PRELIMINARY – Owner’s Manual The following statement will be added here in the Owner’s Manual. FCC REQUIREMENTS The RPV516A portable radio must be properly licensed by the Federal Communications Commission (FCC) prior to use. Your local RELM dealer can assist you in meeting this requirement.
PRELIMINARY – Owner’s Manual
PRELIMINARY – Owner’s Manual
PRELIMINARY – Owner’s Manual
PRELIMINARY – Owner’s Manual
PRELIMINARY – Service Manual Catalog General P2 Specifications P3 Mode Combination P4 Circuit Description P5 Software Software Description P10 Test Description P15 RPV516A Circuit Diagram RPV516APCB RPV516APCB Component Diagram（ Diagram（Two layers Mech 1 and Mech 2 in PCB） PCB） DR• CHKD• APPD• 24
PRELIMINARY – Service Manual General This manual is intended for use by experienced technicians familiar with similar types of commercial grade communications equipment. It contains main required service information and data for the equipment. The following precautions are recommended for personal safety: 1． DO NOT transmit until all RF connectors are verified secure and any open connectors are properly terminated.
PRELIMINARY – Service Manual Main technical specifications General RPV516A(1) RPV516A(2) Frequency 136MHz～150MHz 150MHz～174MHz Channel 16 Channel space 25kHz / 12.5kHz Antenna impedance 50• Transmitter impedance 2KΩ Input voltage 7.2V DC Frequency stability ±2.5×10 TCXO 12.8MHz CPU clock Freq 7.3728MHz -6 Transmitter ±2.5×10 Frequency stability -6 Output power 4.0±0.5W Operating sensitivity 12±4mV Audio distortion ≤ 5% Modulation limiting ≤ 5kHz / 2.
PRELIMINARY – Service Manual Mode combination 1．Mode User mode: Turn on the power to enter. PC mode：Set and adjust with PC software or programmer. 2． Parts description: •.Antenna •.Channel (frequency) selector knob turn the knob to choose channel from 1~ 16•channel 16 may be set by distributor as scan channel•• •.LED light Lights red while transmitting, green while receiving a signal. Flashes red when the battery voltage is low, while transmitting. •.
PRELIMINARY – Service Manual Circuit Description 3． Frequency configuration The receiver utilizes double conversion. The first IF is 38.85MHz and the second IF is 450KHZ. The first local oscillator signal is supplied from the PLL circuit. The PLL circuit in the transmitter generates the necessary frequencies. Fig.1 shows the frequencies. Fig1.
PRELIMINARY – Service Manual Fig. 2. Receiver section configuration 2） First Mixer The signal from the RF amplifier is heterodyned with the first local oscillator signal from the PLL frequency synthesizer circuit at the first mixer (Q202) to create a 38.85 MHz first intermediate frequency (1st IF) signal. The first IF signal is then fed through two monolithic crystal filters (MCFs: XF200) to further remove spurious signals.
PRELIMINARY – Service Manual Fig.3. AF Amplifier and squelch 6） Receiving signaling QT/DQT 300 Hz and higher audio frequencies of the output signal from IF IC are cut by a low-pass filter (IC301). The resulting signal enters the microprocessor (IC403). IC403 determines whether the QT or DQT matches the preset value, and controls the MUTE and AFCO and the speaker output sounds according to the squelch results. 3.
PRELIMINARY – Service Manual The operating frequency is generated by Q4 in transmit mode and Q3 in receive mode. The oscillator frequency is controlled by applying the VCO control voltage, obtained from the phase comparator, to the varactor diodes (D2 and D4 in transmit mode and D1 and D3 in receive mode) . The T/R pin is set high in receive mode causing Q5 and Q7 to turn Q4 off, and turn Q3 on. The T/R pin is set low in transmit mode.
PRELIMINARY – Service Manual frequencies. The resulting signal goes to the VCO through the VCO modulation terminal for direct FM modulation. (See Fig. 6) 7） QT/DQT encoder A necessary signal for QT/DQT encoding is generated by IC403 and FMmodulated to the PLL reference signal. Since the reference OSC does not modulate the loop characteristic frequency or higher, modulation is performed at the VCO side by adjusting the balance. (See Fig. 6) •6.
PRELIMINARY – Service Manual Fig. 7. APC system 9） ANT switch and LPF The RF amplifier output signal is passed through a low-pass filter network and a transmit/receive switching circuit before it is passed to the antenna terminal. The transmit/receive switching circuit is comprised of D101, D102 and D103. D102 and D103 turned on (conductive ) in transmit mode and off (isolated) in receive mode.
PRELIMINARY – Service Manual turns on Q110 to protect transmitting final amplifier (Q107). 5•Power supply A 5V reference power supply [5M] for the control circuit is derived from an internal battery. This reference is used to provide a 5V supply in transmit mode [5T] ,a 5V supply in receive mode [5R] , and a 5V•supply common in both modes [5C] based on the control signal sent from the microprocessor. 6•Control system The IC403 CPU operates at 7.37MHZ.
PRELIMINARY – Service Manual RPV516A/TC RPV516A/TC368 /TC368 software specifications 一． Specifications• 1． Use mechanical knob to choose from 16 channels. Frequency VHF:136~150MHz•VHF:150~174MHz•UHF:400~420MHz•UHF:450~47 0MHz 2． Monitor 3． Auto power saving 4． Audio alarm 5． Auto squelch control (0~9 level)• 6． Timing 7． Channel space 25KHz/12.
PRELIMINARY – Service Manual （12） （13） Reset scan mode Scan priority 3． PC modify mode• Make settings through external programmer or PC program software: （1） Frequency stability （2） RF power （3） Low power alarm （4） Squelch•level 9&3• （5） CTCSS deviation•Wide/Narrow•• （6） DQT deviation•Wide/Narrow•• （7） Receive sensitivity•low•medium•high• 4． Wire Clone: Press MONI to turn on the power , enter wire clone mode 2 seconds later, press PTT, Begin cloning while red lights, finish while light goes out.
PRELIMINARY – Service Manual •RPV516A/TC368 channel frequency diagram (after setting): No 1 2 3 4 5 6 7 8 9 10 11 12 DR• Model RPV516 A(1) RPV516 A(2) TC368(1 ) TC368(2 ) Frequency(M Hz) 136.000~149. 995 150.000~173. 995 400.000~419. 995 450.000~469. 995 350.000~369. 995 370.000~389. 995 220.000~239. 995 240.000~259. 995 406.000~429. 995 144.000~147. 995 336.000~367. 995 268.000~395. 995 CHKD• Initial (MHz) 140.00 0 150.00 0 410.00 0 450.00 0 360.00 0 380.00 0 230.00 0 250.00 0 410.00 0 145.00 0 350.
PRELIMINARY – Service Manual 13 14 15 16 430.000~439. 995 438.000~449. 995 465.000~494. 995 490.000~519. 995 430.00 0 440.00 0 480.00 0 500.00 0 -38.85 -38.85 -38.85 -38.85 435.10 0 444.10 0 480.10 0 505.10 0 435.10 0 444.10 0 480.10 0 505.10 0 435.00 0 444.00 0 480.00 0 505.00 0 435.10 0 444.10 0 480.10 0 505.10 0 430.00 0 438.00 0 465.00 0 490.00 0 430.10 0 438.10 0 465.10 0 490.10 0 439.97 5 449.97 5 494.97 5 519.97 5 439.90 0 449.90 0 494.90 0 519.
PRELIMINARY – Service Manual 6． Manual Modify Mode• Press PTT and MONI simultaneously to turn on the power•enter manual modify mode out 3 seconds later.
Pin No.
45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 DR• NC NC NC NC NC NC NC NC NC NC VCCN APC VCC VREF AVSS NC NC NC NC TIBI I I I I I I I I I I O O I I I I I I I I PRELIMINARY – Service Manual NC NC NC NC NC NC NC NC NC NC Frequency output TX•auto frequency output RX•BPF tune output CPU input power 5V Connect with VCC Connect with VSS NC NC NC NC QT/DQT exterior circuit central point input CHKD• APPD• 41
PRELIMINARY – Service Manual RPV516 adjust description Use programmer or PC software to program RPV516, or by manual program , eg . To program RPV516A( refer to“RPV516/TC368 software description”for the manual program and mode settings•. 一． Instrument• 1• Synthesized test instrument 1 set 2• Scanner 1 set 3• 3A/10V power 1 set 4• Digital Voltmeter 1 set 5• 3A DC Ammeter 1 set •• Adjust• 1． Initialization：It is necessary to initialize the transceiver because there is useless data in EEPROM.
PRELIMINARY – Service Manual Adjust the receiver section： section：（enter manual mode） Measurement Item Condition Test equip Terminal 1:CH:RX center turn to channel 4 in manual mode 2. CH: RX LOW 4.Band-pass turn to channel 5 in filter manual mode Spectrum analyzer ANT . TP2 3.CH:RX HIGH turn to channel 6 in manual mode 1. CH:RX center Turn to channel 13 in manual mode dev : Wide 2. CH: RX center 5.Sensitivity Turn to channel 14 (Wide) in manual mode dev : Wide 3.
PRELIMINARY – Service Manual manual mode output : 125dBm closed Adjust the Transmitter Transmitter section： section： Measurement Item Test equip Condition Adjustment Terminal Parts Method Specificati ons/Remarks ANT PTT•up•MO NI•down• Adjust it to center frequency error•150Hz PTT•up•MO NI•down• Adjust it to:4.0•Po•4.8 W I•1.6A CH: TX center 8.Transimet Synthetical Turn to channel 1 in frequency test manual mode 1.CH:TX center Turn to channel 2 in manual mode 9.Power 2.
PRELIMINARY – Service Manual 1.CH: TX center, turn to channel 9 in manual mode Adjust it to:0.75kHz±50Hz Wide Adjust it to:0.35kHz±50Hz Narrow Adjust it to:0.75kHz±50Hz Wide Adjust it to:0.35kHz±50Hz Narrow 13.QT DEV 2.CH: TX center, turn to channel 10 in manual mode Synthetical test LPF:300Hz 1.CH: TX center, turn to channel 11 in manual mode ANT PTT•up•MO NI•down• 14.DQT DEV 2.CH:TX center, turn to channel 12 in manual mode Turn to channel 3 in Digtal 15.
