Icom IC-208H - Manuals

iv 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ■ One-touch PTT function ............................................................... 18 ■ Audio mute function ..................................................................... 18 4 REPEATER OPERATION ...........................................................

I QUICK REFERENCE GUIDE ■ Installation D Installation methods • Single body installation • The supplied mounting bracket (or optional MB-17A) can be used for the main unit installation. • Remote installation • The supplied OPC-600/R SEPARATION CABLE can be used for remote installation. • Optional OP...

II QUICK REFERENCE GUIDE D Location Select a location which can support the weight of the trans-ceiver and does not interfere with driving. We recommend thelocations shown in the diagram below. NEVER place the transceiver or remote controller where nor- mal operation of the vehicle may be hindered o...

III QUICK REFERENCE GUIDE D Microphone connection Connect the supplied microphone as illustrated below. D Separation cable connection Using the supplied separation cable (3.5 m; 11.5 ft) or the op-tional separation cable (7 m; 23 ft) the controller can be sep-arated from the main unit, doubling as a...

IV QUICK REFERENCE GUIDE D Optional MB-58 installation The optional MB-58 REMOTE CONTROLLER BRACKET is avail- able for separate installation. q Drill 2 or 4 holes where the bracket is to be installed. • Approx. 4 mm ( 1 ⁄ 8 ″ ) when using nuts; approx. 1–2 mm ( 1 ⁄ 16 ″ ) when using self-tapping scr...

V D Battery connection ☞ R WARNING NEVER remove the fuse holders from the DC power cable. ☞ NEVER connect the transceiver directly to a 24 V battery. ☞ DO NOT use the cigarette lighter socket for power con- nections. (See p. 5 for details) Attach a rubber grommet when passing the DC power cablethrou...

VI QUICK REFERENCE GUIDE D Antenna installation • Antenna location To obtain maximum performance from the transceiver, selecta high-quality antenna and mount it in a good location. A non-radial antenna should be used when using a magnetic mount. • Antenna connector The antenna uses a PL-259 connecto...

VII QUICK REFERENCE GUIDE ■ Your first contact Now that you have your IC-208H installed in your car orshack, you are probably excited to get on the air. We wouldlike to take you through a few basic operation steps to makeyour first “On The Air” an enjoyable experience. 1. Turning ON the transceiver ...

VIII QUICK REFERENCE GUIDE 3. Tune the frequency The tuning dial will allow you to dial in the frequency you wantto operate. Pages 12 and 13 will instruct you on how to setthe tuning speed. Using the HM-133 You can directly enter the frequency with the HM-133 keypadfor the main band. [EXAMPLE]: Sett...

IX QUICK REFERENCE GUIDE ■ Repeater operation 1. Setting duplex Push [BAND] to select the frequency band.Push [LOW•DUP] for 1 sec. once or twice to select minus du-plex or plus duplex. • The USA version has an auto repeater function, therefore, setting duplex is not required. 2. Repeater tone Push [...

X QUICK REFERENCE GUIDE Quick reference guide ■ Programming memory channels The IC-208H has a total of 512 memory channels (including10 scan edges and 2 call channels) for storing often used op-erating frequency, repeater settings, etc. 1. Setting a frequency In VFO mode, set the desired operating f...

■ Front panel— controller q SET•LOCK SWITCH [SET•LOCK] ➥ Enters set mode when pushed. (p. 56) ➥ Switches the lock function ON and OFF when pushedfor 1 sec. (p. 14) w TUNING DIAL [DIAL] Selects the operating frequency (p. 12), memory channel(p. 26), the setting of the set mode item and the scanningdi...

2 1 PANEL DESCRIPTION 1 y SQUELCH CONTROL [SQL] Varies the squelch level. (p. 15) • The RF attenuator activates and increases the attenuation when rotated clockwise to the center position and further. (p. 16) u MONITOR•DTMF SWITCH [MONI•DTMF] ➥ Push to switch the monitor function ON and OFF. (p. 15)...

3 1 PANEL DESCRIPTION ■ Function display q TRANSMIT INDICATOR ➥ Appears while transmitting. (p. 17) ➥ Blinks while transmitting with the one-touch PTT func-tion. (p. 18) w DUPLEX INDICATORS (p. 20) “DUP” appears when plus duplex, “DUP –” appears whenminus duplex (repeater) operation is selected. e T...

5 1 PANEL DESCRIPTION ■ Rear Panel q DATA SOCKET [DATA] Connects a TNC (Terminal Node Controller), etc. for datacommunications. • See p. 6 for connection information. w EXTERNAL SPEAKER JACK [SP] Connects an 8 Ω speaker. • Audio output power is more than 2.0 W. e COOLING FAN Rotates while transmitti...

6 1 PANEL DESCRIPTION 1 D DATA JACK PIN ASSIGNMENT q DATA IN Input terminal for data transmit. See p. 63 for details onhow to toggle data speed between 1200 (AFSK) and9600 bps (G3RUH, GMSK). w GND Common ground for DATA IN, DATA OUT and AF OUT. e PTT P PTT terminal for packet operation only. Connect...

7 1 PANEL DESCRIPTION ■ Microphone (HM-133*) q VFO/LOCK SWITCH [VFO/LOCK] ➥ Push to select VFO mode. (p. 11) ➥ Push for 1 sec. to switch the lock function ON and OFF.(p. 14) w PTT SWITCH ➥ Push and hold to transmit; release to receive. ➥ Switches between transmitting and receiving while theone-touch...

8 1 PANEL DESCRIPTION 1 ■ Microphone keypad KEY FUNCTION SECONDARY FUNCTION ( +key) OTHER FUNCTIONS Switches between opening and closing thesquelch. (p. 15) Starts and stops scanning. (p. 41) Starts and stops priority watch. (p. 47) Selects high output power. (p. 17) Selects mid. output power. (p. 1...

10 1 PANEL DESCRIPTION 1 ■ Optional Microphones (HM-118N/TN/TAN) q PTT SWITCH Push and hold to transmit; release to receive. w UP/DOWN SWITCHES [UP]/[DN] ➥ Push either switch to change operating frequency,memory channel, set mode setting, etc. (pgs. 12, 26, 56) ➥ Push either switch for 1 sec. to sta...

11 SETTING A FREQUENCY 2 ■ Preparation D Turning power ON/OFF ➥ Push [PWR] for 1 sec. to turn power ON and OFF. D Operating frequency band selection The IC-208H has 2 m and 70 cm bands for transmission andreception. In addition, extra frequency bands 127, 220, 350,500 and 900 MHz bands are available...

12 2 SETTING A FREQUENCY 2 ■ Using the tuning dial q Rotate [DIAL] to set the frequency. • If VFO mode is not selected, push [V/MHz•SCAN] to select VFO mode. • The frequency changes in the selected tuning steps. (p. 13) w To change the frequency in 1 MHz (10 MHz for some versions) steps, push [V/MHz...

13 2 SETTING A FREQUENCY ■ Tuning step selection [ Tuning steps are the minimum frequency change incrementswhen you rotate [DIAL] or push [ Y ]/[ Z ] on the microphone. Independent tuning step for each frequency bands can be setfor individual tuning convenience. The following tuning stepsare availab...

14 2 SETTING A FREQUENCY 2 ■ Lock functions To prevent accidental frequency changes and unnecessaryfunction access, use the lock function. The transceiver has 2different lock functions. D Frequency lock This function locks [DIAL] and switches electronically and canbe used together with the microphon...

15 BASIC OPERATION 3 ■ Receiving q Set the audio level. ➥ Push [MONI•DTMF] to open the squelch. ➥ Rotate [VOL] to adjust the audio level. ➥ Push [MONI•DTMF] to close the squelch. w Set the squelch level. ➥ Rotate [SQL] fully counterclockwise in advance, then ro-tate [SQL] clockwise until the noise j...

16 3 BASIC OPERATION 3 ■ Squelch attenuator The transceiver has an RF attenuator related to the squelchlevel setting. Approx. 10 dB attenuation is obtained at maxi-mum setting. The squelch attenuator allows you to set a minimum signallevel needed to open the squelch. The attenuator function canbe de...

17 3 BASIC OPERATION ■ Transmitting ☞ NOTE: To prevent interference, listen on the channel be- fore transmitting by pushing [MONI•DTMF] on the frontpanel or [ MONI 1(BANK)] on the microphone. q Select the frequency band. (p. 11) w Set the operating frequency. (pgs. 11, 12) • Select output power if d...

■ One-touch PTT function The PTT switch can be operated as a one-touch PTT switch(each push toggles between transmit/receive). Using thisfunction you can transmit without pushing and holding thePTT switch. To prevent accidental, continuous transmission with this func-tion, the transceiver has a time...

19 REPEATER OPERATION 4 Repeaters allow you to extend the operational range of yourradio because a repeater has much higher output power thanthe typical transceiver. Normally, a repeater has independent frequencies for eachreceiver and transmitter.A subaudible tone may also be required to access a r...

20 4 REPEATER OPERATION 4 ■ Accessing a repeater q Set the receive frequency (repeater output frequency).(pgs. 11, 12) w Push [LOW•DUP] for 1 sec. one or two times, to selectminus duplex or plus duplex. • “DUP–” or “DUP” appears to indicate the transmit frequency for minus shift or plus shift, respe...

22 4 REPEATER OPERATION 4 ■ Subaudible tones [ (Encoder function) D Subaudible tones q Select the frequency band, mode/channel you wish to setthe subaudible tones, such as VFO mode or memory/callchannel. w Push [SET•LOCK] to enter set mode. e Push [SET•LOCK] or [DUP•MONI] several times until “T”and ...

D DTMF tones ➥ Push [DTMF-S], then push the keys of the de-sired DTMF digits. • The function indicator lights green.• 0–9, A–D, M (E) and #(F) are available. • When “d” is displayed in place of the 100 MHz digit, cancel the DTMF memory encoder in advance.(p. 50) • Push [DTMF-S] again to return the k...

24 4 REPEATER OPERATION 4 ■ Offset frequency [ When communicating through a repeater, the transmit fre-quency is shifted from the receive frequency by an amountdetermined by the offset frequency. Independent offset frequencies can be set for each operatingfrequency. q Push [BAND] to select the desir...

■ Auto repeater (U.S.A. version only) The USA version automatically activates the repeater settings (DUP– or DUP+ and tone encoder ON/OFF) when the operating frequency falls within the general repeater output frequencyrange and inactivate them when outside of the range. D Setting the auto repeater f...

26 5 MEMORY OPERATION 4 5 ■ General description The transceiver has 512 memory channels including 10 scanedge memory channels (5 pairs), and 2 call channels. Each ofthese channels can be individually programmed with operat-ing frequency (pgs. 11, 12), duplex direction (p. 21) and off-set (p. 24), su...

27 5 MEMORY OPERATION ■ Programming a memory channel [EXAMPLE]: Programming 145.870 MHz into memory channel 20 (blank channel) via the controller. Push Rotate for setting frequency, etc. Push . Rotate Push for 1 sec. and continue to push ➠ Beep “ Beep Beep Beep “ “ “ “ “ Beep “ VFO settings, includi...

28 5 MEMORY OPERATION 5 D Programming a memory channel via the microphone [EXAMPLE]: Programming 145.870 MHz into memory channel 20 (blank channel) via the microphone. Push 10 times Beep “ Beep “ Beep Beep Beep “ “ “ “ “ Push Push then Push then for 1 sec. and continue to push ➠ The microphone can a...

29 5 MEMORY OPERATION ■ Copying memory contents This function copies a memory channel’s contents to VFO (oranother memory/call channel). This is useful when searchingfor signals around a memory channel frequency and for re-calling the offset frequency, subaudible tone frequency etc. D Memory/call ➪ ...

30 5 MEMORY OPERATION 5 D Memory/call ➪ memory/call q Select the memory/call channel to be transferred. ➥ Push [M/CALL•PRIO] several times to select memorymode or call channel, then rotate [DIAL] or push [BAND]to select the desired memory or call channel respec-tively. w Push [S.MW•MW] momentarily. ...

31 5 MEMORY OPERATION ■ Programming channel names Each memory channel and the call channel can be pro-grammed with an alphanumeric channel name for easyrecognition and can be indicated independently by channel.Names can be a maximum of 6 characters— see the tablebelow for available characters. q Pus...

5 MEMORY OPERATION 33 D D To indicate the channel name [ The channel name indication can be set for independentmemory channels. q Push [M/CALL•PRIO] to select the memory mode. w Rotate [DIAL] to select the desired memory channel to beindicated the channel name. e Push [SET•LOCK] to enter set mode. r...

5 MEMORY OPERATION 34 5 ■ Memory clearing Contents of programmed memories can be cleared (blanked),if desired. q Push [V/MHz•SCAN] to select VFO mode. w Push [S.MW•MW] momentarily. • “ ! ” indicator and the memory channel number blink. e Rotate [DIAL] to select the memory channel to be cleared. • Me...

35 5 MEMORY OPERATION ■ Memory bank selection The IC-208H has a total of 10 banks (A to J) . Regular memory channels, 1 to 500, are assigned into the desired bank foreasy memory management. q Push [M/CALL•PRIO] several times to select memorymode, if desired. w Push [BAND] to select memory bank condi...

36 5 MEMORY OPERATION 5 ■ Memory bank setting [ q Push [M/CALL•PRIO] several times to select memorymode, then select the desired memory channel via [DIAL]. w Push [SET•LOCK] to enter set mode. e Push [SET•LOCK] or [S.MW•MW] several times until“BAK” appears. r Rotate [DIAL] to select the desired bank...

37 5 MEMORY OPERATION ■ Transferring bank contents [ Contents of programmed memory banks can be cleared ortransferred to another bank. INFORMATION: Even if the memory bank contents are cleared, the memory channel contents still remain pro-grammed. q Select the desired bank contents to be transferred...

38 6 CALL CHANNEL OPERATION 5 6 ■ Call channel selection Call channel is pre-programmed memory channel that can beaccessed by simply pushing call channel button. ➥ Push [M/CALL•PRIO] several times to select the call chan-nel mode then push [BAND] to select the desired callchannel. • “C1” or “C2” app...

39 6 CALL CHANNEL OPERATION ■ Programming a call channel Operating frequency, duplex information, subaudible tone in-formation (tone encoder or tone squelch ON/OFF and its fre-quency) can be programmed into the call channel. q Set the desired frequency in VFO mode. ➥ Push [V/MHz•SCAN] to select VFO ...

40 7 SCAN OPERATION 6 7 ■ Scan types Scanning searches for signals automatically and makes iteasier to locate new stations for contact or listening purposes. There are 3 scan types and 4 resume conditions to suit youroperating needs. BAND SCAN (p. 41) Repeatedly scans all frequen-cies over the entir...

41 7 SCAN OPERATION ■ Scan start/stop D Preparation Scan resume condition (p. 45); program the scan edges(pgs. 42, 43); program 2 or more memory channels (pgs. 27,28); set skip settings (p. 44), if desired. D Operation q Select VFO mode for full/programmed scan with[V/MHz•SCAN]; or memory mode for m...

42 7 SCAN OPERATION 7 ■ Scan edges programming Scan edges can be programmed in the same manner asmemory channels. Scan edges are programmed into scanedges, 1A/1B to 5A/5B, in memory channels. q Set the edge frequency of the desired frequency range inVFO mode: ➥ Set the frequency using [DIAL]. ➥ Set ...

43 7 SCAN OPERATION D Programming scan edges via microphone z Set the desired frequency in VFO mode. ➥ Push [VFO/LOCK] to select VFO mode. ➥ Set the frequency via the keypad or [ Y ]/[ Z ]. x Push [FUNC] then [ CLR A(MW)] momentarily. c Push [ Y ] or [ Z ] to select scan edge channels, 1A, 2A, 3A, 4...

44 7 SCAN OPERATION 7 ■ Skip channel setting [ The memory skip function speeds up scanning by checkingonly those memory channels not set as skip channels. Setskip channels as follows. q Select a memory channel: ➥ Push [M/CALL•PRIO] to select memory mode. ➥ Rotate [DIAL] to select the desired channel...

45 7 SCAN OPERATION ■ Scan resume condition [ The scan resume condition can be selected as timer or pausescan. The selected resume condition is also used for prioritywatch. (p. 47) q Push [SET•LOCK] to enter set mode. w Push [SET•LOCK] or [S.MW•MW] several times until“SCT” or “SCP” appears as shown ...

46 8 PRIORITY WATCH 7 8 ■ Priority watch types Priority watch checks for signals on a VFO frequency every5 sec. while operating in memory mode. The transceiver has3 priority watch types to suit your needs. You can also trans-mit on the VFO frequency while the priority watch operates. The watch resum...

47 8 PRIORITY WATCH ■ Priority watch operation q Select VFO mode; then, set an operating frequency. w Set the watching channel(s). For memory channel watch: Select the desired memory channel. For memory scan watch: Select memory mode; then, push [V/MHz•SCAN] for 1 sec.to start memory scan. For call ...

48 9 DTMF MEMORY ENCODER 8 9 ■ Programming a DTMF code DTMF tones are used for autopatching, controlling otherequipment, etc. The transceiver has 16 DTMF memory chan-nels (D0–DF) for storage of often-used DTMF codes of up to24 digits. q Push [MONI•DTMF] for 1 sec. to turn the DTMF encoderON. • “d” a...

49 9 DTMF MEMORY ENCODER D Programming a DTMF code— via microphone z Push [FUNC] then [ LOW 6(DTMF)] to turn the DTMF encoder ON. • “d” appears in place of 100 MHz digit. x Push [ SET B(D-OFF)] to enter the DTMF memory programming condition. c Push [ Y ] or [ Z ] to select the desired DTMF memory ch...

50 9 DTMF MEMORY ENCODER 9 ■ Transmitting a DTMF code D Automatic transmission (DTMF memory) q Push [MONI•DTMF] for 1 sec. to turn the DTMF memoryencoder ON. • “d” appears in place of 100 MHz digit. w Push [SET•LOCK] to enter DTMF memory programmingcondition. e Rotate [DIAL] to select the desired DT...

51 9 DTMF MEMORY ENCODER D Manual transmission z Deactivate the DTMF memory encoder bypushing [FUNC] then [ SET B(D-OFF)]. x Push [DTMF-S] to turn the DTMF direct selec-tion ON. • The function indicator (microphone) lights green. c Push one of “0” to “9” and “A” to “F” keys mo-mentarily, then push t...

52 10 POCKET BEEP AND TONE SQUELCH 9 10 ■ Pocket beep operation This function uses subaudible tones for calling and can beused as a “common pager” to inform you that someone hascalled while you were away from the transceiver. D Waiting for a call from a specific station q Set the operating frequency...

53 10 POCKET BEEP AND TONE SQUELCH z Set the operating frequency. x Program the CTCSS tone frequency or DTCScode in set mode. ➥ Push [ SET B(D-OFF)] to enter set mode. ➥ Push [ SET B(D-OFF)] or [ ENT C(T-OFF)] several times until “CT” for tone squelch or“DT” for DTCS squelch appears. • “T SQL” blink...

54 10 POCKET BEEP AND TONE SQUELCH 10 ■ Tone/DTCS squelch operation The tone or DTCS squelch opens only when receiving a sig-nal with the same pre-programmed subaudible tone or DTCScode, respectively. q Set the operating frequency. w Program the CTCSS tone frequency or DTCS code in setmode. • See p....

55 10 POCKET BEEP AND TONE SQUELCH ■ Tone scan By monitoring a signal that is being operated with pocketbeep, tone or DTCS squelch function, you can determine thetone frequency or DTCS code necessary to open a squelch. q Set the desired operating frequency or memory channel tobe checked for a tone f...

56 11 OTHER FUNCTIONS 10 11 ■ Set mode • Set mode operation q Push [SET•LOCK] to enter the set mode. w Push [SET•LOCK] or [S.MW•MW] to select the desireditem. e Rotate [DIAL] to select the condition or value. r Push [MONI•DTMF] to exit set mode. • Set mode items z Push [ SET B(D-OFF)] to enter set m...

57 11 OTHER FUNCTIONS D D Display dimmer Adjust to suit lighting conditions.The levels 1 (dark) to 8 (bright: default) are available. D D Display color The display color can be set to amber (default), yellow orgreen. D D Mic lock function Sets the supplied HM-133’s (optional for some versions) keylo...

58 11 OTHER FUNCTIONS 11 D D DTCS code Sets DTCS code (both encoder and decoder) for DTCSsquelch operation. Total of 104 codes are available. (default: 023) D D DTCS polarity Sets DTCS polarities for transmission and reception from“NN,” “NR,” “RN” and “RR.” (default: NN) D D Offset frequency Sets th...

59 11 OTHER FUNCTIONS D D Scan resume timer Selects scan resume timer from SCT-15 (default), SCT-10,SCT-5 and SCP-2. • SCT-15/10/5 : Scan pauses for 15/10/5 sec., then re- sumes. • SCP-2 : Pause on a signal until signal disap- pears, then resumes 2 sec. after the sig-nal disappears. D D Channel skip...

60 11 OTHER FUNCTIONS 11 D D Program scan skip setting Sets the program scan skip setting from ON and OFF forVFO scan operation, such as programmed scan.This item appears when set mode is accessed from VFOmode only. D D Weather alert function Turns weather alert function ON and OFF. D D Memory bank ...

61 11 OTHER FUNCTIONS ■ Initial set mode The initial set mode is accessed at power ON and al-lows you to set seldom-changed settings. In this way,you can “customize” transceiver operations to suit yourpreference and operating style. • Initial set mode items D D Entering initial set mode q While push...

62 11 OTHER FUNCTIONS 11 D D Key-touch beep The key-touch beep can be turned OFF for silent operation. D D Time-out timer To prevent accidental prolonged transmission, etc., the trans-ceiver has a time-out timer. This function cuts a transmissionOFF after 1–30 min. of continuous transmission. This t...

63 11 OTHER FUNCTIONS D D Cooling fan control Selects the cooling fan control condition from Auto and ON. • Auto (AT) : The fan rotates during transmit and for 2 min. after transmission, or when the internal tem-perature of the transceiver exceeds the pre-set value until the temperature drops. • ON ...

64 11 OTHER FUNCTIONS 11 D D Active band Selects the frequency selecting condition via [DIAL] or [ Y ]/[ Z ] on the microphone from all (AL) and single (SI). • All (AL) : The operating frequency can be selected continuously. • Single (SI) : The operating frequency can be selected within the current ...

66 11 OTHER FUNCTIONS 11 ■ Weather channel operation (USA version only) D D Weather channel selection q Push [M/CALL•PRIO] several times to select weatherchannel group. w Rotate [DIAL] to select the desired weather channel. e Push [M/CALL•PRIO] to select memory mode, or push[V/MHz•SCAN] to select VF...

67 11 OTHER FUNCTIONS ■ Microphone keys The supplied HM-133’s (optional for some versions) [F-1] and[F-2] keys memorize the transceiver conditions. The [UP]/[DN] keys of the standard or an optional microphone(other than the HM-133) can be assigned functions like thefunction keys on the transceiver’s...

68 11 OTHER FUNCTIONS 11 ■ Partial reset If you want to initialize the operating conditions (VFO fre-quency, VFO settings, set mode contents) without clearingthe memory contents. ➥ While pushing [V/MHz•SCAN] and [SET•LOCK], push[PWR] for 1 sec. to partially reset. ■ All reset The function display ma...

69 11 OTHER FUNCTIONS ■ Data cloning Cloning allows you to quickly and easily transfer the pro -grammed contents from one transceiver to another; or datafrom a personal computer to a transceiver using the optionalCS-208 CLONING SOFTWARE . D Cloning between transceivers q Connect the OPC-474 cloning ...

70 11 OTHER FUNCTIONS 11 D Cloning using a personal computer Data can be cloned to and from a personal computer (Mi-crosoft ® Windows ® 98/2000/Me/XP) using the optional CS-208 CLONING SOFTWARE and the optional cloning cable OPC-478U (USB type) or OPC-478 (RS-232C type). Consult the CS-208 CLONING S...

71 11 OTHER FUNCTIONS ■ Packet operation D Data speed For packet operation, the transceiver can be set to one of twodata speeds: 1200 bps or 9600 bps. q While pushing [SET•LOCK], push [PWR] for 1 sec. to enterinitial set mode. w Push [SET•LOCK] or [S.MW•MW] to select the ‘BPS’ item. e Rotate [DIAL] ...

73 11 OTHER FUNCTIONS D 9600 bps high speed packet operation The transceiver supports 2 modes of 9600 bps packet opera-tion: G3RUH and GMSK. q Connect the transceiver and a TNC as illustrated below. w G3RUH mode can handle 16 kinds of modulated waveforms in order to maintain a communication link. e ...

74 11 OTHER FUNCTIONS 11 D Adjusting the transmit signal output fromthe TNC When setting data transmission speed to 9600 bps, the datasignal coming from the TNC is applied exclusively to the in-ternal limiter circuitry to automatically maintain band width. NEVER apply data levels from the TNC of ove...

75 MAINTENANCE 12 PROBLEM POSSIBLE CAUSE SOLUTION REF. ■ Troubleshooting If your transceiver seems to be malfunctioning, please checkthe following points before sending it to a service center. Does not turn on. No sound comes from thespeaker. Sensitivity is low and onlystrong signals are audible. No...

76 12 MAINTENANCE 12 ■ Fuse replacement If the fuse blows or the transceiver stops functioning, find thesource of the problem if possible, and replace the damagedfuse with a new, rated one (FGB 20 A) as shown at right. 20 A fuse PROBLEM POSSIBLE CAUSE SOLUTION REF. Some memory channelscannot be sele...

77 SPECIFICATIONS AND OPTIONS 13 ■ Specifications D D GENERAL • Frequency coverage : USA Rx 118.000–173.995 MHz* 1 , 230.000–549.995 MHz* 2 , 810.000–999.990 MHz* 3 Tx 144–148 MHz, 440–450 MHz Australia, Asia Rx 118.000–173.995 MHz* 1 , 230.000–549.995 MHz* 2 , 810.000–999.990 MHz Tx 144–148 MHz, 43...

78 13 SPECIFICATIONS AND OPTIONS 13 ■ Options HM-133 REMOTE - CONTROL MICROPHONE Wired remote control microphone with key backlight. Same as thatsupplied with the transceiver. HM-118TAN/TN DTMF MICROPHONE HM-118N HAND MICROPHONE HS-62 FLEXIBLE MOBILE MICROPHONE + HS-15SB SWITCH BOX + OPC-589 ADAPTOR...

79 MODE ARRANGEMENT 14 Key-touch beep (p. 62) Time-out timer (p. 62) DTMF speed (p. 64) Narrow transmission (p. 64) SET MODE DTMF MEMORY CLONE MODE CALL CHANNEL (p. 38) WEATHER CHANNEL (p. 66) (USA version only) BANK CHANNEL MEMORY MODE (p. 26) VFO mode (p. 11) INITIAL SET MODE Display dimmer (p. 57...