SECTION 1 INTRODUCTION : SYNTHESIZED HAND HELD TRANSCEIVER This small, light weight 500 channel transceiver comes in handy for Use any time, whether outdoors, in a car, or at home, 500 channels can be used on any 220MHz band frequency, or any repeater. DUAL POWER LEVEL Transmitter output can be switched easily to either of two levels; 1.5W output HIGH for long distances, and 0.16W LOW for short distances. Battery consumption is minimized in the Low Power Mode. The IC-BP5 Power Pack as an option gives 2.
TRANSMITTER Q Output Power Emission Mode Modulation System Max. Frequency Deviation Spurious Emission Microphone Q Operating Mode RECEIVER Receiving System Modulation Acceptance intermediate Frequency Sensitivity Squelch Sensitivity Spurious response rejection ratio Selectivity Audio Output Power Audio Output Impedance Specifications are approximate and are subject to change without notice or obligation. HIGH: 1.5W, LOW: 0.16W at 8.
SORREL 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. It is recommended that you keep the shipping cartons. In the event storage, moving, or reshipment becomes necessary, they come in handy. Various accessories are packed with the transceiver. Make sure you have not overlooked anything. Power pack [C-BPS .
SECTION . 1V. PER-OPERATION BATTERY INSTALLATION When using Nickel-Cadmium power pack 1C-BP3: The IC-BP3 is a rechargeable Nickel-Cadmium power pack, and it can be slipped onto or off of the set very easily. It has a connector for a charger charge-current control circuit, reverse polarity protection circuit and charge indicator LED in its own pack. You can use the supplied BC-25U wall charger or similar simple wall charger, or a car battery by using optional cable IC-CP1 for recharging.
Connect the output plug of the wall charger (BC-25U), or other power source, to the charger socket of the power pack. (When charging Nickel-Cadmium batteries in the 1C-BP4 power pack, you should use the BC-30 charger only.} The charge indicator LED of the power pack is lit, which shows that the charger is working. Cigarette Lighter plug OUTLET o It takes about 15 hours to charge the batteries completely. This charger is designed for 0.
PRECAUTIONS FOR USE OF THE NICKEL-CADMIUM BATTERIES (from the JIS C8705 MANUAL) General Cautions 1. Never short the power pack, Since internal resistance is low, excess shorted current flows away,; causing the batteries or conductors to burn. Avoid shorts! A label showing polarity is on the power pack. Never solder the batteries directly. Hf the batteries are soldered directly, the separator or insulator may become melted and damaged. Accordingly, the terminal must be spot-welded first and then soldered.
When using the alkaline power pack 1C-BP4: Place the power switch in the OFF position. Remove the power pack from the bottom of the set by pushing the pack in the indicated direction while sliding the lock button upward. Separate the pack into two parts (chassis and case) as follows: While sliding the lock button upward, push pack in the Press both sides of the pack. Push the chassis downward, indicated direction, The chassis holds six AA type batteries.
shortened more by transmitting than by receiving, since several times more current is drawn during transmission. To prolong battery life, therefore, practice the following: * Try to minimize the transmit period. * Reduce volumes during reception. Be sure o cut off power source when set is not used. More working hours are available if high-performance batteries are employed. FOR OUTDOOR USE 1. Attach the supplied power pack. (Refer to "BATTERY INSTALLATION") 2.
EXTERNAL ANTENNA 1. Select a high performance antenna {a multi-element beam or gain antenna) and set it up in the highest possible position. 2. Use a 50 ohm antenna and coaxial cable. 3. On VHF, the power loss in the antenna cable is large, so use a cable with the lowest pcssrbie loss and make it as short as possible. 4. Use a BNC plug for connection to the unit. ATTACHMENT OF HAND STRAP AND BELT CLIP ® Attach the belt clip on the back cover with the 2 ‘1 i screws supplied.
ANTENNA CONNECTOR Connect the supplied flexible antenna. An external antenna can be used, using a BNC connector. TRANSMIT/BATTERY INDICATOR Illuminates in the transmit mode. Also indicates the battery condition; during transmission. The voltage of Nickel-Cadmium batteries drops rapidly just before they are exhausted, so when this indicator goes out, be sure to immediately stop using it, and charge the batteries again. SQUELCH CONTROL Sets the squelch threshold level.
A Electric condenser microphone Microphone MIC plug PTT SWITCH Dynamic microphone Microphone L PTT SWITCH F—p MIC plug 1) POWER SWITCH The ON/OFEF switch controls the supplied power to the set. SPARE SWITCH This is a spare switch, and can be adapted to your needs such as a sub-audio tone encoder switch, @ kHz THUMB WHEEL SWITCH Sets kHz digit of the desired operating frequency. 40 100KHz THUMB WHEEL SWITCH Sets 100KHz digit of the desired operating frequency.
() MHz THUMB WHEEL SWITCH Sets MHz digit of the desired operating frequency. When you set a digit of a frequency that is out of the band, the set will work as follows: Digit Actual working frequency band 0 220MHz 221MHz 222MHz 223MHz 224MHz {221MHz) (222MHz) (223MHz) (220MHz) (221MHz) 42 PUSH TO TALK (PTT) SWITCH For transmission, press this switch and talk into the microphone with normal voice. The internal microphone is of the electric-condenser type and provides good pickup for all levels of voice.
w16 = RF POWER SWITCH Selects the RF output power HIGH 1.5 Watt (at 8.4V} or LOW 0.15 Watt (at 84V). In the L OW position, the current drain is decreased, to prolong the battery life. DUPLEX/SIMPLEX SWITCH Selects the operation mode DUPLEX for repeater operation, or SIMPLEX for the same receive/ transmit frequency operation. In the DUPLEX mode, the transmitting frequency is shifted 1.6MHz below the receiving frequency.
SECTION VI -OPERATION. RECEIVING Make sure the (7) POWER SWITCH is in the OFF position, and before turning ON the power switch, confirm as follows: 1. Make sure the power park is properly charged and attached to the set. 2. Make sure the supplied flexible antenna is properly set. When an external antenna is employed, make sure the coaxial line is of the correct impedance (50 ohms) and is neither shorted nor opened, and is firmly connected to the antenna connector.
18 TRANSMITTING Set the controls and switches as follows: @ DUPLEX/SIMPLEX SWITCH (see below) i3 RF Power Switch HIGH For simplex operation, set 19 DUPLEX/SIMPLEX SWITCH at the SIMPLEX position. For repeater operation, set % DUPLEX/SIMPLEX SWITCH at DUPLEX and the transmitting frequency will be 1.6MHz below the receiving frequency. 1f the lower output power is sufficient, set 13 RF Power Switch to the LOW position. Depress the {3 PTT switch for transmitting and release for receiving.
SECTION VI INSIDE-VIEW ; : i MAIN UNIT SIDE Thumbscrew Switches L3~ L5 (RX Band-Pass Filter) F11 (16 MHz Crystal Filter) S1(PTT Switch) F12 455K Hz Ceramic Filter) X2 (16.445MHz 2nd LO Crystal Dual-Tone Encoder Connector.
PLL UNIT SIDE 1.7 (X2 Frequency Adj.} 1.8 (X3 Frequency Adj.) L9 (X4 Frequency Adi) X4 {35.733MHz Duplex TX Crystal) *3 (36.000MHz Simplex TX Crystal} X7 (33.
SECTION Vil CIRCUIT DESCRIPTION RECEIVER CIRCUITS ANTENNA SWITCHING CIRCUIT Signals from the antenna connector are fed fo the antenna switching circuit through Kuibyshev low-pass filter consisting of 126, 127, €91 ~ C94 in the PLL board. The antenna switching circuit employs a water wave switching circuit.
9 The amplified signals are fed to IC1. 1C1 is composed of the second local oscillator, second mixer, limiter amplifier, quadrature detector and active filter circuits. The second local oscillator oscillates 16.4458MHz with X1, and is fed to the second mixer with the first IF signals to convert into 455K Hz second IF signals. The second IF signals are put out from Pin 3, and fed to external ceramic filter F12 which has excellent selectivity, then fed to I1C1 (Pin b} again to amplify and detect.
TRANSMITTER CIRCUITS MIC AMPLIFIER CIRCUIT Audio signals from the microphone are fed to the limiter amplifier. consisting of 025 ~ 28, which octave response between 300H7 and 3K Hz. ‘The output of the limiter amplifier is similar to rectangular waves and includes harmonics. These harmonics are eliminated by the low-pass filter 029, which cuts kHz or higher. Filtered signals are fed to the VCO in the PLL board to make modulation.
0 PLL CIRCUITS LOCAL OSCILLATOR CIRCUIT The crystal oscillator O8 oscillates 33.1833MHz with X2 far receive, 36.000MHz with X3 for simplex transmit and 35.733MHz with X4 for duplex transmit, and the signal at three times this frequency, i.6.. 99.550MHz for receive, 108.000MHz for simplex transmit and 107.200MHz for duplex transmit, are taken from the collector of 08, and fed to the mixer of PLL circuit, tn the receive mode. R+5V is applied to D4 through R29, L7 and R33, and D4 is tuned ON and selects X2.
The programmable divider is also called the 1/N counter and the BCD value is N. The relationship between the operating frequency and the divide number N is: N (divide number of programmable divider) = (Receive frequency (MHz) — 216) /0.01 PREFERENCE FREQUENCY GENERATOR CIRCUIT Reference frequency generator 1C3 consists of a crystal oscillator and a high speed divider. X1 oscillates at 10.240MHz, which is divided by 2048. The kHz reference frequency is fed to phase detector 1C2.
2% The output signals are fed to tuning diode D1 of the VICE circuit as the control voltage for the VCO frequency set. VCO CIRCUIT The VCO (Voltage-Controlled Oscillator) is a Cockpits circuit using Q3, and oscillates in 110MHz range. The oscillator frequency s controlled by a DC voltage which is supplied from the loop filter to var actor diode D1. In the receive mode, R+5V is applied to D's anode through L1, and D2 is turned ON and shunts C20. Thus the free-run frequency of the VCO is lowered.
In the transmit mode; the base of Q23 is grounded through R53, the microphone and the PTT switch, and 023 is turned ON. Thus Q6 and Q7 are turned ON and T+5V is actuated, and supplied to the transmitter circuit. At the same time, T#5V turns 012 ON, and the power supply voltage is applied 10 the MIC amplifier circuit through Q12. In the receive mode, 023 is turned OFF and the bias voltage of Q9 ON.
SECTION IX TROUBLE-SHOOTING Your has been tested very carefully at the factory before shipping. The chart below has been designed to help you correct any problems which are not equipment malfunctions. If you are not able to locate the problem and/or solve it through use of this chart, please contact your dealer or ICON distributor for assistance. Problem Possible Cause Solution 1. Power does not come ON when the switch is turned. Bad connection of the power pack.
Problem Possible Cause Solution 2. No sound comes from the speaker. {Continued) SQUELCH setting is turned too far clockwise. External speaker (or earphone) is in use. The battery has been exhausted. Turn the SQUELCH CONTROL counterclockwise until noise can be heard and reset it just below the threshold. Check if the external speaker plug is inserted properly or if the external speaker cable is cut. Replace the battery with a new one or recharge it. 3. Sensitivity s fow and only strong signals are audible.
e B0 Problem Possible Cause Solution 5. No modulation. {When using external microphone.} Bad connection of the MIC connector. The MIC cable is cut. Check the connection of the MIC connector and correct any problems. Repair the disconnected or cut wire. .The receive mode functions properly and your signals are transmitted, but you are unable to make contact | with another station. (When desiring DUPLEX mode.) {(When desiring, SIMPLEX mode.) The DUPLEX/SIMPLEX Switch is in the CHIMP position.
SECTION 2. VOLTAGE CHARTS NOTE: Measuring instrument is a 50KQ/V multi meter. MAIN UNIT TRANSISTORS TRANSMIT RECEIVE TR No. BASE COLLECTOR EMITTER: BASE COLLECTOR [EMITTER | REMARKS GATE GATE, DRAIN SOURCE WATERGATE DRAIN SOURCE Q1 0 0 GND 0.75 1.2 GND 1.75 GND 0.7 14 GND GND 0.3 5.0 GND Q8 0 0.7 GND | O 0.8 GND Qg9 438 Q10 Q12 Q13 238 Q14 086 0 GND 0.6/0 7.8/0 GND SQL OFF/ON Q1s 0 7.5 Q 7.6/0 786 .
PLL UNIT TRANSISTORS TRANSMIT RECEIVE TR No.| BASE COLLECTOR EMITTER| BASE COLLECTOR EMITTER | REMARKS GATE GATE DRAIN SOURCE | GATE GATE DRAIN SOURCE f=220MHz Q2 0.7 0 GND 0.7 0 GND f= 220MHz GND 0.7 0.9 GND Q86 0.7 0.7 GND 0.7 0.7 GND Q1o 086 1.0 GND 0.5 0.8 GND 012 0 1.2 GND 0.7 0 GND Q13 Q14 Power HIGH Q15 05 82 GND a 8.
IN TRANSMIT MODE PIN No. UNIT 110 1 12013 1114 115116 117118 REMARKS; MAIN | fc1 download |0 jo |o MAIN | 1c2 legion o o 1o PLL 1C1 5012010 05010 Dignify = 220MH2 PLL IC2 . 158010 0 2.4 GRIND PLL 103 1012024 Tonne | 1e1 16157161 61 64 ojo 66100 major ICEBOAT only IN RECEIVE MODE UNIT LICE FIN No.
B SECTION -XH . OPTIONS We have prepared a variety of options for the transceiver in order to expand its use, 1. 2. BC-30 Nickel-Cadmium Battery Charger A convenient set-in type charger for Nickel-Cadmium power packs. Two charging rates provided high speed and regular rate. The charger is compatible with any type of Nickel-Cadmium power packs.
