF automatically if no keys or controls are pressed or adjusted for 30 minutes (default). One minute before the transceiver switches OFF, warning beeps sound for a few seconds and “APO” blinks. You can select the APO time from OFF (disable), 30 (defa...

49 BEAT SHIFT Since the transceiver uses a microprocessor to control various functions of the transceiver, the CPU clock oscillator’s harmonics or image may appear on some spots of the receive frequencies. In this case, turn the Beat Shift function ON. 1 Enter Menu mode and access Menu No. 10 (B.SHI...

50 VOX GAIN To enjoy the VOX function, take the time to properly adjust the VOX Gain level. This level controls the VOX circuit to detect the presence or absence of your voice.There are 2 ways to adjust the VOX Gain. While the VOX function is ON:1 Speak into the headset microphone using your normal ...

51 2 Rotate the ENC control to select the desired delay time to 250/ 500 (default)/ 750/ 1000/ 1500/ 2000/ 3000 ms, then press [F] to store the setting. 3 Press [MENU] or [PTT] to exit Menu mode. Note: ◆ If you press [PTT] while the VOX function is ON, the VOX Delay Time is not reflected to the tran...

52 TX INHIBIT You can inhibit transmitting to prevent unauthorized individuals from transmitting, or to eliminate accidentally transmitting while carrying the transceiver. 1 Enter Menu mode and access Menu No. 21 (TX.INH), then press [F]. 2 Rotate the ENC control to select “ON”, then press [F] to st...

53 MICROPHONE PF KEYS There are 3 microphone PF (Programmable Function) keys: [PF1], [PF2], and [PF3]. You can assign your desired functions to these 3 keys. 1 Enter Menu mode and access Menu No. 24 (PF 1) and/or Menu No. 25 (PF 2) and/or Menu No. 26 (PF 3), then press [F] . 2 Rotate the ENC control...

54 Weather Alert is available only in the USA and Canada. When activated, this function will check for a received NOAA 1050 Hz tone. When the tone is received, the weather alert tone will sound. WEATHER ALERT ON/ OFF 1 Enter Menu mode and access Menu No. 35 (WX.ALT), then press [F] . 2 Rotate the EN...

55 APPENDIX OPTIONAL ACCESSORIES The following options are available for use with this transceiver: KNB-63L: Li-ion battery packKNB-65L: Li-ion battery packBT-16: Battery case KBH-18: Belt clip KVC-22: DC vehicular charger adapterKSC-35S: Rapid chargerSMC-32: Speaker microphoneSMC-33: Speaker microp...

56 Note: ◆ Record the date of purchase, serial number and dealer from whom this product was purchased. ◆ For your own information, retain a written record of any maintenance performed on this product. ◆ When claiming warranty service, please include a photocopy of the bill of sale or other proof-of-...

57 Problem Solution You cannot transmit by pressing [PTT] . You selected a frequency outside the allowable range. Select a frequency within the allowable transmit frequency range.You selected a transmit offset that places the transmit frequency outside the limit. Select a proper offset direction or ...

58 TRANSCEIVER RESET There are 2 types of transceiver resets available: Partial Reset Use to initialize all settings other than the Memory channels and DTMF memory channels. Full Reset Use to initialize all transceiver settings that you have customized. There are 2 ways to perform a reset on the tra...

59 SPECIFICATIONS Note: All specifications are guaranteed within the amateur radio band. General TH-K20A/E TH-K40A/E Guaranteed range (MHz) TX & RX 144 ~ 148 (K/M)144 ~ 146 (E) 430 ~ 440 Operation Frequency range (MHz) TX 136 ~ 174 (M)144 ~ 148 (K)144 ~ 146 (E) 400 ~ 470 (M)430 ~ 440 (E) RX 136 ...

iii • Danger of explosion if the battery is incorrectly replaced; replace only with the same type. • When operating the transceiver in areas where the air is dry, it is easy to build up an electric charge (static electricity). When using an earphone accessory in such conditions, it is possible for t...

iv • Do not pierce the battery with any object, strike it with an instrument, or step on it! This may break or deform the battery, causing a short-circuit. The battery may generate heat or smoke, rupture, or burst into flame. • Do not jar or throw the battery! An impact may cause the battery to leak...

v CONTENTS PREPARATION ................................................................................................... 1 SUPPLIED ACCESSORIES ........................................................................... 1INSTALLING THE ANTENNA..........................................................

1 PREPARATION SUPPLIED ACCESSORIES After carefully unpacking the transceiver, identify the items listed in the table below. We recommend you keep the box and packaging for shipping. Item Comments Quantity K type E type M type Antenna 1 1 1 Li-ion battery pack KNB-63L 1 1 1 Battery charger with AC ad...

2 INSTALLING THE BATTERY PACK Note: Because the battery pack is provided uncharged, you must charge the battery pack before using it with the transceiver. To charge the battery pack, refer to “CHARGING THE BATTERY PACK ” {page 3}. 1 To install the battery pack, align the base of the battery pack wit...

3 CHARGING THE BATTERY PACK The battery pack can be charged after it has been installed onto the transceiver. (The battery pack is provided uncharged for safety purposes.) 1 Confirm that the transceiver power is OFF. • While charging the transceiver with a battery pack installed, be sure to turn the...

4 Approximate Charging Times 3 hours Charger Status Table Indicator color Meaning Red A battery pack is in the charging slot and charging has started. Blinking Red The battery pack is defective or the battery pack contacts are not properly mated with those of the charger. Green Charging is completed...

5 Connecting to a Cigarette Lighter Socket To use the cigarette lighter socket, use the optional KVC-22 DC vehicular charger adapter. When using the Charger, attach it to the vehicle as shown below. DC power cable (supplied with the KVC-22) To the cigarette lighter socket Charger + KVC-22 To the jac...

6 GETTING ACQUAINTED PWR/VOL control Turn clockwise to switch the transceiver ON. To switch the transceiver OFF, turn counterclockwise until a click sounds. Rotate to adjust the volume level. TX-RX LED Lights red while transmitting and green while receiving a signal. ENC Control Rotate to select an ...

7 Keypad Use the keypad to perform the following operations. Additionally, you can use the 10-key keypad for direct frequency entry and manually transmitting DTMF tones. Key name Press Operation Ref. page [F] A [KEY] To enter MHz tuning mode.To turn the Function ON. 11 [F] - [KEY] To turn the Functi...

8 Key name Press Operation Ref. page [LAMP] [KEY] To turn the Backlight ON. 13 [F] - [KEY] To keep the Backlight ON continuously. [STEP] 0 [KEY] To enter the Frequency step size setup mode. 44 [ENT] # [KEY] To enter Direct frequency entry mode. 12 MIC/ SP Jack Connect the optional Speaker/ Microphon...

10 BASIC OPERATION SWITCHING THE POWER ON/OFF Turn the PWR/VOL control clockwise to switch the transceiver ON. • The power on message momentarily appears on the display. Turn the PWR/VOL control counterclockwise to switch the transceiver OFF. ADJUSTING THE VOLUME Rotate the PWR/VOL control to adjust...

11 SELECTING A FREQUENCY VFO MODE This is the basic mode for changing the operating frequency. Rotate the ENC control clockwise to increase the frequency and counterclockwise to decrease the frequency. MHz TUNING MODE If the desired operating frequency is far away from the current frequency, it is q...

12 DIRECT FREQUENCY ENTRY In addition to rotating the ENC control , there is another way to select the frequency. When the desired frequency is far away from the current frequency, you can directly enter a frequency using the numeric keypad. 1 Press [VFO] . • You must be in the VFO Mode to make the ...

14 LOCK FUNCTION The lock function disables most of the keys to prevent you from accidentally activating a function. 1 Press [F] (1s) to turn the Lock function ON. • The “ ” icon appears when the Lock function is ON. • The following keys cannot be locked: [F] , [PTT] , [LAMP] , [MONI] , [SQL] , PWR/...

15 MENU SETUP WHAT IS A MENU? Many functions on this transceiver are selected or configured via a software-controlled Menu rather than through the physical controls of the transceiver. Once you become familiar with the Menu system, you will appreciate its versatility. You can customize the various t...

16 MENU FUNCTION LIST No. Display Description Setting Values Default Setting Ref. Page 1 P.ON.MSG Power On message Up to 6 characters – 45 2 BEEP Key Beep OFF/ ON ON 46 3 LOCK Lock type KEY/ FRQ/ KEY.FRQ KEY.FRQ 4 SAVE Battery saver OFF/ 0.2/ 0.4/ 0.6/ 0.8/ 1.0/ 2.0/ 3.0/ 4.0/ 5.0 (sec) 1.0 (sec) 47...

18 MEMORY CHANNELS In Memory channels, you can store frequencies and related data that you often use. Then you need not reprogram the data every time. You can quickly recall a programmed channel by simple operation. A total of 200 Memory channels are available. SIMPLEX & REPEATER OR ODD-SPLIT ME...

19 Parameter Simplex & Repeater Odd-split Memory channel lockout * Yes Yes Narrow FM Yes Yes Beat shift Yes Yes * Program Scan Memory and the Priority channel cannot be stored as ON or OFF for Memory channel lockout. STORING SIMPLEX AND STANDARD REPEATER FREQUENCIES 1 Press [VFO] to enter VFO mo...

20 STORING ODD-SPLIT REPEATER FREQUENCIES Some repeaters use a receive/transmit frequency pair with a non-standard offset. If you store two separate frequencies in a memory channel, you can operate on those repeaters without programming the offset frequency and direction. 1 Store the desired receivi...

21 Note: ◆ You cannot recall an empty memory channel. An error beep sounds. ◆ You cannot recall the Program Scan memory channels (L0/U0 ~ L2/U2) or Priority Channel (Pr) using the numeric keypad. ◆ When recalling an odd-split memory channel, “ ” and “ ” appear on the display. Press [REV] (Reverse fu...

22 MEMORY DISPLAY TYPE After storing a Memory name, the Memory name appears in place of the operating frequency. However, you can still display the operating frequency, if desired. To display the frequency rather than Memory name, access Menu No. 12 (M.DISP) and select “FREQ”. This menu toggles the ...

23 CALL CHANNEL The Call Channel can be recalled instantly, no matter the frequency on which you are operating the transceiver. For instance, you may use the Call Channel as an emergency channel within your group. In this case, Call Scan will be useful.The default Call Channel frequency is 144.000 M...

24 MEMORY CHANNEL TRANSFER MEMORY TO VFO TRANSFER After retrieving frequencies and associated data from Memory Recall mode, you can copy the data to the VFO. This function is useful, for example, when the frequency you want to monitor is near the frequency stored in a memory channel. 1 Press [MR] , ...

26 SCAN Scan is a useful feature for hands-off monitoring of your favorite frequencies.Becoming comfortable with all types of Scan will increase your operating efficiency.This transceiver provides the following type of scans: Band Scan Scans all frequencies on the current band. Program Scan Scans th...

27 PROGRAM SCAN You can limit the scanning frequency range. There are 3 memory channel pairs (L0/U0 ~ L2/U2) available for specifying the start and end frequencies. Program Scan monitors the range between the start and end frequencies that you have stored in these memory channels. Before performing ...

28 MEMORY SCAN 1 Press [MR] (1s) . • Scan starts from the last memory channel number and ascends up through the channel numbers (default). • Rotate the ENC control to change the scanning direction. 2 To stop Memory Scan, press any key other than [MONI] , [LAMP] , [F] , [SQL] , [F] (1s) , or [F] - [L...

29 5 Press [MR] to store the data on the Priority Channel. USING PRIORITY SCAN 1 Enter Menu mode and access Menu No. 15 (PR.SCAN), then press [F] . 2 Rotate the ENC control to select “ON” , then press [F] to store the setting. 3 Press [MENU] or [PTT] to exit Menu mode. • The “ ” icon appears when th...

30 SELECTING A SCAN RESUME METHOD The transceiver stops scanning at a frequency or Memory channel on which a signal is detected. It then continues scanning according to which resume mode you have selected. You can choose one of the following modes. The default is Time-operated mode. TO Time Operated...

31 OPERATING THROUGH REPEATERS Repeaters are often installed and maintained by radio clubs, sometimes with the cooperation of local businesses involved in the communications industry.Compared to simplex communication, you can usually transmit over much greater distances by using a repeater. Repeater...

32 SELECTING AN OFFSET FREQUENCY To access a repeater which requires an odd-split frequency pair, change the offset frequency from the default which is used by most repeaters. 1 Enter Menu mode and access Menu No. 7 (OFFSET). 2 Rotate the ENC control to select the appropriate offset frequency value....

33 Available Tone Frequencies Tone Frequency (Hz) 67.0 82.5 100.0 123.0 151.4 186.2 225.7 69.3 85.4 103.5 127.3 156.7 192.8 229.1 71.9 88.5 107.2 131.8 162.2 203.5 233.6 74.4 91.5 110.9 136.5 167.9 206.5 241.8 77.0 94.8 114.8 141.3 173.8 210.7 250.3 79.7 97.4 118.8 146.2 179.9 218.1 254.1 TONE FREQU...

34 AUTOMATIC REPEATER OFFSET This function automatically selects an offset direction and activates the Tone function, according to the frequency that you have selected. To obtain an up-to-date band plan for repeater offset direction, contact your national Amateur Radio association. 1 Enter Menu mode...

35 Note: ◆ If the transmit frequency is outside the allowable transmit frequency range when using Reverse, pressing [PTT ] will cause an error tone to sound and transmitting will be inhibited. ◆ If the receiving frequency is outside the receiving frequency range when using Reverse, an error tone wil...

36 SIGNALING CTCSS You may sometimes want to hear calls only from specific persons. The Continuous Tone Coded Squelch System (CTCSS) allows you to ignore (not hear) unwanted calls from other persons who are using the same frequency. To do so, select the same CTCSS tone as selected by the other perso...

37 CTCSS FREQUENCY SCAN This function scans through all CTCSS frequencies to identify the incoming CTCSS frequency on a received signal. You can use this function to find which CTCSS frequency is used by your group. 1 Press [TONE] 2 times to turn the CTCSS function ON. • Each time you press [TONE] ,...

38 USING DCS 1 Press [TONE] 3 times to activate the DCS function. • Each time you press [TONE] , the selection changes as follows: Tone ( ) ➡ CTCSS ( ) ➡ DCS ( ) ➡ Cross Tone ( ) ➡ Off (no display). • The “ ” icon appears when the DCS function is ON. 2 Press [T.SEL] . • The current DCS code appears ...

39 CROSS TONE You can set separate signaling types by TX and RX for when you access a repeater that uses different encode/ decode signaling. 1 Press [TONE] 4 times to activate the Cross Tone function. • Each time you press [TONE] , the selection changes as follows: Tone ( ) ➡ CTCSS ( ) ➡ DCS ( ) ➡ C...

40 DTMF FUNCTIONS This transceiver provides you with 16 dedicated DTMF memory channels. You can store a DTMF code (16 digits max.) in each of these channels to recall later for speed dialing. MANUAL DIALING The numeric keypad functions as a DTMF keypad; the 12 keys found on a touch-tone phone plus 4...

41 • You can move the cursor to the left or right by pressing [VFO] or [MR] . • Press [CALL] to delete the character at the current cursor position. • On the transceiver display, DTMF code “ ” is represented by “E” and “#” is represented by “F”. • When a space is entered, it becomes a “Pause” code. ...

42 DTMF TX HOLD This function causes the transceiver to remain in transmit mode for 2 seconds after you release each key. Therefore, you can release [PTT] while sending DTMF tones through manual dialing. 1 Enter Menu mode and access Menu No. 30 (DT.HOLD), then press [F] . 2 Rotate the ENC control to...

43 AUXILIARY FUNCTIONS PROGRAMMABLE VFO If you want to limit the operating frequencies within a certain range, program the lower and upper frequency limits to the programmable VFO parameters. For example, if you select 144 MHz for the lower limit and 145 MHz for the upper limit, the tunable range wi...

44 FREQUENCY STEP SIZE Choosing the correct frequency step size is essential in order to select your exact receive frequency using the ENC control . You can select your desired frequency step size from: 5, 6.25, 10, 12.5, 15, 20, 25, 30, 50, or 100 (kHz).To change the frequency step size: 1 Press [S...

45 Note: ◆ While Tone Alert is ON, there is no speaker output when a signal is received. To monitor the signal, press and hold [MONI] . ◆ When Tone Alert is ON, APO does not turn the power OFF. ◆ If you switch the transceiver OFF while the “ ” icon is blinking, the transceiver does not back up the e...

46 BEEP FUNCTION The Beep function provides confirmation of entry, error status, and malfunctions of the transceiver. We recommend you leave this function ON in order to detect erroneous operations and malfunctions.However, to turn the beep function OFF: 1 Enter Menu mode and access Menu No. 2 (BEEP...

47 “KEY.FRQ”: Only the following keys can be operated. PWR/VOL control PTT MONI F SQL LAMP BATTERY SAVER The Battery Saver extends the operating time of the transceiver. It automatically activates when the squelch is closed and no key is pressed for more than 10 seconds. To reduce battery consumptio...

48 APO (AUTO POWER OFF) The transceiver switches OFF automatically if no keys or controls are pressed or adjusted for 30 minutes (default). One minute before the transceiver switches OFF, warning beeps sound for a few seconds and “APO” blinks. You can select the APO time from OFF (disable), 30 (defa...

49 BEAT SHIFT Since the transceiver uses a microprocessor to control various functions of the transceiver, the CPU clock oscillator’s harmonics or image may appear on some spots of the receive frequencies. In this case, turn the Beat Shift function ON. 1 Enter Menu mode and access Menu No. 10 (B.SHI...

50 VOX GAIN To enjoy the VOX function, take the time to properly adjust the VOX Gain level. This level controls the VOX circuit to detect the presence or absence of your voice.There are 2 ways to adjust the VOX Gain. While the VOX function is ON:1 Speak into the headset microphone using your normal ...

51 2 Rotate the ENC control to select the desired delay time to 250/ 500 (default)/ 750/ 1000/ 1500/ 2000/ 3000 ms, then press [F] to store the setting. 3 Press [MENU] or [PTT] to exit Menu mode. Note: ◆ If you press [PTT] while the VOX function is ON, the VOX Delay Time is not reflected to the tran...

52 TX INHIBIT You can inhibit transmitting to prevent unauthorized individuals from transmitting, or to eliminate accidentally transmitting while carrying the transceiver. 1 Enter Menu mode and access Menu No. 21 (TX.INH), then press [F]. 2 Rotate the ENC control to select “ON”, then press [F] to st...

53 MICROPHONE PF KEYS There are 3 microphone PF (Programmable Function) keys: [PF1], [PF2], and [PF3]. You can assign your desired functions to these 3 keys. 1 Enter Menu mode and access Menu No. 24 (PF 1) and/or Menu No. 25 (PF 2) and/or Menu No. 26 (PF 3), then press [F] . 2 Rotate the ENC control...

54 Weather Alert is available only in the USA and Canada. When activated, this function will check for a received NOAA 1050 Hz tone. When the tone is received, the weather alert tone will sound. WEATHER ALERT ON/ OFF 1 Enter Menu mode and access Menu No. 35 (WX.ALT), then press [F] . 2 Rotate the EN...

55 APPENDIX OPTIONAL ACCESSORIES The following options are available for use with this transceiver: KNB-63L: Li-ion battery packKNB-65L: Li-ion battery packBT-16: Battery case KBH-18: Belt clip KVC-22: DC vehicular charger adapterKSC-35S: Rapid chargerSMC-32: Speaker microphoneSMC-33: Speaker microp...

56 Note: ◆ Record the date of purchase, serial number and dealer from whom this product was purchased. ◆ For your own information, retain a written record of any maintenance performed on this product. ◆ When claiming warranty service, please include a photocopy of the bill of sale or other proof-of-...

57 Problem Solution You cannot transmit by pressing [PTT] . You selected a frequency outside the allowable range. Select a frequency within the allowable transmit frequency range.You selected a transmit offset that places the transmit frequency outside the limit. Select a proper offset direction or ...

58 TRANSCEIVER RESET There are 2 types of transceiver resets available: Partial Reset Use to initialize all settings other than the Memory channels and DTMF memory channels. Full Reset Use to initialize all transceiver settings that you have customized. There are 2 ways to perform a reset on the tra...

59 SPECIFICATIONS Note: All specifications are guaranteed within the amateur radio band. General TH-K20A/E TH-K40A/E Guaranteed range (MHz) TX & RX 144 ~ 148 (K/M)144 ~ 146 (E) 430 ~ 440 Operation Frequency range (MHz) TX 136 ~ 174 (M)144 ~ 148 (K)144 ~ 146 (E) 400 ~ 470 (M)430 ~ 440 (E) RX 136 ...