SECTION I DESCRY ON This transceiver employs a Phase Locked Loop Synthesizer which is capable of 30 kHz spaced full coverage operation between 146 MHz to 148 MHz. fn addition, the transmit frequency may: be increased or decreased by 600 kHz on each channel for use with repeaters.
Location: Where you place the transceiver in your automobile 15 ot critical and should be governed by convenience and accessibility: entirely, Since ‘the unit is S0l compact, many mobile possibilities ‘present: themselves. :In: general, the: motile ‘mounting bracket ‘will provide you with some guide a8 1o placement. Any place where it can be mounted with metal screws, bolts, or pop-rivets will work. . For fixed station use, the 1C-3PA AC power supply is 5o designed to'be o stand for the transceiver.
3.5 When adjusting your antenna, whether mobile ‘or fixed, by all means follow ‘the manufacturer's instructions:: There ‘are :some pitfalls to be aware of. For example; do fot attempt to adjust an antenna for lowest SWERVE when using a diode SWERVE meter not engineered for VHF applications: : Such: read tugs will invariably: have: error of 409 or more. Rather, use an in line watt meter similar to the Drake WV-As or Bird Model 23 with VHE cartridge.
10 Spare Crystal Socket ‘There are 4 spare crystal sockets besides the 7 installed crystals in'the 1O module. When the MHz Indicator shows 146, No. 8 socket is for “A™ on the 100 KHz Selector and No. 9 is for YR When the Indicator shows 147, No. 10 socket is for “A” on the 100 Kiz Selector and ‘No. 11 socket is for “B” ‘on the selector. Each crystal adds 10 channels with 30 KHz separation. The frequencies are: calculated as follows: Desired Operating Pres. €O, Freq. — 10,7 (MHz) 1 (MHz) = 9 For example.
€0 Spare Crystal Socket There is 2 spare crustal socket along with the 10 installed crystals in the CO module. The spare ‘socket is-for #C" on the 10 KHz Selector for both 146 and 147 MHz. This crystallizes 7 channels with 300 KHz separation: The frequencies are calculated as follows, f (MHz) = Desired Operating Fig. = (LO; ; Reg. x 9) = 10.7 (MHz) For example; if you desire to operate on 146.05 MHz £(MHz) = 146.05 (MHz) — 13,783 (MHz) x 9 = 10.
Front Control Volume Control: controls audio output level of the receiver. Sketch Control: controls the sketch threshold point of the receiver, Microphone Jack:: concepts 3 prong mike plug. S-RE Meter: reads'S signal strength in receive mode and relative RF output in transmit mode.
5.2 5.3 Initial Preparations: the microphones to the microphone jack. Connecticut the antenna 1o the antenna ‘coax connector. ‘Make:sure the coax line'is hitherto correct impedance (50 ohms) and is neither shorted nor open. ¢. Make sure the function switch sin the off position, then connect the power supply cord to the power supply jack. The red lead should be connected to the positive side of the power source and the black chad to the negative side.
Transmitting: a. Push the PTT (push to talk) button on the microphone and the transceiver will transmit: A red transmit indicator lamp comes on below 100 KHz Selector and the meter will provide an indication of relative power output of the ‘transmitter. The meddle will be on or near the eight mark on the meter scale. 2 Hold the ‘microphone about three inches from your mouth and speak ina normal voice. ‘Shouting ‘does not. increase ‘your communication range.
Module : The Local Oscillator frequency 1s used with the VCO frequency to form an intermediate frequency, which is compared: with the CO frequency in the Phase Detector circuit. Q1 18 crystallization whose base s connected to one of 7 crystals selected by switch Sol: Sol 1s:the: 100 KHz selector on the front: panel.
Abnormal operation “of the P.LL. circuit 18 probable with low power supply voltages. To avoid this the following credit is employed. Q3 is an N-gate Theorist. This is the programmable injunction transistor (PUT), which has the characteristics that a2 circuit is closed when ‘the anode voltage exceeds the gate voltage.
‘The signal from the microphone is amplified by Q@ and (02 (25C3725). fed to the divination limiter, which consists: of DI, D2 (Inns) and the active audio filter Q3 (28€372), and further amplified by Q4 (28K30) before hang fed to the modulation intuition the Mix unit. 6.8 EPS Module This circuit provides a source of regulated voltage jor all the circuits and control of output: power during antenna mismatch conditions; as described: below. : All the circuit voltages except: YGR and PA stage.
ALIGNMENT CHART (Chart 2) 16230 VOLTAGE | CHART MODULE : NO, NAME! BASE EMITTER [ COLLECTOR | DRAIN. ANY OTHERS RE Q1 38K4D BiG) 281G 7,210} RE a2 oSk 1G] 1183 8.0} AR at 280372 0.3 203 14 AE Q21260372 250372 Q41280372 7.0 AF 081 kiosk: oGl 280772 28372 08256373 92 &5 135 A 091250286 011250236 Q228K oia) iF 081 25c372 Q41250372 28C372 2see72 28C372 280372 Q91256372 28C372 Q21280372 28C372 Q21280372 Q351250372 25C784 Q2.1 250372 0.
