INSTRUCTION MANUAL DUAL BAND FM TRANSCEIVER iT7H This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
IMPORTANT CAUTIONS READ ALL INSTRUCTIONS carefully and completely before using the transceiver. RWARNING! NEVER hold the transceiver so that the SAVE THIS INSTRUCTION MANUAL—This instruction manual contains important operating instructions for the IC-T7H. antenna is very close to, or touching exposed parts of the body, especially the face or eyes, while transmitting. The transceiver will perform best if the microphone is 5 to 10 cm (2 to 4 in) away from the lips and the transceiver is vertical.
UNPACKING DO NOT push the PTT when not actually desiring to transmit. DO NOT operate the transceiver near unshielded electrical blasting caps or in an explosive atmosphere. AVOID using or placing the transceiver in direct sunlight or in areas with temperatures below –10°C (+14°F) or above +60°C (+140°F). Place unit in a secure place to avoid inadvertent use by children. Accessories included with the transceiver: Qty. ➀ Antenna ............................................................................
TABLE OF CONTENTS IMPORTANT ........................................................................ i EXPLICIT DEFINITIONS ..................................................... i CAUTIONS .......................................................................... i UNPACKING ....................................................................... ii TABLE OF CONTENTS ..................................................... iii 4 ADVANCED FUNCTIONS ...................................
PANEL DESCRIPTION 1 ■ Switches, controls, keys and connectors 4[SP/MIC] 5[DIAL] 6[VOL] 3 7[RX/TX] LOCK 2[LOCK] 8[MONI] 9[POWER] 1[PTT] MONI POWER SCAN @[BAND] A[H/L] B[TONE] BA TO NE C I H L CLR MHz A VFO D K E F J[DC13.5V] SKIP B MR C CALL DTMF•M . H ND SET DUP T SCAN MW D S.
1 PANEL DESCRIPTION ➊ PTT SWITCH [PTT] (p. 12) ➏ VOLUME CONTROL [VOL] Push and hold to transmit; release to receive. Rotate [VOL] clockwise to increase volume and counterclockwise to decrease volume. ➋ LOCK SWITCH [LOCK] ➐ RX/TX INDICATOR [RX/TX] (p. 12) Slide up to turn the lock function ON. • [PTT], [VOL], [H/L], [MONI] and [POWER] function even when the lock function is activated. ➌ ANTENNA CONNECTOR (p.
PANEL DESCRIPTION !1 OUTPUT POWER SWITCH [H/L(SET)] SET ➥ Push to toggle between low and high output L H power (p. 12). !4 MEMORY MODE KEY [MR(SKIP) < ] SKIP B ➥ Push this key to select memory mode (p. 12). MR ➥ Push and hold to enter set mode. !2 TONE SWITCH [TONE(DUP)] DUP ➥ Push this switch to activate the following funcNE TO tions in order (pgs. 21, 22). ➥ Push this switch for 1 sec. to select semi-duplex or simplex operation (p. 13).
1 PANEL DESCRIPTION !7 TONE SCAN KEY [TSCAN?] ➥ Push this key for 1 sec. to start and stop tone deT SCAN code scan (p. 13). @0 EXTERNAL DC POWER JACK [DC13.5V] Allows operation with a 4.5 to 16 V DC power source using the optional cables, CP-12L or OPC-254L. • When a subaudible tone is detected, the tone frequency is displayed and overwrites the preprogrammed: ➠ tone squelch frequency when the tone squelch is in use; ➠ tone encoder (repeater tone) frequency when the tone squelch is not in use.
PANEL DESCRIPTION 1 ■ Function display ➊ ➋ ➌ DUP T SQL SKIP ➍ ➎ ➑ L OW ➐ ➊ DUPLEX INDICATORS (p. 13) Appear during semi-duplex operation. • “– DUP” appears for minus duplex; “DUP” only appears for plus duplex. ➋ TONE INDICATORS (p. 21) “T” appears when the subaudible tone encoder is in use, “T SQLS” appears during pocket beep operation and “T SQL” appears when the tone squelch function is activated. ➌ SKIP INDICATOR (p. 20) Appears when a selected memory channel is set as a skip channel.
2 BATTERY PACKS AND ACCESSORIES ■ Battery pack charging ■ About the battery pack The supplied* BP-180 BATTERY PACK includes rechargeable Ni-Cd batteries and can be charged approx. 300 times. Charge the battery pack before first operating the transceiver or when the battery pack becomes exhausted. D Operating period Depending on the attached battery pack, the operating period of the transceiver varies. Refer to p. 28 for battery pack specifications.
BATTERY PACKS AND ACCESSORIES 2 ■ Charging connections D Regular charging D Rapid charging with the BC-119 Attach the supplied* or optional battery pack; then, connect the supplied* wall charger via an AC outlet as shown below. ➀ Insert the AD-56A into the charging slot of the BC-119. ➁ Insert the AD-56B into the groove in the AD-56A (front-facing side of the AD-56A). ➂ Insert the battery pack, either by itself or attached to the transceiver, into the AD-56B.
2 BATTERY PACKS AND ACCESSORIES ■ Battery case D Operation with an optional cable Connect an optional charger or cable to the transceiver as illustrated below. Be careful of battery overcharging as the connected battery is charged simultaneously. When using a battery case attached to the transceiver, install 4 AA(R6) size alkaline batteries as illustrated below. Remove the case from the transceiver.
BATTERY PACKS AND ACCESSORIES 2 ■ Accessory attachment D Antenna D Belt clip D Handstrap Insert the supplied antenna into the antenna connector and rotate the antenna as shown in the diagram below. Remove screws, then attach the belt clip using the same screws. Conveniently attaches to your belt. Attach the handstrap as shown in the diagram below. Facilitates carrying. Keep the jack cover attached when jacks are not in use to avoid bad contacts.
3 BASIC OPERATION ■ Power ON ■ Setting a frequency Push and hold [POWER] for 1 sec. to turn power ON. D Via the keypad (within a band) • Current battery voltage is displayed for 2 sec. ➁ Push [BAND] to select the ➀ Push [VFO] to select VFO mode. VHF or UHF band. Push for 1 sec. POWER for 1 sec. after 2 sec. 5 • The display shows the approx. voltage in 0.5 V steps. • When the battery voltage is lower than 4.5 V, “LOW V” appears. Charge the battery in this case.
BASIC OPERATION ■ Setting tuning steps D Via the keypad (other band directly) ➀ Push [VFO] to select VFO mode. ➁ Push 6 digit keys, starting from the 100 MHz digit. 4 • The operating band changes automatically. • It’s not necessary to input the decimal point. 4 USING 3 SET MODE This transceiver has 8 tuning steps (VHF and UHF bands have independent settings) as follows: • 5 kHz • 10 kHz • 12.5 kHz • 15 kHz • 20 kHz • 25 kHz • 30 kHz • 50 kHz ➀ Push [VFO] to select VFO mode.
3 BASIC OPERATION ■ Selecting a memory channel ■ Receive and transmit ➀ Push [MR] to select memory ➀ Push [POWER] for 1 sec. to turn power ON. ➁ Adjust the [VOL] control to the desired level. mode. ➁ Push 2 digit keys to select the desired memory channel (or rotate [DIAL]). • The first nine memory channels are preceded by a “0.” • To select scan edges 1A to 4B, use [@] for “A” and [?] for “B.” • Only programmed memory channels can be selected. MR MR • While pushing [MONI], rotate [VOL].
BASIC OPERATION ■ Repeater operation 3 D Tone information D General Some repeaters require a tone to be accessed. In this case, precede step ➃ at left with the required tone. When using a repeater, the transmit frequency is shifted from the receive frequency by the offset frequency. It is convenient to program repeater information into memory channels (p. 15). DTMF TONES (U.S.A.
3 BASIC OPERATION D Setting subaudible tones for repeater use USING SET MODE Some repeaters require subaudible tones to be accessed. Subaudible tones are superimposed over your normal signal and must be set in advance. ➀ Push [VFO] to select VFO mode. ➁ Push [BAND] to select VHF or UHF. ➂ Push [(H/L)SET] for 1 sec. to enter T 94.8 97.4 100.0 103.5 107.2 110.9 114.8 118.8 123.0 127.3 131.8 136.5 141.3 146.2 151.4 156.7 159.8 162.2 165.5 167.9 171.3 173.8 177.3 179.9 183.
ADVANCED FUNCTIONS 4 ■ Memory/call channels The transceiver has 70 memory channels (60 regular, 4 pairs of scan edge channels for mixed bands and 1 call channel for each band). Note that memory channels are not grouped according to band. In other words, a given memory channel can be programmed with either a VHF frequency or a UHF frequency. This is not the case with call channels. Call channels are band specific.
4 ADVANCED FUNCTIONS D Programming after selection D Memory/call ➾ call/memory ➀ Select the memory channel to be programmed: ➀ Select the memory/call channel to be transferred: ➥ Push [MR] to select memory mode. ➥ Rotate [DIAL] (or use the keypad) to select the memory channel. • Non-programmed channels cannot be selected. ➁ Set the desired frequency in VFO mode: ➥ Push [VFO] to select VFO mode. ➥ Set the desired frequency using the keypad or [DIAL]. ➥ Set other data, if desired. ➂ Push [S.
ADVANCED FUNCTIONS 4 ■ DTMF memory operation D Transmitting a DTMF code D Programming a DTMF code ➥ Push [(•)DTMF] for 1 sec. to select DTMF memory mode. ➥ Rotate [DIAL] to select the desired DTMF channel. ➁ While pushing [PTT] push [MONI] to transmit the selected DTMF channel’s contents. The transceiver has 9 DTMF memory channels (D1 to D9) for storage of often-used DTMF codes of up to 16 digits. ➀ Push [(•)DTMF] for 1 sec. to enter DTMF memory mode. ➁ Rotate [DIAL] to select the desired channel.
4 ADVANCED FUNCTIONS ■ Scan operation D Full/programmed scan ➀ Push [VFO] to select VFO mode. ➁ Push [(BAND)SCAN] for 1 sec.; then, while continuing to FULL SCAN Band edge (e.g. 144.00) Band (e.g. 148.00) edge Scan • “ALL 144” for full scan on the 144 MHz band. • “ALL 430” or “ALL 440” for full scan on the 430(440) MHz band. • “PROG 1” to “PROG 4” for one of the programmed scans. ➥ After releasing [(BAND)SCAN] the selected scan starts.
ADVANCED FUNCTIONS 4 D Memory (skip) scan ➀ Push [MR] to select memory mode. ➁ While pushing [(BAND)SCAN] rotate the tuning dial to se- ALL CHANNEL SCAN lect the desired band. ➥ The following scan bands are selectable: Not yet programmed Mch 2 Mch 3 Mch 4 Mch 5 Mch 6 Mch 1 Mch 7 Mch 60 Mch 11 Mch 10 Mch 9 Mch 8 SKIP ➥ After releasing [(BAND)SCAN], the selected scan starts. ➥ To activate the previously selected scan, dial rotation is not necessary—just push [(BAND)SCAN] for 1 sec.
4 ADVANCED FUNCTIONS D Setting a skip channel D Scan resume condition Memory channels can be set to be skipped during memory scan. This is useful to speedup the memory scan interval. The resume condition can be selected as a pause or timer scan. This setting is common for all scans. ➀ Select the memory channel to be programmed as a skip channel: ➥ Push [MR] to select memory mode. ➥ Rotate [DIAL] (or use the keypad) to select a memory channel. ➁ Push [(MR)SKIP] for 1 sec.
ADVANCED FUNCTIONS 4 ■ Subaudible tone operation SET MODE D Setting subaudible tones for tone squelch operation (CTCSS tones) D Tone squelch operation The tone squelch opens only when receiving a signal containing a matching subaudible tone. You can silently wait for calls from group members using the same tone. Separate tone frequencies can be set for tone squelch operation than for repeater operation (the same range of tones is available—see below). Like repeater tones, these are set in set mode.
4 ADVANCED FUNCTIONS D Pocket beep operation D Tone scan This function uses subaudible tones for calling and can be used as a “common pager” to inform you that someone has called while you were away from the transceiver. The transceiver can detect the subaudible tone frequency in a received signal. By monitoring a signal, such as that being transmitted on a repeater input frequency, you can determine the tone frequency required to access the repeater. ➀ Set the operating frequency.
OTHER FUNCTIONS ■ Initial set mode AT POWER ON Initial set mode is accessed at power ON and allows you to set seldom-changed settings. In this way you can “customize” transceiver operation to suit your preferences and operating style. D Entering initial set mode ➀ While pushing [(H/L)SET] push [POWER] to turn power 5 D Optional HM-75A functions This item turns the microphone simple mode ON or OFF.
5 OTHER FUNCTIONS D Auto power OFF D Beep tones ON/OFF This item allows you to set a time at which the transceiver will automatically turn OFF. The power OFF time can be set to 20, 40, 60 min. or turned OFF. Beep tones can be turned ON or OFF as you prefer. D Function display backlighting D Auto repeater function (U.S.A.
OTHER FUNCTIONS 5 D Power saver duty cycle D DTMF speed This item sets the power saver duty cycle — the ratio of receive circuit ON to receive circuit OFF while standing by. The duty cycle can be set to AUTO, 1:4 or OFF. Setting to AUTO conserves the most battery power. When slow DTMF transmission speeds are required (such as for some repeaters) the transceiver’s rate of DTMF transmission can be adfastest (100 msec. intervals) justed.
5 OTHER FUNCTIONS ■ Channel indication mode AT POWER ON Channel indication mode is used to simplify operation. In this mode only pre-programmed memory channel numbers are displayed and functions are limited ([POWER], [LOCK], [PTT], [MONI], [H/L], [SCAN] and the tuning dial are functional). ➥ While pushing [MR], push [POWER] to turn power ON. • Repeat this operation to return to normal indication. • Needed frequencies must be programmed into memory channels in advance.
TROUBLESHOOTING 6 If your transceiver seems to be malfunctioning, please check the following points before sending it to a service center. PROBLEM POSSIBLE CAUSE SOLUTION REF. No power comes on. • The battery is exhausted. • Charge the battery pack or place new dry cell bat- pgs. 7, (A slight current flows in the circuits even when teries in the battery case. 8 the power is OFF.) (Remove the battery pack if you will not be using the transceiver for a long time.
7 OPTIONS D Battery packs D Speaker-microphones BATTERY HEIGHT OUTPUT VOLTAGE CAPACITY PACK (mm/in) POWER OPER. PERIOD*1 HM-54 Battery case for BP-170 63.5/2.5 R6(AA) x 4 alkaline cells 2.0 (1.5) W 20 (19) h*2 BP-171 63.5/2.5 4.8 V 700 mAh 2.0 (1.5) W 6.2 (5.5) h BP-172 63.5/2.5 4.8 V 950 mAh 2.0 (1.5) W 8.3 (7.5) h BP-173 75.5/3.0 9.6 V 650 mAh BP-180 75.5/3.0 7.2 V 600 mAh 3.9 (2.8) W 4.2 (4.2) h 5 (4.
Frequency coverage (MHz) U.S.A. VHF UHF Tx: 144–148 Tx: 430–450*2 Rx: 118–174*1 Rx: 400–470*2 Europe, U.K. 144–146 Asia Italy 430–440 Tx: 144–148 430–440 Rx: 118–174*1 Tx: 144–148 Tx: 430–440 Rx: 136–174*1 Rx: 400–470*3 TRANSMITTER SPECIFICATIONS Guaranteed ranges are: *1144–148 *2440–450 *3430–440 FM (F3E) 5, 10, 12.5, 15, 20, 25, 30 or 50 Antenna connector BNC (50 Ω) Usable battery pack/case See options on page 28. External DC power 4.
9 MODE ARRANGEMENT NOTE: Displays for set and initial set modes show the default settings—rotate [DIAL] to change the condition. VFO MODE SET ND BA H L push for 1 sec. VFO MR CALL VFO ND BA DTMF•M MR push for 1 sec. MR MEMORY MODE CALL MODE CALL CHANNEL INDICATION MODE SKIP B MR POWER + AT POWER ON 30 . See p.
MODE ARRANGEMENT 9 SET MODE SET H Repeater tones (p. 14) L Tuning step* (p. 11) T CTCSS tones (p. 21) T SQL Scan resume condition (p. 20) Offset frequency* (p. 14) CLR MHz A VFO DUP NE TO *Cannot be selected when entering set mode from a memory or call channel. POWER TO ENTER H L TO EXIT at power ON Auto power OFF (p. 24) SET H INITIAL SET MODE SET + CLR MHz A VFO LCD backlight (p. 24) Beep tones (p. 24) Auto repeater (p. 24) L MIC simple mode (p. 23) U.S.A.
A-5551S-1EX Printed in Japan © 1998 Icom Inc.
