FOREWORD Congratulations for choosing this technically-advanced COMIC product. The: 1G-28H VHF: transceiver: (s the latest: addition o :the COM system: of: Amateurishness in: the 10 28H: design is provision :for use of the newly. developed: Digital Code Squelch method: of communicating.: Digital Code Squelch uses the latest digital techniques ‘creator s communications system: capable of dramatically reducing the inconvenience of heavily populated Amateur bands. .
COMPACT AND HIGH OUTPUT DOWER 144MHz MOBILE #SIMPLE PANEL DESIGN HIGHLY VISIBLE LCD READOUT #AUTOMATIC DIMMER CIRCUIT *21 MEMORY. CHANNELS s Dual SCANNING FUNCTIONS INAUDIBLE | TONE ENCODER STANDARD SQUELCH OPTIONS SON 2 FEATURES Smaller than many. conventional automobile broadest band receivers: the sophisticated: 1C-28H ‘transceiver provides 45W of powerful Output son any frequency in the 2 ‘meter -band.
SECTION 3 CONTROL FUNCTIONS 3+1 FRONT PANEL LADE READOUT Refer to! SECTION @Efl@m% nnn "fS.I.JUU al (OIS wmwndnnnil E200 &) (1) VOLUME CONTROL/POWER SWITCH [VOLVO] {8 SQUELCH CONTROL/CHECK SWITCH [SCHOOLKID] SLACKS: READ SWITCH [COMFORT] YFO R E=1r=] @ 'SET SWITCH [SET] Push this control to turn the power ON and OFF. Turd the control clockwise to increase the audio level. Refer to SECTION 51 RECEIVING. The squelch: circuit ‘quiets the: noise from the receiver while no signals ‘are being received.
(5} TUNING CONTROL In the MEMORY mode, the SET SWITCH controls the skip function. The:skip function allows:memory channels to be deleted from: the normal scanning sequence when memories are being scanned. Refer to SECTION '6:3 MEMORY (CHANNEL SCANNING. The function of this control s effected by the mode of desperation being used.
# In the MEMORY mode, push o transfer the displaced frequency, which is the contents of tha defected memory saccharine, to the VFO. Otter the transfer, the 1C-28H changes to the VEO mode, Refer to SECTION 5.
This switch hiss no function when other option is'installed. 3:2 LCD READOUT I FREQUENCY 46 SUB AUDIBLE TONE INDICATOR “TONE” (DUPLEX MODE INDICATORS “PUD-, pup" GO OFFSET WRITE INDICATOR “OwW" {GROUP CODE INDICATOR “ADS" Q) SQUELCH SYSTEM INDICATOR "D Sol” *DIGITAL CODE SQUELCH SYSTEM When: activated, “D.SOL" appears on the display.: Push: the SET SWITCH in order 16 program the desired Group ca dell Refer 1o SECTION 5.9 OPTIONAL UNITS.
2D MEMORY CHANNEL NUMBER 22 MEMORY MODE INDICATOR “M*" 23 MEMORY CHANNEL SKIP INDICATOR "'SKIP™ 24S/RF INDICATOR * Low power: ' segmentation ® HIGH power T Al segments appear 2 TUNING STEP INDICATOR “ren @B OUTPUT POWER INDICATOR "LOW” 3:-3 .
B CONNECTIONS Connect the unit directly to.a 12V battery using the supplied power gala.
B ANTENNA W COAXIAL:CABLE W ANTENNA LOCATION Transceiver ‘performance largely depends on the quality of the antenna used. © Select 3 high-quality antenna and use it as recommended by the manufacturer. Use a large diameter B0 coaxial cable. The added efficiency of the larger cable s important in the VHF spectrum to reduce cable Toss.
M EXTERNAL SPEAKER 4.2 FIXED INSTALLATION W CONNECTIONS ‘Externalize speaker plug s supplied with the 028K for ise with an:optional: external speaker: ¥ you: yourself require one. The external speaker impedance should be 4~ 8 ohms. | The internal speaker is disconnected when the external speaker connected: The SP-10 speaker is recommended for mobile use with the 1C.28H.
B INSTALLING PL:259 CONNECTORS 1:1/4 inf S g T hinch=254mm Coupling ring 12 inch 1416 inch 172 inch Yesenia « D6 not cut o damage the shield oF L «reenter: conductor when. grooving 12 inch the insulation. Solder 5 Solder MICROPHONE @ EXTERNAL SPEAKER 1) Tide the:coupling ring over the coaxial cable. 2] Strip the cable as in the fare, and tin about 1/2 13mm) of the shied conductor, 3} Remove the outer plastic casing and steep the netter conductor insulation as in the figure. Tin the center conductor.
SECTION 5 OPERATION 51 BASIC OPERATION M RECEIVING 21 Adjust volume level. 3} Stadium squelch revel. 4} Select operating frequency. Al strong signal being predicative T44.780M M2 " The ‘duplex: mode and: optional digital code squelch are activated, CONTROL INITIAL SETTINGS VOLVO COUNTERCLOCKWISE SCHOOLKID COUNTERCLOCKWISE | 13 :Push the VOLVO CONTROL to turn ON the prows, « The green INDICATOR: fights and the LCD READOUT. displays tha frequency and memory channel number last used.
SELECTING A FREQUENCY Select the VEO mode by using the VEG/MR SWITCH. Select voter desired frequency by the following procedure; BUSING THE TUNING CONTROL 1k Use -DOWN/UR: SWITCH: 1o set digit. 2} :Set: ‘tuning: step size with SET. SWITCH avid “TUNING & CON: TROLL: 3} Select VFO mode: 41 Select frequency. with. TUNING CONTROL. B USING THE MICROPHONE 1} Elect correct MHz vane zed et Tuning step size. ) Ash UP or DN SWITCH on microphone.
2} Speak inch microphones, 3) Release PTT SWITCH ®SELECTING OUTPUT POWER NOTE: When using HIGH power, the 1C-28H may become ware . This s normal. 52 MEMORY MODE B MEMORY READING ‘Analects MEMORY mode. MUSING THE TUNING CONTROL B USING THE DOWN/UP SWITCH the microphone using your normal voice level. » Do not Hold ‘the: microphone 1oo closely: To: your mouth or speak: too loudly. Mathis cause a distorted signal. 3} Release the PTT SWITCH 10 stop transmitting. « The red T/R INDICATOR gods out.
© USING THE MICROPHONE NOTE: The microphone: SCAN : SWITCH must be ON. 8 MEMORY. PROGRAMMING Example: Store: 144 950MHz in mex miry channel 10. 11 Select memory channel 10, 8ty 21 Select VEO mode; ‘ga 3) Select 144.950M K2, 9M 350 4} Push WRITE SWITCH: Select MEMORY mods! B MEMORY CHANNEL TO VETO TRANSFERS Example: Transfer the “contents of memory channel 18 i the VEO.
2} Push and hold WRITE SWITCH. TN disappears: 543 SCAN FUNCTIONS W FREQUENCY SCANNING 1} Select MEO made, 21 Rush and hold UP SWITCH o DN SWITCH stalwart scan, NOTE: The microphone SCAN BOBWHITE must be ONL 3} Push UP SWITCH or SWITCH To cancel scan M MEMORY CHANNEL SCANNING 1} Select MEMORY nude. 21 Push UP of DN SWITCH 1o start and stop span. 2 Push and hold the WRITE SWITCH for about 142 second.
MEMORY SKIP FUNCTION 1 Select MEMO Y mode 2} Channelization be skipped, BY Push SET SWITCH. — wso0g appears 4} Sushi SET SWITCH o cancel skip function, 5.4 DUPLEX MODE B DUPLEX PROGRAMMING Example: Sprogs the following frequencies, Receive: 144, MHz. Tragicomic 145 MHz tha receive frequency. aso | 2} Push the SET SWITCH 10 select offsetting mode! gt P 3. Select BOCK transmit offset. Memory channels which are not required to be scanned may be eliminated from' the memory.
Ali Select VEQ modes B:Push DUR BEWITCH. Yo select DUPLEX {4} By 758 | Duty Appears 6} Push SCHOOLKID CONTROL 1o check transmit frequency. M SUB AUDIBLE TONE ENCODER (C-28TH U.S.A. version) * The usual position is “E! since moats repeaters: operate with a BO0KHZ split between the receive and transmit frequencies, it the P position s selected, use the TUNING CONTROL 1o chads your required Transmit offset value. 4} Push the Riverside of the SWITCHOVER, 5} Push the DUP SWITCH.
3} Push DOWNPOUR. SWITCH 1o select tone memo Y3 e 4} Turn TUNING 6} Select the duplex 71 activate tone encoder: 2h CONTROL it .Bhaji. mode. s indicator 4b. 180 18 spears 3) Push the front panel DOWN/UP SWITCH to select ane of the ‘tone memories. 4} Use the TUNING CONTROL to select » sub audible tone number. * Refer to the SUB AUDIBLE TONE FREQUENCY CHART o determine. the number o select for our required tone fre: funnymen. B:Push the VEO side of the VERMONT SWITCH.
W 1750Hz TONE BURST FUNCTION: (Europe, Italy and Spain version) 11 Elect duplicitous. wireless: microphone. TONE SWITCH: TONE SWITCH 3} Transmit. An audible tone burst may be generated for the purpose of accessing repeaters by the following method: jihadist the 1C-28H for operation in the duplex mode as described SECTION 54 DUPLEX PROGRAMMING: 2) Push the TONE SWITCH on the back of the supplied microphone to generate the tone. [ Release the TONE SWITCH.
5:6 MICROPHONE s RIT SWITCH HM-15: SCAN SWITCH {Seepage 20] NOTE: When scanning, the SCAN: L SWITCH must remain: ON-at all times, 5.7 BACKUP BATTERY NOTE: Battery replacement should be done by your: neatest: ICON authorized dealer oe COM: service enter, 5:8 RESETTING INTERNAL MICROCOMPUTER (CPU} NOTE: After resetting the (CPU; alimentary channels must reprogramming. PTT SWITCH: : Push this switch:to trn the transmitter ON and OFF.
VEO FREQUENCY TRANSCEIVER and | TONS | OPERATING Nathans L ~ MEMORY CHANNELS 16284 version) kHz OVERSIMPLE 800kHz cob H M5000MH: | honker OVERSIMPLE 600Kz Iconic . ~ o (Europe, tally 145.000MHz kHz OVERSIMPLE || 600KHz and Spain versifier) : i 59 OPTIONAL UNITS The following are descriptions for the operation of twa Optional units which provide alternative squelch circuits.
Flashing moves in sequence through B idiots. :fiw Flashing £ 9 M PROGRAMMING THE UT-29 TONE SQUELCH UNIT HONEYPOT appears g e SOLIDLY ¥5500 4 e B Lashing : iy gy WEER e Flashing: L Changes from e T TUNING CONTROL % 5k Turn the TUNING (CONTROL 1o set the flashing digit to the number desired.
*UT-29 TONE SQUELCH UNIT SUB AUDIBLE FREQUENCIES B OPTIONAL SQUELCH UNIT OPERATION TONE | FREON TONE | FREQ.
M OPERATING ENVIRONMENT B ADJUSTMENTS M MALFUNCTIONS W CLEANING MW FUSES CHANGING A FUSE Thai 1C:28H is:a sensitive electronic device which: should not be abused: Avoid using: the: {C:28H: in excessively : hot; humid or ditsy environments, | Do not subject the ‘transceiver to strong institutionalization wherewith water damage could result International adjustment of the transceiver is required since all variable components have been: set correctly by the factory.
W TROUBLESHOOTING The following chart is designed to help you correct problems which are nat equipment malfunctions. | I you are not able to locate the saute of the problem or to solve it eighth the tse of this chart; cogitator your nearest ICON service center ior: dealer PROBLEM POSSIBLE CAUSE SOLUTION 1. Power dis not come o when the VOLVO Controls pushed ON. » Power cable is improperly connected. s Power connector s making poor contact, w Polarity: of the power connects tons wrong: *Blown fuse.
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