RECEIVER Receiving system: Receiving Mode Intermediate Frequency Sensitivity Squelch sensitivity Spurious response rejection ratio Selectivity Audio output power Audio output impedance 858, CW. Single conversion superintendency EM Double conversion superintendency SSR (A3, PILLSBURY, CW (A1), EM {E3) S6B, CW 10.75MHz EM 10,75MHz, 465KHz SSB. CW . Less than 0.5 micro volts for 10dB SH/N M More than 3048 at 1 micro volt Less than 0.6 micro volts for 20dB Noise quieting Less than 0.
(S fond said e o) : 144MHz ALL-MODE TRANSCEIVER INCORPORATING A MICROCOMPUTER CPU control with Comics original programs provides various operating capabilities. No:backlash dial controlled by ICBM's unique photo-chopper irenic. Band-edge detector and Endless System provides out-of-band protection. No variable capacitors or dial ‘gear) giving use. The 1IC260A/E provides EM, USB. LSB, CW coverage in the 144 ~~14B6MH2 (IC-260A : 1438~ 148, MHz) frequency tangs.
UNPACKING Carefully remove your transceiver from the packing carton and examine it for signs of shipping damage. Should any: be apparent, notify the delivering carrier 'or dealer immediately, stating the full extent of the damage. Iris recommended you keep the shipping cartons. {n the event storage, moving. or reshipment becomes necessary, they come in handy. Accessory hardware, cables; ete; are packed with the transceiver, Make sure you have not overlooked anything. 1. ‘Microphone {dynamic type) : 8.
Angle adjustment Optional installation POWER REQUIREMENTS The transceiver is supplied: ready (o operate from any requited 13.8V DC, 3.5 ampere negative ground source; An automobile |12 volt, negative ground, system is usually more: than adequate. Some note must be taken; however, of the condition of the.vehicle's electrical system: Hems such as Iow: battery. worn generator/alternator. poor voltage ‘regulator, stc) Wil impair operation of our transceiver as: well as the vesicle.
ANTENNA The most important single item that will influence the performance of any communication system is ‘the antenna. . For that reason, 3 good, highfalutin, gain antenna of B0 ohms impedance is recommended, Nixed or mobile: In:VHF s wile as the low bands, every watt of ERP makes some difference.: i Therefore; 10 watts average: output plus 3dB of gain antenna equals 20 watts: ERP presuming fow: SWERVE of course.
CW KEY When berating CW; connect ‘the: Key o the Key: sack: with the: ply supplied a8 shown in the figure. 1 ‘the terminals have polarity, be sure 1o make the correct connection. Note that the keyed voltage whine swishing with semiconductors or relays with resistors in the circuit, should be adjusted to be below 0.4 Alts! Key Wiring Dis gram QUICK TUNING KNOB ADAPTER The tuning contra knob has click-stops.
FRONT PANEL BIVALVE GANG SWITCH RECEIVE INDICATOR TUNING SPEED SWITCH bobby TRANSMIT INDICATOR FREQUENCY DISPLAY 1 (METER (MODE SELECT 3 . SWITCH (IMMEMORIAL. SWITCH: {GRIT CONTROL (MIC CONNECTOR (TUNING CONTROL KNOB SQUELCH CONTROL and RE POW @SCAN. STARVATION WORE SWITCH & MEMORY WRITE BUTTON VOLUME CONTROL and (TONE CALL SWITCH POWER SWITCH (INCISE BLANKER SWITCH {BIANCA SWITCH MODE SELECT SWITCH Selects either:side band, U8B or: LSB, for 85B operation.: For EM or.
7 10, SCAN START Starting the Programmed Sean and Memory Scan. SCAN SOFT 1 Stopping any of the scan functions: . TONE CALL SWITCH Most repeaters require a 1760Hz Tone-burst for initial access. Depressing the Tore Call Switch for the required period for a repeater, Purus the set in the transmit mode and the tone burst generator actuates and you can recess the: repeater. . (HC-2B0A < The Tone Call unit is not instated, this switch can be-used Tor a Transmit/Receive switch.} .
memory chariness {17213, Sée “PROGRAMMING THE MEMORY CHANNELS” on page 18 for more details; 1 addition, when: tie: VEQ s switched bromine VEO fo the other VEO, the frequency indicated ‘on the frequency display just prior 1o switching goes into d memory inside the CPL Thus even it "B VEQ is being used switching to 1A’ again will enable you'to operate st the initial “A” frequency. Switching back from A’ to B’ results in the same operation.
21 MEMORY SWITCH 22, 23 Whist this switch is in the ON (up) position, the power to the CPU of the IC-260A/E is supplied continuously, even when the POWER Switch on the front panel is turned OFF, to retain all the programmed frequencies in' the Memory Channels, the ‘operating frequencies: of the two Vet's, et¢.
L3 HOW TO TUNE The : following :instructions :are: for tuning in any mode. Please read carefully and understand fully before turning ON your unit.. Proper tuning is necessary for optimum operation, PRESET FREQUENCIES When' the POWER: switch ‘is turned ON; ‘the frequency display will ibe: 145.000.0 representing 145.000.0MHz, when the Memory: Switch in the 77A7, RATBAG NS 1% 02 and i3 positions, and the display will show 145 680D.
happens, rotate the Tuning Control either clockwise or counterclockwise by at least one priciest oF the Knob.
VFQ, displayed on the frequency display, and stored in VB! memory. 3. RAT: The receive frequency is controlled by “A” VEO and the transmit frequency is controlled by BT VEQ. | Both Frequencies ave stored in their respective memories; and. displayed during: their respective: operation times frequency during receive, and "B frequency during transmit). 4 RB-TA: The receive frequency s controlled: by 1 “B': VFO ‘and the ‘transmit frequency: is controlled by "AY VEO, the reverse of the above.
W “RA-TB” or “RB-TA" positions will allow vou 1o operate a repeater or split transmit/receive frequencies. FOR EXAMPLE: Set the VFO GANG Switch in the "GANG? position and turn the POWER Switch ON. "B VFO will be prissiness Bookish abase "A” VFO, Set “AVE 1o 145.1250MHz or "B” VFO 10 Then set the MEMORY, Switch: to the "BB-TA" position, 146.725.0MHz wail be show on the readout during receive {87 VFO) and 145.125.0MHz during transmit T"A” VF. You are now receiving on: 148.728.0MHz shd transmitting on 145.125.
e A FOR EXAMPLE: Set the VEO GANG Switch to the “SEP” position and set “AT VFO to 145.7250MHz and "B VO 10 145.025.0MHz: Then set the VO GANG Switch to the “GANG! position; and the VFO/ MEMORY Switch to the "RA-TB" position.. 145,725.0 will ‘be shown on the readout during receive (YA NFO) and 1145.025.0 during transmit ("B” VOL You: are now receiving on 145726 0MH2 and transmitting on: 145.028.0MHz2 5o you tan access 3 TOOK ‘separation repeater.
MEMORY CHANNEL OPERATION MEMORY-WRITE (PROGRAMMING THE MEMORY CHANNELS] Duly "A7VEQ can be'used for memory>writing. 1.5 Set the Tuning Control 1o the desired: frequency. using A" VEO. For example; set it for the display. 2. Set the VFO Switch 1o the channel to be programmed {1, 2], or [31). For example, hesitate Memory Channel 1. I no frequency has been programmed since turning the power of the unit ON, 145,000.0 will be shown on the display and the unit will receive on this frequency. 3.
19 Far: example, program 145.200MHz in: Memory Channel (21 and 145.800MHz in: Memory Channel 31 2. Set the MEMORY Switch Depressing the SS/MW Button starts the scan from: the bight adj {145.300MHz} ‘to the fow Beige. The scanning frequency increments depend on the MODE Switch setting and the TS Button setting. When the scanning frequency: reaches the lowest edge {145.200MHz); it automatically returns o the high edge (146 800MH2} and ‘continues scanning down ' 10! provide ‘endless scanning operation.
SSB OPERATION 1 RECEIVING After connecting an antenna. microphone, etc. set’knobs and switches as follows. MODE SELECT SWITCH USB or L5B RIT CONTROL HOE position or center (12 o'clack) position NOISE: BLANKER SWITCH | OFE {ouT) VEO GANG SWITCH ASSERT (Pushed IN) AGE SWITCH normal {QUT) VOLUME: CONTROL: and POWER SWITCH Completely counterclockwise (OFF position} SQUELCH CONTROL and RF POWER SWITCH Completely counterclockwise (Pull switch is normal position.) MEMORY.
rectified IF signals' from the IF amp circuit fora certain period.: Therefore, during the pauses in: normal speech iof the received signal, Uncomfortable noise will not be heard: The mater indicates the peak value fora certain period, facilitating reading of the meter /'8 function. For normal SSB reception, set the AGC switch iin the OUT (slow) position. Set the AGC Switch in the FAST (pushed IN} position, when tuning or receiving signals with short interval fading.
EM OPERATION 1. RECEIVING Set knobs and switches as follows. MODE SELECT SWITCH £M VEQ GANG SWITCH GANG {out) MEMORY SWITCH Lord SQUELCH CONTROL Completely counterclockwise Other knobs and switches are set the same as for 588 reception. When the IC260A/E is first muted ON, "AY VFO will be preset at 145.000MHz and 87 VEQ will be preset at 145.600MHz.
Your has been tested very carefully at the factory before shipping. The that below has: been: designed: to help you correct any: problems which: are not equipment malfunctions. If You are into able ‘to locate the problem ‘and/or solve 1 through use of this chart. please contact your dealer or ICON distributor for assistance. turned. Power cord is connected with the polarity reversed. Blown fuse Problem Possible Cause Solution 1.
g Problem Possible Cause Solution 8 Lowborn RE output. RE Power switch is sett the Li ow position. PTT Switch js not functioning due to bad connection of the MIC connector, The antenna feeder is cut or shorted. When SSB: or FM s desired but the MODE Switch is in the OW position. Set the RF Power switch to the High [normal) position Check: the connection of the MIC connector and ‘correct any problems; § Check the antenna feeder and correct any problems. Ser the MODE ‘Switch 1o the USB, LSB or FM position.
Problem Possible Cause Solution 10 The memory scan ‘operation: : does: into the S5/MW Switch s pushed. No: frequent i programmed i the memory. channels or the same frequency: is deprogramming: the memory. channels: The MEMORABLY. Switch snottiness the MS position. Program the required frequencies initiate: memory channels following the instructions for "MEMORY CHANNEL OPERATION" on:page 18, Set the MEMORY. Switch i the MS:position: 1t The programmed scan operation: ides: into function when the S5/MW .
MAIN UNIT: TRANSISTORS NOTE: Measuring instrument is a 50KV multiyear. TR Na: TRANSMIT COLLECTOR COLLECTOR OR O EMITTER OR SQUELCH REMARKS an GND OND Q6 ax GND GND Q12 ololoiolaioiolo GND: Q13 GND Q15 o o 62 Q16 GND Q18 ©lo & Q1e BN Q20 2.0 Q21 Qe “GND Q23 as Q24 Q2% Q6 GND Q27 BND: Ragga GREY 1 QW dimes 028 18 Comrade Q30 GNE 1 CW mode: a3 GONER 1 OW mode: Q33 GNE: MAIN UNIT IC IN TRANSMIT MODE Icon. 14135116 REMARKS: ic 1€2 e 1c4 o o GNOME O 1es 1C6.
NOTE: Ether devices work in C-MOS level and with puss signals, so the voltages can nat be measured with a 50KV centimeter. ‘The function of the CPU s identified with reading the relationship between the R output and the K input signals: Refer to the following timing chart of the R output signals.
