This manual is intended for use by experienced technicians familiar with similar types of communication
equipment. It contains all service information required for the equipment described and is current as of
the printing data.
User Safety Information
The following precautions are recommended for personnel safety:
z DO NOT transmit until all RF connectors are verified secure and any open connectors are properly
terminated.
z SHUT OFF and do not operate this equipment near electrical blasting caps or in an explosive
atmosphere.
z When in vehicles with an airbag, do not place a portable radio in the area over an airbag or in the
airbag deployment area.
z Do not expose the radio to direct sunlight for a long time nor place it close to a heating source.
z Do not use any portable radio with a damaged antenna. If a damaged antenna comes into contact
with your skin, a minor burn may result.
z When transmitting with a portable radio, hold the radio in a vertical position with its microphone
about 5 centimeters away from your mouth.
z If you wear a portable radio on your body, be sure to keep the antenna at least 2.5 centimeters away
from your head or body when transmitting.
z This equipment should be serviced by a qualified technician only.
- 1 -
Page 4
Brief Introduction
RPV516/RPU416 Brief Introduction
1. Mode
User mode: Turn on the power to enter the mode.
PC mode:Set and adjust radio data with PC software or programmer in this mode.
2. Parts description:
(1) Antenna
(2) Channel (frequency) selector knob
Turn the knob to choose channel from 1 to16 (Channel 16 can be set by the dealer as scan
function).
(3) LED indicator
Red LED glows while transmitting; green LED glows while receiving; red LED flashes when the
battery voltage is lower than the preset while transmitting.
(4) Power /Volume control knob
Turn the knob clockwise to turn on the power; turn the knob counter clockwise to turn off the power.
After the power is turned on, turn the knob to adjust the volume level.
(5) Speaker
(6) Microphone
(7) PTT (push to talk)
To transmit, hold down PTT and speak into the microphone; to receive, release PTT.
(8) Monitor key
Press the key to open squelch; release to close squelch.
(9) Speaker/microphone jack
(10) Belt clip
(11) Battery
- 2 -
Page 5
RPV516/RPU416 Circuit Description
Circuit Description
1. Frequency configuration
The receiver utilizes double conversion superheterodyne. The first IF is 38.85MHz and the second IF
is 450KHz. The first local oscillator signal is supplied by PLL circuit.
The PLL circuit in the transmitter generates the necessary frequencies. Fig.1 shows the frequencies.
RPV516 frequency range: RPV516 A: 150MHz—174MHz
RPU416 frequency range: RPU416 B: 400MHz—420MHz
RPU416 A: 450MHz—470MHz
ANT
ANTSW
MCF
RF
AMPAMP
38.85MHz
CF
450KHz
IF
SYSTEM
X3
multiply
AF
TCXO12.8MHz
SP
CC
B
PA
AMP
TX
AMP
RX
TX
VCO
MICPLL
AMP
MIC
Fig. 1. Frequency configuration
2. Receiver
The receiver employs double conversion superheterodyne.
1-a) Front end RF amplifier (RPV516)
The input signal of antenna is applied to an RF amplifier (Q203) after passing through a
transmit/receive switch circuit and a 3-grade low pass filter. The amplified signal is filtered through a
band pass filter (a 3-grade LC filter) to eliminate unwanted signal before it is applied to the first mixer.
The voltage of varactor is provided by MPU (IC403). (See Fig. 2-a)
ANT
CF200
D102
D103
BPF
L208-L210
RF AMP
Q203
BPF
L214L215
MIXER
Q202
MCF
XF200
IF AMP
Q201
IF.MIX
IC200
AF AMP
LPF.HPF
IC300
TUNE
X3
APC
B
IC403
MCU
1st Local OSC
(PLL)
TCXO
multiply
Q1
Fig. 2-a. Receiver section configuration
AF PA AMP
IC302
SP
WIDE/NARROW SW
Q303
B
CC
B
- 3 -
Page 6
RPV516/RPU416 Circuit Description
1-b) Front end RF amplifier (RPU416)
The input signal of antenna is applied to an RF amplifier (Q203) after passing through a
transmit/receive switch circuit and a 3-grade low pass filter. The amplified signal is filtered through a
band pass filter (a 3-grade LC filter) to eliminate unwanted signal before it is applied to the first mixer.
The voltage of varactor is provided by MPU (IC403). (See Fig. 2-b)
ANT
CF200
D102
D103Q203
B
L208-L211
TUNE
APC
IC403
MCU
RF AMPBPF
BPF
L214-L215
MIXER
Q202
1st Local OSC
(PLL)
MCF
XF201
IF AMP
Q201
IF.MIX
IC200
X3
multiplyTCXO
Q1
AF AMP
LPF.HPF
IC300
AF PA AMP
IC302
WIDE/NARROW SW
Q303
Fig. 2-b. 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 IF (intermediate
frequency) signal. The first IF signal is then applied to two monolithic crystal filters (MCFS: XF200) to
further remove spurious signal.
3) IF amplifier
The first IF signal is amplified by Q201, and then enters IC200 (IF processing IC). The signal is
heterodyned again with a second local oscillator signal within IC200 to create a 450KHz second IF
signal. The second IF signal is then fed through a 450KHz ceramic filter (CF200) to further eliminate
unwanted signals before it is amplified and FM detected in IC200.
4) AF amplifier
The recovered AF signal obtained from IC200 is amplified by IC300 (1/4), filtered by the IC300
low-pass filter (2/4) and IC300 high-pass filter (4/4), and de-emphasized by R303 and C306. The
processed AF signal is then passed to a WIDE/NARROW switch (Q303) and its output is applied to
an AF volume control and is amplified to a sufficient level to drive a loud speaker by an AF power
amplifier (IC302).
CC
SP
B
- 4 -
Page 7
RPV516/RPU416 Circuit Description
5) Squelch
Part of the AF signal from IC200 re-enters IC200, and the noise component is amplified and rectified
by a filter and an amplifier to produce a DC voltage corresponding to the noise level.
The DC signal is injected to the analog port of the microprocessor (IC403). IC403 compares the
voltage with the preset value and determines whether to output sounds from the speaker. IC403
sends a high level signal to the MUTE and AFCO lines and turns IC302 on through Q302, Q304,
Q305, Q306 and Q307. (See Fig.3)
FM IF IC200
IF AMPDET
DETHPF
BUSY
MUTE
IC403
MPU
AMP
AFCO
IC301
LPF
562676
TI
IC 300
AF AMPLPFHPF
Q15
W/N SW
Q302SWIC302
AF/PF AMP
Q307
SW
Q304.Q305.Q306
SW
SP
Fig. 3. AF amplifier and squelch
6) Receiving signaling
CTCSS/CDCSS
IC200 output signal is filtered by 300Hz low-pass filter (IC301) and the filtered signal is input to the
microprocessor (IC403). IC403 determines whether the CTCSS or CDCSS matches the preset value,
and controls the MUTE and AFCO and the speaker sounds output according to the squelch results.
TTS
IC200 output signal is filtered by IC8 and then applied to the microprocessor (IC403). IC403 compares
TTS with the preset value and controls MUTE and AFCO and speaker output according to squelch
results.
3. PLL frequency synthesizer
PLL circuit generates the first local oscillator signal for reception and the RF signal for transmission.
1) PLL
The frequency step of the PLL circuit is 2.5 or 6.25KHz. A 12.8MHz reference oscillator signal is
divided at IC1 by a mixed counter to produce 2.5 or 6.25KHz reference frequency. The voltage
controlled oscillator (VCO) output signal is buffer amplified by Q6, and then divided in IC1 by a
dual-module programmable counter. The divided signal is compared in phase with the 2.5 or 6.25KHz
reference signal in the phase comparator in IC1. The output signal from the phase comparator is
filtered through a low-pass filter and passed to the VCO to control the oscillator frequency. (See Fig. 4
of Next Page)
- 5 -
Page 8
C
PLL DATA
REF OSC
PLL IC IC1
5KHz/6.25KHz
I/N
COMPARATOR
I/M
5KHz/6.25KHz
PHASE
CHARGE
PUMP
RPV516/RPU416 Circuit Description
D2.4Q4TX VCO
LPF
D1.3Q3RX VCO
Q6
BUFF AMP
Q5.7
T/R SW
Q2
RF AMP
DD
C
B
12.8MHz
B
Fig. 4. PLL circuit
2) VCO
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. The outputs from Q3 and Q4 are amplified by Q6 and sent to the buffer amplifiers.
3) Unlock Detector
If a low level signal appears at the LD pin of IC1, an unlock condition occurs, and the DC voltage
obtained from D7, R6, and C1 causes the voltage applied to the UL pin of the microprocessor to go
low. When the microprocessor detects this condition, the transmitter is disabled, ignoring the
push-to-talk switch input signal. (See Fig. 5)
5C
R6
IC1
D7
LD
IC403
UL
PLL IC
C1
MPU
Fig. 5. Unlock detector circuit
4. Transmitter
1) Transmit audio
The modulation signal from the microphone is amplified by IC500 (1/2), and then passes through a
pre-emphasis circuit and a 300Hz low-pass filter (Q501 and Q502). The resulting signal goes to the
VCO for direct FM modulation. (See Fig. 6)
2) CTCSS/CDCSS encoder
A necessary signal for CTCSS/CDCSS encoding is generated by IC403 and FM-modulated 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 -
Page 9
RPV516/RPU416 Circuit Description
ANT
3) TTS encoder
The necessary signal for TTS encoding is generated by IC403. The signal is sent to IC500 (1/2), and
then applied to 3KHz low-pass filter (Q501 and Q502). The resulting signal is applied to VCO for direct
modulation (See fig. 6).
MIC
IC500(1/2)
MIC
AMP
Q503
SW
PREEMPHASIS
IC500(1/2)
TTS
IDC
Q501.502
LPF
(SPATTER FILTER)
IC403
TTS
MUTE
TO
CTCSS/CDCSS
VR501
MAX
DEV
VR500
BALANCE
D5.Q4
VCO
X1.IC1
PEFERENCE
OSC
Fig. 6. Transmit audio CTCSS/CDCSS
4-a) RF amplifier (RPV516)
The RF signal obtained from the VCO buffer amplifier Q100 is amplified by Q101 and Q102. This
amplified signal is passed to the power amplifier, Q102 and Q105, which consists of a 2-stage FET
amplifier and is capable of producing up to 4.5W of RF power (See Fig. 7-a).
AMP
Q103.Q104
B SW
TH100
Q101
5T
DET
SW
Q107
D
C
B
B
APC
5T
A
DRIVE AMP
Q102
APC
IC100
5T
5T
Q108
SW
Q109
SW
FINAL AMP
Q105
Q106
SW
ANT SW
D101LPF
ANT SW
D102.103
RX
Title
NumberRevisionSize
Fig. 7-a. APC system
4-b) RF amplifier (RPU416)
The RF signal obtained from the VCO buffer amplifier Q100 is amplified by Q101 and Q102. This
amplified signal is passed to the power amplifier, Q105 and Q107, which consists of a 2-stage FET
amplifier and is capable of producing up to 4W of RF power (See Fig. 7-b)
- 7 -
Page 10
RPV516/RPU416 Circuit Description
ANT
AMP
D
C
Q101.102
5T
DET
Q103.Q104
B SW
DRIVE AMP
Q105
APC
IC100
Q109
SW
FINAL AMP
Q107
ANT SW
D101LPF
B
B
APC
TH102
5T
A
SW
Q110
5T
Q108
SW
5T
Q106
SW
RX
ANT SW
D102.103
Title
NumberRevisionSize
Fig. 7-b. APC system
5) ANT switch and LPF
The RF amplifier output signal is passed through a low-pass filter network to filter the second
harmonic components and then applied to 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 is turned on (conductive) in transmit mode and off (isolated) in receive mode.
6) APC
The automatic power control (APC) circuit stabilizes the transmitter output power at a predetermined
level by sensing the drain current of the final amplifier Field Effect Transistor (FET). The voltage
comparison circuit compares the voltage obtained from the above drain current with a reference
voltage which is set using the microprocessor. The APC voltage is proportional to the difference
between the sensed voltage and the reference voltage output from IC100 (1/2). This output voltage
controls the gate of the FET power amplifier, which keeps the transmitter output power be varied by
the microprocessor which in turn changes the reference voltage and hence, the output power.
7) Temperature protection circuit
When the thermistor (TH102) reaches about 80℃, the protection circuit 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 power supply 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. This oscillator has a circuit that shifts the frequency according
to the EEPROM data.
- 8 -
Page 11
RPV516/RPU416 Software Specifications
Software Specifications
Ⅰ.Specifications:
1. Use mechanical knob to choose from 16 channels.
Frequency: VHF: 150~174MHz UHF: 400~420MHz UHF: 450~470MHz
2. Monitor
3. Auto power saving
4. Audio alarm
5. Auto squelch control (1~9 level)
6. Timing
7. Channel spacing 25KHz/12.5KHz (Wide/Narrow)
8. CTCSS, CDCSS and TTS encode
9. CTCSS, CDCSS and TTS decode
10. Busy channel lockout
11. Clock frequency offset
12. Scan
13. PC mode
14. PC adjusting mode
15. Wired clone
16. Manual adjusting mode
Ⅱ.Description:
1. User mode: conventional communications mode
2. PC mode:
The following parameters can be set by using external programmer or PC programming
software:
(1) Receive frequency & Transmit frequency
(2) Receive signaling & Transmit signaling
(3) Busy channel lockout
(4) Clock frequency offset
(5) TOT
(6) Squelch level
(7) Power saving
(8) Audio alarm
Turning on the power while holding down MONI, the radio enters wired clone mode after 2 seconds.
Press PTT, red LED blinks, and cloning begins; when cloning is completed, red LED goes out.
5. Model set mode:
(1) Complete the two SELF points (short circuit) on PCB, and turn on the power, two “Beeps” are
sounded.
(2) Set channel selector knob to corresponding position (1-16) according to the model (see initial
data table)
(3) Press [PTT] while holding down [MONI] to set the model. Channel data and settings are
initialized.
(4) Turn off the power, and disconnect the two SELF points on PCB to end the model settings. E.g.
RPV516A, its No. is 2, to initialize its model and channel data: short out the two SELF points
on PCB , and turn on the power, set the channel selector knob at CH2, and then press PTT
while holding down MONI, channel data of CH1,CH2,CH3 and CH4 is initialized as the
corresponding data of No.2. The receive and transmit frequencies of channel 5-14 are same
as channel 1, and the tone of CH5 and CH10 is 67.0Hz; CH6 and CH11 is 151.4Hz; CH7 and
CH12 is 250.3Hz; the code of CH8 and CH13 is 423(CDCSS); CH9 and CH14 is
-423(CDCSS). Channel 1-9 are wide, Channel 10-14 are Narrow. Turn off the power after
reset, disconnecting the two SELF points and restart the power to use the radio.
(5) Remarks:
The old data (frequency, CTCSS/CDCSS, channel function settings) will be deleted once the
new model is set, and part of functions will also be changed. Therefore, do not make this
operation unless it’s very necessary, such as changing the EEPROM, etc.
Initialization data of channel 1-4 is in the above table CH1-CH4, the adjusting settings are reset to initial data. Tx and Rx frequencies of CH5~CH14 are the
same with CH1. The tone of CH5 and CH10 is 67.0Hz; the tone of CH6 and CH11 is 151.4Hz; the tone of CH7 and CH12 is 250.3Hz; the code of CH8 and
CH13 is 423(CDCSS); the code of CH9 and CH14 is -423(CDCSS). CH1~CH9 are Wide, CH10~CH14 are Narrow.
- 11 -
Page 14
RPV516/RPU416 Software Specifications
6. Manual Adjust Mode:
Turn on the power while pressing PTT and MONI simultaneously,the radio enters manual adjust
mode after 3 seconds. Choose the settings by turning the channel selector knob to CH1-CH12
position; use PTT (upwards) or MONI (downwards) to adjust (Note: MIC jack shouldn’t be
connected with external cable while adjusting), CH1-CH12 positions are defined as follows:
(1) TTS deviation
(2) Transmit power output
(3) Low battery warning level
(4) Receive sensitivity (adjust at center frequency)
(5) Receive sensitivity (adjust at low frequency)
(6) Receive sensitivity (adjust at high frequency)
(7) Squelch level (level 9)
(8) Squelch level (level 3)
CH13-CH16 are used for adjusting transmitter and receiver. Press PTT to transmit; Press
MONI to choose wide or narrow, one Beep means Narrow, two Beeps mean Wide. CH13~
CH 16 are defined as follows:
(13) Center frequency (difference between transmit and receive frequency is 0.1MHz).
(14) Lowest frequency (difference between transmit and receive frequency is 0.1MHz).
(15) Highest frequency (difference between transmit and receive frequency is -0.075MHz).
(16) Center frequency: transmit with 250.3Hz CTCSS tone (difference between transmit and
receive frequency is 0.1MHz).
Note:
To enable or disable manual adjust mode: short out the two SELF points, turn on the power, and the
manual adjust mode is enabled; press [PTT], manual adjust mode is disabled. This mode is
suggested to be disabled after the adjustment is completed.
III. CPU:
CPU control M38034M4
Pin No. Port name I/O Function
1 TI I CTCSS/CDCSS input
2 BUSY I Input busy signal
3 BATT I Detect battery voltage
4 NC I NC
5 TO O Output CTCSS/CDCSS
6 BEEP O Beep output
7 2TN I TTS input
8 ENC0 I Input encode
9 ENC1 I Input encode
10 ENC2 I Input encode
11 ENC3 I Input encode
12 NC I NC
13 PTT I [PTT] input, connect with RXD
14 TXD O RS-232C output
15 RXD I RS-232C input
16 MONI I [MONI] input
17 SELF I Self-Program L: set up model
18 CNVSS I Connect VSS
19 RST I Reset input
- 11 -
- 12 -
Page 15
RPV516/RPU416 Software Specifications
20 INT0 I Power detection
21 NC I NC
22 XIN I Oscillator (7.3728MHz)
23 XOUT O Oscillator
24 VSS I Grounding
25 SHIFT O Clock frequency shift H: unlock
26 PABC O MOS FET power H: unlock
27 WNRC O Audio reference sensitivity L: narrow
28 WNTC O Max deviation control H: narrow
29 NC I NC
30 SDA I/O EEPROM data cable
31 SCL O EEPROM clock cable
32 UL I PLL unlock detector L: unlock
33 DT O Common data output
34 CK O Common clock output
35 LE O PLL IC H: lock up
36 5MC O Power control except CPU and EEPROM L: unlock
37 AFCO O AF amplifier H: unlock
38 RX O TX/RX VCO H: receive
39 GLED O Green light control H: light
40 RLED O Red light control H: light
41 SAVE O Power saving control H: power saving OFF
42 MUTE O mute control H: mic squelch L: AF squelch
43 5RC O Receiver power control L: unlock
44 5TC O Transmitter power control H: unlock
45 NC I NC
46 NC I NC
47 NC I NC
48 NC I NC
49 NC I NC
50 NC I NC
51 NC I NC
52 NC I NC
53 NC I NC
54 NC I NC
55 2TO O TTS output
56 APC O TX: APC output RX: BPF tune output
57 VCC I CPU power supply 5V
58 VREF I Connect with VCC
59 AVSS I Connect with VSS
60 NC I NC
61 NC I NC
62 NC I NC
63 NC I NC
64 TIBI I CTCSS/CDCSS exterior circuit central point input
- 13 -
Page 16
RPV516/RPU416 Adjustment Description
Adjustment Description
Program RPV516/RPU416 by using programmer or PC software, or by manual adjustment. Now explain
how to adjust RPV516/RPU416 in manual adjust mode (refer to “software descriptions” for the manual
adjust mode and model set).
Ⅰ. Instruments:
1. Communication analyzer 1 set
2. Spectrum analyzer 1 set
3. 3A/10V power source 1 set
4. Digital Voltmeter 1 set
5. 3A Ammeter 1 set
Ⅱ. Adjustment:
1.Initialization:
It is necessary to initialize the radio because there is no useful data in EEPROM after it’s
assembled. Short out the SELF points on PCB, turn on the power and two beeps sound, place the
channel selector knob at CH2 [RPV516A], CH3 [RPU416 B] or CH4 [RPU416A], then press [PTT]
while holding [MONI], the channel data and function settings are initialized. Please refer to the
chapter “software descriptions”.
2. Adjustment:
The adjustment of RPV516/RPU416, some are adjusted in user mode, some are in manual adjust
mode. Turn on the power, the radio enters the user mode. While pressing PTT and MONI
simultaneously, turn on the radio,the radio enters the manual adjust mode in 3 seconds. (Refer to
the manual adjust mode in chapter of “software descriptions”).
VCO Section:
Measurement Adjustment
Item Condition
1.Setting Power 7.5V
1.CH: TX HIGH 3.7V±0.1V
2.Transmit VCO lock
voltage
3.Receive VCO lock
voltage
2.CH: TX LOW
1.CH: RX HIGH 3.7V±0.1V
2.CH: RX LOW
Test equipment TerminalPart Method
Digital VoltmeterCV
TC1
TC2
Check
Check
Specifications/Re
marks
RPV516>0.7V
RPU416>1V
RPV516>0.7V
RPU416>1V
Note:
Whether VCO is unlocked can be checked in manual adjust mode. (Signal can be transmitted in manual
mode regardless of the VCO locked or unlocked).
- 14 -
Page 17
RPV516/RPU416 Adjustment Description
Adjust the receiver section: (in manual adjust mode)
Item Condition
1. CH:RX Center
Turn to channel 4 in
manual mode.
4. RF amplifier
BPF
5.Sensitivity
(Wide)
2. CH: RX Low Turn
to channel 5 in
manual mode.
3.CH:RX High 3Turn
to channel 6 in
manual mode
1. CH: RX Center.
Turn to channel 13 in
manual mode.
Channel spacing:
Wide
2. CH: RX Center
Turn to channel 14 in
manual mode.
Channel spacing:
Wide
3. CH: RX Center
Turn to channel 15 in
manual mode.
Channel spacing:
Wide
Measurement Adjustment
Test
equipment
Spectrum
analyzer
Communication analyzer
SSG output :
-118dBm
MOD:1KHz
DEV:±3KHz
FILTER:
0.3-3.4KHz
TerminalParts Method
TC201
TC202
(RPU416)
TC203
(RPU416)
PTT
ANT. TP2
ANT SP Check
(upwards)
MONI
(downwards)
PTT
(upwards)
MONI
(downwards)
Adjust the waveform to the
top, and the top is flat, the
bandwidth is about 10MHz,
the sign of RX central
frequency is at the middle
of the waveform.
Adjust the waveform to the
top, the sign of RX low
frequency is on the left of
the waveform top.
Adjust the waveform to the
top; the sign of RX high
frequency is on the right of
the waveform top.
Specifications/
Remarks
SINAD: 12dB
or higher
6. Sensitivity
(Narrow)
7. Squelch
1. CH: RX center
Turn to channel 13 in
manual mode.
Channel spacing:
narrow
2. CH: RX center
Turn to channel 14 in
manual mode.
Channel spacing:
narrow
3. CH: RX center
Turn to channel 15 in
manual mode.
Channel spacing :
narrow
1.CH: RX center
Turn to channel 7 in
manual mode
2. CH: RX center.
Turn to channel 8 in
manual mode.
Communication analyzer
SSG output:
-116dBm
MOD:1KHz
DEV:±1.5KHz
FILTER:
0.3-3.4KHz
Communication analyzer
SSG output :
-117dBm
Communication analyzer
SSG output :
-125dBm
ANT SP Check
Level 9
Level 3
ANT SP
PTT
(upwards)
MONI
(downwards)
Adjust to close the squelch.
Adjust to close the squelch.
SINAD: 12dB or
higher
Adjust squelch
level 9
Adjust squelch
level 3
- 15 -
Page 18
Adjust the transmitter section:
Item Condition
RPV516/RPU416 Adjustment Description
Measurement Adjustment
Test
equipment
TerminalParts Method
Specifications
/Remarks
8.Transmit
frequency
9. Power
10. Max
Deviation
CH: TX Center
Turn to channel
1 in manual
mode.
1.CH:TX Center
Turn to channel
2 in manual
mode.
2.CH: TX Low
Turn to channel 3
Press PTT
3.CH:TX High
Turn to channel 4
Press PTT
1. CH: TX Center
Turn to channel
13 in manual
mode. Channel
spacing: wide
Press PTT
.
2. CH: TX Center
Turn to channel
13 in manual
mode. Channel
spacing: narrow
Press PTT
Communication
analyzer
Communication
analyzer
Ammeter
Communication
analyzer
LPF:15KHz
AF:1KHz
120mV
ANT VR1
PTT
ANT
ANT
MIC
(upwards)
MONI
(downwards)
VR501
Adjust it to center
frequency
Adjust it to:
4.0 W≤Po≤4.8W
(RPV516)
3.7 W≤Po≤4.7W
(RPU416)
I≤1.6A
Adjust it to:
4.0 W≤Po≤4.8 W
(RPV516)
3.7 W≤Po≤4.7 W
(RPU416)
I≤1.6A
Adjust it to:
4.0 W≤Po≤4.8 W
(RPV516)
3.7 W≤Po≤4.7 W
(RPU416)
I≤1.6A
Adjust deviation to:
4.2KHz±100Hz
Check:
1.8KHz-2.2KHz
Error<150Hz
Wide
Narrow
11.MICSENS
1. CH: TX Center
Turn to channel
13 in manual
mode. Channel
spacing: wide
Press PTT
2. CH: TX Center
Turn to channel
13 in manual
mode.
Channel spacing:
narrow
Press PTT
Communication
analyzer
FILTER:
0.3-3.4KHz
AF:1KHz
+12mV
ANT
MIC
- 16 -
VR501
Check:
2.2KHz-3.6KHz
Check:
1.1KHz-1.8KHz
Wide
Narrow
Page 19
RPV516/RPU416 Adjustment Description
Item Condition
1.CH:TX center,
turn to channel 9
in manual mode
12.CDCSS/
CTCSS
13.CTCSS
Deviation
14.CDCSS
Deviation
2. CH: TX Center
Turn to channel 16
in manual mode.
Press PTT.
1. CH: TX Center
Turn to channel 9
in manual mode.
2. CH: TX Center
Turn to channel 10
in manual mode.
1. CH: TX Center
Turn to channel 11
in manual mode.
2. CH: TX Center
Turn to channel 12
in manual mode.
Measurement Adjustment
Test
equipment
Communication
analyzer LPF:
300Hz
Communication
analyzer
LPF:300Hz
TerminalParts Method
ANT VR500
PTT
ANT
(upwards)
MONI
(downwards)
Adjust VR500,
deviation tested on
condition 1 and
condition 2 are
consistent, the
difference≤20Hz
Adjust dev. to:
0.75KHz±50Hz
Adjust dev.
to:0.35KHz±50Hz
Adjust dev. to:
0.75KHz±50Hz
Adjust dev. to:
0.35KHz±50Hz
Specifications
/Remarks
67.0Hz
CTCSS
250.3Hz
CTCSS
Wide
Narrow
Wide
Narrow
15.Low
Battery
level
Turn to channel 3
in manual mode.
Adjust the power
supply voltage at
5.8V
16. TTS
deviation
Note:
In manual adjust mode, when channel selector knob is positioned at channel 1-channel12, MIC jack can’t connect with
external cables. After adjustment is completed, complete the two SELF points (short circuit),the radio enters model set
mode,then press PTT to disable the manual adjust mode.
CH: TX Center
Turn to channel 1
in manual mode.
Digital voltmeter
Communication
analyzer
LPF:15KHz
PTT
(upwards)
MONI
(downwards)
PTT
(upwards)
MONI
(downwards)
Adjust the level to
make the LED flash.
Adjust the dev. to:
3KHz±100Hz
Wide
- 17 -
Page 20
RPV516/RPU416 Disassembly for Repair
Disassembly for Repair
Separating the front cover assembly from the chassis
1. Remove the two knobs ① and three ring nuts ②.
2. Remove the two screws ③.
3. Expand the right and left sides of the bottom of the front cover assembly,lift the chassis, and remove
it from the front cover assembly.
4. Taking care not to cut the wire assembly connecting the speaker and chassis, separate the chassis
and the front cover assembly.
Removing the lever
Raise the lever on the bottom of the case, insert a small flat screwdriver into the space between the case
and lever, open the case carefully and lift the lever off.
Note: Do not force to separate the cover from the lever.
- 18 -
Page 21
RPV516/RPU416 Exploded View
Exploded View
- 19 -
Page 22
RPV516 parts List
r
RPV516 Parts List
Ref. No. Material CodeDescriptionAddress DestinationRef. No.Material Cod eDescriptionAddress Destination
11 Spring (Battery release)
12 Metal piece (Battery release)
13 Latch (Battery release)
14 Washer (SP)
15 Speaker
16 Washer (Microphone)
17 Waterproof ring (Aluminum chassis)
18 Battery connector (positive)
19 Waterproof rubber gasket (Jack)
20 Plus connector supporter
21 Aluminum chassis
22 Battery connector (negative)
23 Battery
24 Spring (belt clip)
25 Holder (belt clip)
26 Belt clip
27 Shaft
- 33 -
Page 36
Packing
RPV516/RPU416 Packing
Owner's Manual
Belt Clip
Adapter
Antenna
Portable Strip
Gift Box
Ch arg er
Battery
Main Unit
- 34 -
Page 37
q
Rx Section
ANT
Tx Section
12mVrmS390mVrms 120mVrms
MIC
RPV516 Level Diagram
-106.5dBm
XF200
R210
-103dBm1018mVrms
Q201
0.44Vrms0.8Vrms
Q101
C104
C212
Q102
175mVrms
VR
C116
23.5mVrms
AF 1kHz
0.63Vrms
Q307
SPIC302IC300IC200
4.5W
Q105ANT
L114
-116.5dBm
C137
-113dBm
L208
L221
center
RFIF 38.85MHz
-98dBm
5R
Q203
L203,L214
-103dBm
R217
Q202
1st Local
0.1Vrms
-104dBm
R211
SSG output level for obtaining 12dB/SINAD when injected to each point Modulate the AF level with a frequency of 1KHz and deviation of 1.5KHz(Narrow),
through a 470pF coupling capacitor. 3KHz (Wide). Then take the signal from the signal generator When the AF output
Measure the 1
IC500
st
Local level on a RF VTVM. has been adjusted to 0.63Vrms with the AF vol.
0.16Vrms
C34
Q4
C100
Q100
Q6
VR501
AF VTVM
Measure the audio frequency on an AF VTVM and radio frequency on a RF VTVM at high impedance . Set the MIC input to obtain a modulation factor of 60% with the transmit
uency at center and a modulation frequency of 1KHz.
fre
D5
RF VTVM
- 34 -
- 35 -
Page 38
Rx Section
RPU416 Level Diagram
Tx Section
-106.5dBm
XF201
R210
-103dBm 1018mVrms
Q201
C212
175mVrms
VR
23.5mVrms
Q307
AF 1kHz
ANT
L112
-116.5dBm
C145
5R
Q203
-98dBm
-103dBm
R217
L203,L214
-113dBm
L208
R224
center
RFIF 38.85MHz
Q202
1st Local
0.1Vrms
-104dBm
R211
SSG output level for obtaining 12dB/SINAD when injected to each point Modulate the AF level with a frequency of 1KHz and deviation of 1.5KHz
through a 470pF coupling capacitor. (Narrow), 3KHz (Wide). Then take the signal from the signal generator
Measure the 1
Measure the audio frequency on an AF VTVM and radio frequency on a RF VTVM at high impedance. Set the MIC input to obtain a modulation factor of 60%
with the transmit frequency at center and a modulation frequency of 1KHz.
16mVrmS430mVrms 310mVrms
st
Local level on a RF VTVM. when the AF output has been adjusted to 0.63Vrms with the AF vol.
0.15Vrms
0.44Vrms0.8Vrms
0.62Vrms
Q100
- 35 -
- 34 -
C106
Q101
RF VTVM
Q102
Q105ANT
C114
C119
Q107
MIC
IC500
C40
VR501
AF VTVM
Measure the audio frequency on an AF VTVM and radio frequency on a RF VTVM at high impedance. Set the MIC input to obtain a modulation factor of 60% with the transmit
frequency at center and a modulation frequency of 1KHz.