Ranger RCI-2950 User manual

RCI 2950 Service Manual
Table of Contents
●Specifications
●Controls and Connections
●Basic Programming Procedures
●Technical Analysis of the circuits
●Transistors Voltage Chart
●RCI SECRETS
●REPAIR TRICKS
DIAGRAMS
●Main PCB Schematic Diagram
●CPU PCB Schematic Diagram
●Chassis Exploded View Drawing
●Inter-connection Diagram
PCB Layouts and Parts
●(EPT295013Z)
●Main PCB Parts Layout Top View
●Main PCB Copper Side View
●LCD PCB (EPT295021Z)
●CPU PCB (EPT295043Z)
●MIC UP/DW (EPT295080Z)
●MIC Jack PCB (EPT295070Z)
●SWR PCB (EPT360040Z)
●VR (A) PCB RF/MIC VOL/SQ (EPT295050Z)
●VR (B) PCB RF/CAL (EPT295060Z)
●CH / Switch PCB (EPT295090A)
●MODE PCB (EPT295090Z)
●Push Button Switch PCB (EPT295031Z)
PARTS LISTS
●Capacitors
●Coils, Transformers, Crystals, Filters
●Resistors
●IC's, Transistors
●Diodes
●Wire, Jumpers, Connectors
●Chassis, Miscellaneous & Mechanical Parts
RADIO MODIFICATIONS
●MODIFY FOR 26 Mhz -32 Mhz
●MODIFY FOR 25 Mhz -33 Mhz
●Ham to CB Mode Modification
●INCREASE YOUR POWER ! !
●HEAVY SWINGER Mod (Modulation)
●TUNE UP/MOD
●Upgrading AM detection
●INCREASE AUDIO
●Add an Automatic SQUELCH
●BATTERY PROBLEMS
●CLARIFIER MOD
●CAR'S LIGHTER Install
●LCD & LEDS
●MIKE Wiring
●Protect From Polarity Inversions
●MOD FOR FASTER SCAN SPEED
●EXTERNAL S-METER
●TALK BACK MODIFICATION
●TONE MODIFICATION
ALIGNMENT PROCEDURES
●TX Alignment
●TX Alignment Locations
●RX Alignment
●RX Alignment Locations
●PLL Alignment
●PLL Alignment Locations
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RCI-2950 Specifications
Key Features
·Full Band Coverage - Covers the 10 Meter Amateur Band from 28.0000 to 29.6999 MHz.
·All Mode Operation - Operates on USB, LSB, CW, AM and FM.
·Brightness Control - Four Step LCD brightness control for easy viewing under any condition.
·Repeater Offset Switch - Gives you standard offsets for repeater operation.
·Programmable Frequencies - Allows you to program up to 10 individual frequencies. Includes battery backup.
·Built in Dual VFO - Choose steps of 10kHz, lkHz or 100Hz, manual or scan
·RIT - Receiver Incremental Tuning to fine tune the receive frequency up to +/- 3kHz.
·Squelch - Cuts off or eliminates receiver background noise in the absence of incoming signals.
·Noise Blanker - Greatly reduces repetitive impulse noise.
·RF Gain Control - Reduces the gain of the receiver under strong signal conditions to prevent overloading.
·RF Power Output Selector - Lets you select transmitting output power
·External Speaker Connection - Place a speaker anywhere for convenient listening.
·PA Mode - Use an external speaker for a mobile PA system.
·LCD Display - Large, easy to read backlit LCD display.
·Multi-Function LCD Meter - Indicates transmit power, receive signal strength, modulation, SWR Calibration and SWR.
Specifications
General
·Frequency Range: 28.0000~29.6999 MHz
·Tuning Steps: 100Hz, 1kHz, 10kHz, 100kHz, 1MHz
·Emission Types: USB, LSB(A3J), CW(A1), AM(A3), FM(F3)
·Frequency Control: Phase-Locked Loop Synthesizer
·Frequency Tolerance: 0.005%
·Frequency Stability: 0.001%
·Operating Temperature Range: 0 to 40 degrees C.
·Antenna Impedance: 50 Ohms
·Microphone: 400 Ohms, Dynamic PTT
·Speaker: 8 Ohms, 2 Watts
·Display: Digital Frequency, LCD
·Meter Function: RF Output, Receive Signal Strength, Modulation, SWR Calibration, SWR
·Power Requirements: 13.8 Volt DC Negative Ground
Transmitter
·Antenna Connector: UHF TYPE, 50 Ohm
·RF Transmit Modes: USB, LSB, CW, AM, FM
·RF Output Power: USB, LSB (25W); CW (8W); AM/FM (8W)
·Spurious Emissions: -50dB
·Carrier Suppression (SSB Modes): -50 dB
Receiver
·Sensitivity for 10dB SINAD: AM 0.5uV
·Sensitivity for 10dB SINAD: USB/LSB/CW 0.15uV
·Sensitivity for 12dB SINAD: FM 0.25uV
·Image Rejection Ratio: 65dB
·AGC Figure of Merit: SSB/CW/AM 80dB for 50mV for 10dB Change in Audio Output
·Audio Output Power: 2.5 Watts

RCI-2950 Controls and Connections
INTRODUCTION
This section explains the basic operating procedures for the RCI-2950/2970 amateur 10 meter mobile transceiver.
CONTROL & CONNECTIONS
1. FREQUENCY SELECTOR:
This control is used to select a desired transmit and receive frequency. It enables you to make a continuous tuning over the entire
range of the transceiver.
2. RF POWER CONTROL:
This control enables you to adjust RF power continuously over the range of 1 watt through 25 watts
(RCI-2970: 10 watts through 100 watts).
3. MIC GAIN CONTROL:
This control adjusts the microphone gain in the transmit and PA modes. This feature is designed for use in a
h-ambient noise environment or to maxize talk power.
4. ON/OFF VOLUME CONTROL:
Turn clockwise to apply power to the radio and to set the desired listening level.
5. SQUELCH CONTROL:
This control is used to control or eliminate receiver background noise in the absence of an incoming signal.
For maximum receiver sensitivity, it is desired that the control be adjusted only to the point where the receiver background noise
is eliminated. Turn fully counterclockwise then slowly turn clockwise until the receiver noise disappears. Any signal to be received
must now be slightly stronger than the average received noise. Further clockwise rotation will increase the threshold level which a
signal must overcome in order to be heard. Only strong signals will be heard at a maximum clockwise setting.

6. RF GAIN CONTROL:
This control is used to reduce the gain of the RF amplifier under strong conditions.
7. CLARIFIER CONTROL:
This control is used to fine tune the received signal for the maximum clarity in SSB or OW mode. It can adjust
the receive frequency about + / - 500 Hz, but does not affect the transmit frequency or the frequency display.
8. MODE SWITCH:
This switch allows you to select one of the six following operating modes: FM, AM, USB, LSB, CW, and PA.
9. NB/ANL BUTTON:
The noise blanker is very effective in eliminating repetitive impulse noise such as ignition interfer-
ence. In the ANL position, the automatic noise limiter in the audio circuits is activated.
10. ROGER BEEP BUTTON:
This button activates the ROGER BEEP Circuit when its function is selected.
11. SPLIT BUTTON:
This control enables you to split an operating frequency for FM Repeater operation.
12. PROGRAM BUTTON:
This button is used to program operating or scanning frequencies into memory. See the OPERATION section of the manual for
further details.
13. MANUAL BUTTON:
This is used to return the unit to manual mode.
14. SHIFT BUTTON:
This is used to select 100Hz, 1kHz, 10kHz, 100kHz or 1MHz frequency steps.
15. DIM BUTTON:
This button adjusts the display backlighting in four different steps to best match the environment.
16. SWR BUTTON:
This control is used to check SWR.

17. SCAN BUTTON:
This is used to scan frequencies in each band segment. The OPERATION segment of this manual provides
detailed information on using the SCAN control.
18. MEMORY BUTTON:
This button is used to program memory channels. Detailed information on how to use this control is provided in the OPERATION
section of this manual.
19. ENTER BUTTON:
This is used to program frequencies in memory. See the OPERATION section of this manual for more information on using this
control.
20. LOCK BUTTON :
This button is used to lock a selected frequency. Press it activate the switch. In this position, it disables the Frequency Selector
Control, up/down buttons on the front control panel, or remote up/down buttons on the microphone. Repressing the switch will
unlock the frequency.
21. UP/DOWN SELECTORS:
These buttons are used to move frequency upward or downward to select a desired frequency.
22. METER:
This meter indicates received signal strength, transmitter RF output power and SWR level.
23. LCD DISPLAY:
The LCD displays the frequency selected, functions and memory channel.
24. MIC JACK:
Accepts 6 pin female connector with a type Philmore T6160 and Calrad 30445 to be connected.

INTRODUCTION
This section explains the basic programming procedures for the RCI-2950/2970 amateur 10 meter mobile transceiver.
FREQUENCY SELECTION
Frequency selection in the RCI-2950/2970 can be accomplished using three of the following methods:
1. The first method of frequency selection is through the use of the (Shift) key and the and
arrows. To accomplish this, press the button until the cursor arrow is positioned under the digit of the frequency that
is to be changed. Then use the arrow to increase the number. If a decrease in frequency is desired, press the
arrow. Perform the steps described above for each digit of the frequency until the desired frequency is dispIayed in
the LCD display window.
2. The second method of frequency selection is accomplished using the button and the frequency select knob located
above the microphone jack. Use the SHF button in the manner described above to select the digit to
be changed. Then proceed to rotate the frequency select knob clockwise to increase the frequency. Rotate the frequency select
knob counterclockwise to decrease the frequency.
3. The third method of selecting the operating frequency of the radio is through the use of the button and the channel
Up and Down button located on the microphone Frequency selection by this method is accomplished in the same manner as with
the and arrows on the key pad. The only difference is that the channel Up and Down buttons on the
microphone are used.
While in receive mode, once a signal has been detected on a particular frequency, it may be necessary to slightly change the
frequency to provide the best audio through the speaker. This can be accomplished by rotating the clarifier control to vary the
frequency by ± 0.5 kHz. After this fine tuning has been accomplished, press the button to lock in the frequency at the
point of best reception.
FREQUENCY SCANNING
Frequency scanning can be achieved using one of two methods: the first method involves the scanning of pre-programmed
memory channels; the second method will permit the user to scan all frequencies between a preset upper and lower scan limit.
Both methods of frequency scanning follow.
All Frequency Scanning
To allow All Frequency Scanning, one must first program the upper and lower scanning limits. The scan limits are simply the
highest and lowest frequencies that will be scanned. To program these limits, perform the following steps:
1. Press the (Program) key.
2. Press the key. (“PRG SCAN+” should appear in the lower right corner of the display window.

3. Using the key and the and arrows, select the upper scan limit, then press .
4. Press the key again. (“SCAN -“ should appear in the display window.)
5. Using the key and the and arrows, select the lower scan limit, then press .
The upper and lower scan limits have now been programmed. To activate the scan feature, return the radio to manual operation
and press the button. If the display shows ‘SCAN the radio will scan from the lower limit to the upper limit. If “SCAN -‘
is displayed, the unit will scan from the upper limit to the lower limit. To change from SCAN + to SCAN - or vice versa, press
.
NOTE: When programmed, the upper and lower scan limits will also act as the upper and lower operating limits of the radio. The
radio cannot now be programmed to operate above or below the scan limits.
Memory Scanning
The RCI-295012970 has 10 non-volatile (i.e* memory resident) memory locations which can be programmed with any available
frequency within the operating band of the radio. The scan function of the unit can be programmed to scan these memory
channels. The radio will then scan only those memory channels which have been programmed.
The first step in utilizing the memory scan function is to program the desired frequencies into the radio memory. This can be
accomplished by performing the following steps:
1. With the radio operating in the manual mode, press the (Program) key.
2. Press the (Memory) key. “PRG” should be displayed in the lower right-hand corner of the LCD display window. In
the upper left portion of the display, “MEMORY” should be displayed. Directly below MEMORY, a number between 0 and 9 will be
displayed. This number represents the memory location currently being displayed. Pressing the key will increase the
memory counter to the next memory location and the contents of that memory location will be displayed.
3. Using the key and the and arrows, enter the frequency to be stored in the memory
location displayed. After the desired frequency has been entered, press .
4. Repeat steps 2 and 3 for all of the memory locations to be programmed.
5. After all desired memory locations have been programmed with frequencies, return the unit to the manual mode of operation by
pressing the key.
6. To initiate memory scanning, press and then press . As previously discussed, the display will show
“SCAN + “ or “SCAN -“ to indicate whether the radi0 is scanning from the lowest or the highest merory location or vice versa.

7. To return the radio to normal (non-scanning) operation, press the key.
OFFSET FREQ. OPERATION
The RCI-2950/2970 has an offset or split frequency feature that will permit the radio to be operated in a half-duplex mode This
will allow the user to talk on FM repeaters operating in the 10 Meter band. (NOTE The FM repeaters may require a sub-audible
(CTCSS) tone be transmitted to gain access to the repeater. The RCI-2950 is not factory-equipped with a CTCSS encoder/
decoder.) The split frequency function offsets the transmitter frequency either above or below the receive frequency by a user
programmable amount. In the following example, programming of a 100kHz offset will be described. Before attempting to program
the offset frequency, ensure that the radio is operating in the manual mode by pressing the key.
1. Press the key.
2. Press the key. The LCD display window will display “00000” with “PRG” and “SPLIT” being displayed in the lower
left-hand corner.
3. Using the key and the and arrows as described earlier, program the display to read
“010000.”
4. Press . A 100kHz offset has now been programmed into the radio.
5. Return the radio to manual operation by pressing the key.
6. Using the key and the and arrows as described previously, set the radio for the desired
receive frequency.
7. Press . In the lower right corner of the display, either “SPLIT + “or “SPLIT -“ will be displayed. If SPLIT + is
displayed, the transmitter will be offset 100kHz above the receive frequency when keyed. If SPLIT - is displayed, the transmitter
will be offset 100kHz below the receive frequency.
9. NOTE: When the transmitter Is keyed, the frequency display will change to show the frequency being transmitted.
8. To return the radio to simplex operation (i.e, same transmit and receive frequency), press the key.

Technical Analysis of the RCI 2950, RCI 2970, RCI 2990, Saturn Turbo circuitry
The first striking element of the RCI is the complex frequency synthesizer. As most of the CB rigs use a + 10 Khz
step , the RCI uses a 100 times thinner 100 Hz step.
The brain of the RCI is the Microprocessor. The microprocessor is hold by the small board located behind the LCD
display. This board rules the rig. It is a double sided board which holds a battery, an alignment of 2.54mm
connectors, a voltage regulator (5V - MC7805) on its back. The regulator feeds all the digital components, a
network of internal resistors. On the same side of the board, you can find a buzzer and a lithium battery which is
here to keep the memories when the rig is switched off. Note that, in the latest versions of RCI rigs, the lithium
battery has been replaced by a capacitor.
The other side of the board holds 3 CMS chips, a double Op-Amp (5223), a box containing 6 inversors gates
(buffers) CD4069. This last one is controlling the 6 digits of the display. This side of the board also holds a 64
pins CMS chip, driven at 4 Mhz by a crystal, which is a CMOS circuit. It owns a ROM of 2 K, Four 4 bits registers,
a 8 bit timer, a serial 8 bits communication interface, 24 Input/Output. Everything is controlled by 10
microseconds cycles. A controller-Driver of Liquid Display Boards is supervising all the needed display cycles on
the 24 lines of the LCD segments to display the 6 numbers (7 segments by number) on the orange screen. The
microprocessor is having very low consumption characteristics: less than 900 µA.
The programming of the microprocessor is done at factory. All the functions and the frequencies range are
stored into the ROM. A jumper allows us to change the frequency range. All the main informations are send to
the frequency synthesizer by a limited amount of links: clock signals (CLK), transfers (LAT), serial data (DATA).
All these informations are not given by the schematic diagram but were useful to know. Let's pay a visit to the
main board.
The Frequency Synthesizer is complex because of the 100 Hz resolution. It owns a dozen of integrated
circuits: a programmable divider (IC17:7925 Sony) addressed in serial mode by the microprocessor, a first VCO
(IC8: TA7310 Toshiba), two phase comparers (IC5-IC7 TC5081 Toshiba), three mixers (IC9-IC10-IC14:
TA7310), an oscillator-divider driven by a 10.250 Mhz crystal. This part of the rig generates 2 different
frequencies: in RC mode to get an infradyne pulse of the first conversion (RX QRG - Interm.QRG of 10.695 Mhz)
and in TX, the necessary to produce a supradyne ( Interm.QRG of 10.695Mhz + FVCO). Depending of the TX
mode, in AM/FM, the Q44 oscillator is controlled by X3 (10.695 Mhz). In SSB and CW, there is a 1500 Hz jump
(+ 1500 Hz in USB and CW and -1500 Hz in LSB).
The transmit circuits follow the frequency synthesizer. It has a HF mixer (IC20 : SO42P Siemens). It is
adapted in large band conditions by a set of varicaps D93-D94-D95. The result of the mixing is then applied to a
band filter (L43-L46), amplifier in voltage by a transistor Q50: 2SC1730L. The output level of this TR is enough
to control the pre-driver (Q49: 2SC1973). The pre-driver, via L41, excites two finals in parallel (Q46-Q47:
2SC2312). They are followed by a low-pass filter in PI (L32-L31) and associated capacitors C243-247-251).. And
then a hi-pass filter follows (L33/C248-VC3). A line of measurement of the SWR is present in the form of a
vertical mini circuitry board, plugged between the TX output and the antenna plug. All the 3 power transistors
are biased VR11. In AM and FM, the mixer IC20 adds the VCO QRG to 10.695 (Q44). In SSB and CW, it is the
output of the crystal filter that is added.
The receiver is classical: superheterodyne with 2 IF conversions. It is very similar to the one of most cb rigs.
There are output stages: HF Amp (Q18: 2SC1674), transfo L8, first mixer Q19: 310), L9-L11 filter, the IF output
by L12,L13,L14. What strikes is the presence of varicaps D19,D23,D24 which works to produce a perfect tune in
this large band rig. The band filtering is also perfect. It is done by two combined transfos linking the HF amp to
the mixer. The ceramic IF filter FL2: 10.995 Mhz is attacked by L14. The a second stage of IF Q8 is feeding the
second IF filter FL3 455 Khz. The first following TR loads Q5. Then Q10 & Q11 produce a Hugh gain before the
first IF transfo L6. The follow AM and FM demodulators. In AM you have a diode circuit to detect and gain control
(D11-D12). The Op-Amp IC1: LM324 follows. IC2, is the discriminator (UPC1028H). It handles the FM.
In SSB, the signal from the first mixer is bandwidth reduced by FL3 then applied to the first amplification IF
stage Q20. A high gain amp follows Q21-Q22-Q23. The audio output is controlled by a classical audio amp IC19
(TA7222P)

The noise blanker is very good. It is composed of 6 stages with at least 7 TR and 3 diodes assuming the
amplification of HF interference coming from the first QRG changer.
The AM is using a classical and reliable technology: a ballast PNP transistor (Q51).
In FM, we can find the old good MC14558P (IC16) which handles modulation of the mike before exciting the
varicap of the VCO to produce frequency excursions.
In SSB, IC16 pre-amplifies the mike signals. It is followed by IC3 (AN612) which produces a double side band
modulation (DSB). Once going through the crystal filter, the un-wanted side band is eliminated.
You now know more about the hiddent componentes of your RIG.
www.radioaficion.com

Transistor Voltage Chart
Ref # Function Part # LOC B C E
Q1 2SC1675L NPN B-3 0.00NB Off 0.00 NB Off 0.00 NB Off
1.77NB On 7.67 NB On 1.06NB On
Q2 2SC1675L NPN C-2 0.00NB Off 0.00 NB Off 0.00NB Off
0.71NB On 2.09 NB On 0.00NB On
Q3 2SC945 NPN C-3 0.00NB Off 0.00NB Off 0.00NB Off
2.09NB On 7.76 NB On 1.45NB On
Q4 2SC945 NPN B-2 0.00NB Off 8.01 NB Off 0.01NB Off
0.02NB On 8.01 NB On 1.06NB On
Q5 2SC945 NPN C-3 0.00NB Off 7.37 NB Off 0.01NB Off
0.01NB On 7.37 NB On 0.03NB On
Q6 2SA733 PNP C-2 7.36NB Off 0.00 NB Off 8.01NB Off
7.36NB On 0.00 NB On 8.01NB On
Q7 2SC945 NPN C-2 0.00NB Off 0.00 NB Off 0.00NB Off
0.00NB On 0.01 NB On 0.00NB On
Q8 2SC1674 NPN D-2 1.18 AM RX 6.93 AM RX 0.48AM RX
0.02 AM TX 0.03 AM TX 2.44AM TX
1.18FM RX 6.93FM RX 0.48FM RX
0.01FM TX 0.02FM TX 2.44FM TX
1.30SSB RX 7.60 SSB RX 2.38SSB RX

0.01SSB TX 0.02 SSB TX 2.44SSB TX
Q9 2SC1675 NPN D-3 0.71AM / FM RX 3.04AM / FM RX 0.00AM / FM RX
0.01AM / FM TX 0.03AM / FM TX 0.00AM / FM TX
0.82 SSB RX 0.03 SSB RX 0.00SSB RX
0.81SSB TX 0.02 SSB TX 0.00SSB TX
Q10 2SC1675 NPN D-4 3.03AM /FM RX 5.76AM / FM RX 2.26AM / FM RX
0.02AM / FM TX 0.02AM / FM TX 0.01AM / FM TX
0.03SSB RX 8.02 SSB RX 0.00SSB RX
0.02SSB TX 0.02 SSB TX 0.01SSB TX
Q11 2SC1675L NPN D-4 2.26AM / FM RX 5.49AM / FM RX 1.52AM / FM RX
0.01AM / FM TX 0.02AM / FM TX 0.01AM / FM TX
0.00 SSB RX 8.02 SSB RX 0.01SSB RX
0.01 SSB TX 0.02 SSB TX 0.01SSB TX
Q12 2SA733 PNP B-4 8.02NB Off 0.00 NB Off 8.06NB Off
7.35NB On 8.01 NB On 8.06NB On
Q13 2SC945 NPN B-4 0.00AM / FM RX -0.25AM / FM RX 0.00AM / FM RX
0.01AM / FM TX -0.24AM / FM TX 0.00AM / FM TX
0.71 SSB RX 0.01 SSB RX 0.00 SSB RX
0.71 SSB TX 0.01 SSB TX 0.00SSB TX
Q14 2SC945 NPN B-4 0.70AM / FM RX 0.01AM / FM RX 0.00AM / FM RX
0.71AM / FM TX 0.02AM / FM TX 0.00AM / FM TX

0.01 SSB RX 0.11 SSB RX 0.00 SSB RX
0.01SSB TX 0.01 SSB TX 0.00SSB TX
Q15 2SC945 NPN E-4 0.01AM / FM RX 0.02AM / FM RX 0.00AM / FM RX
0.01AM / FM TX 0.01AM / FM TX 0.00AM / FM TX
0.70 SSB RX 0.01 SSB RX 0.00 SSB RX
0.71SSB TX 0.01 SSB TX 0.00SSB TX
Q16 2SC945 NPN E-5 1.26AM / FM RX 5.04AM / FM RX 0.68AM / FM RX
1.26AM / FM TX 5.05AM / FM TX 0.68AM / FM TX
1.26 SSB RX 5.01 SSB RX 0.68 SSB RX
1.26SSB TX 5.01 SSB TX 0.68SSB TX
Q17 2SC945 NPN B-2 0.00AM / FM RX 0-0.01AM / FM RX 0.00AM / FM RX
0.76 SSB TX 0.02 SSB TX 0.00SSB TX
Q18 2SC1674 NPN C-2 2.15 AM RX 7.73 AM RX 1.41AM RX
0.02 AM TX 0.03 AM TX 0.01AM TX
2.15 FM RX 7.73 FM RX 1.41FM RX
0.03 FM TX 0.08 FM TX 0.01FM TX
2.16 SSB RX 7.74 SSB RX 1.41 SSB RX
0.01 SSB TX 0.02 SSB TX 0.01SSB TX
Q19 J310 FET D-3 0.03AM / SSB RX 7.95AM / SSB RX 1.89AM / SSB RX
0.01AM / SSB TX 0.02AM / SSB TX 0.03AM / SSB TX
0.00 FM RX 7.95 FM RX 1.90FM RX

0.01 FM TX 0.07 FM TX 0.07FM TX
Q20 2SC1674 NPN D-4 0.95 AM RX 0.24 AM RX 0.23AM RX
3.41 AM TX 3.02 AM TX 7.34AM TX
0.95 FM RX 0.24 FM RX 0.23 FM RX
1.66 FM TX 1.19 FM TX 7.35FM TX
1.60 SSB RX 6.69 SSB RX 0.85 SSB RX
3.40 SSB TX
3.42 With MOD 7.11 SSB TX 7.13 With MOD 7.34 SSB TX 7.36 With MOD
Q21 2SC1675 NPN D-4 0.22AM / FM RX 1.74AM / FM RX 0.00AM / FM RX
0.02AM / FM TX 0.03AM / FM TX 0.00AM / FM TX
0.73 SSB RX 3.43 SSB RX 0.00 SSB RX
0.01 SSB TX
0.03 With MOD 0.02 SSB TX 0.04 With MOD 0.00 SSB TX
Q22 2SC1675 NPN D-4 1.74AM / FM RX 0.93AM / FM RX 0.92AM / FM RX
0.03AM / FM TX 0.40AM / FM TX 0.02AM / FM TX
3.43 SSB RX 6.52 SSB RX 2.66 SSB RX
0.02 SSB TX
0.04 With MOD 7.09 SSB TX 7.16 With MOD 0.01 SSB TX 0.03 With MOD
Q23 2SC1906 NPN D-4 3.92AM / FM RX 7.78AM / FM RX 0.23AM / FM RX
0.02AM / FM TX 0.02AM / FM TX 0.02AM / FM TX
2.65 SSB RX 6.10 SSB RX 1.90 SSB RX
0.01 SSB TX
0.02 With MOD 0.02 SSB TX 0.04 With MOD 0.01 SSB TX 0.03 With MOD
Q24 2SC945 NPN D-2 0.70 AM RX 0.01 AM RX 0.00AM RX

0.71 AM TX 0.02 AM TX 0.00AM TX
0.01 FM RX 0.18 FM RX 0.00FM RX
0.02 FM TX 0.05 FM TX 0.00FM TX
0.01 SSB RX 0.01 SSB RX 0.00 SSB RX
0.01 SSB TX
0.03 With MOD 0.02 SSB TX 0.20 With MOD 0.00 SSB TX
TR25 2SA733 PNP
D-1
ANL
8.01 AM RX ON
6.72 OFF
ANL
0.16 AM RX ON
7.38 OFF
ANL
8.05 AM RX ON
7.38 OFF
ANL
8.02 AM TX ON
6.73 OFF
ANL
0.22 AM TX ON
7.38 OFF
ANL
8.06 AM TX ON
7.39 OFF
ANL
0.01 FM RX ON
0.01 OFF
ANL
0.01 FM RX ON
0.01 OFF
ANL
0.01 FM RX ON
0.01 OFF
ANL
0.02 FM TX ON
0.02 OFF
ANL
0.02 FM TX ON
0.02 OFF
ANL
0.02 FM TX ON
0.02 OFF
ANL
0.01 SSB RX ON
0.01 OFF
ANL
0.01 SSB RX ON
0.01 OFF
ANL
0.01 SSB RX ON
0.01 OFF
ANL
0.02 SSB TX ON
0.02 OFF
ANL
0.01 SSB TX ON
0.01 OFF
ANL
0.01 SSB TX ON
0.01 OFF
Q26 2SC945 NPN
D-1
AM / FM / SSB RX
2.82 AM / FM / SSB RX 7.19 AM / FM / SSB RX 2.28
AM / FM / SSB TX
2.84 AM / FM / SSB TX 7.20 AM / FM / SSB TX 2.29
Q27 2SC1675 NPN
C-5
AM / FM / SSB RX
3.44 AM / FM / SSB RX 5.93 AM / FM / SSB RX 2.70
AM / FM / SSB TX
3.45 AM / FM / SSB TX 5.94 AM / FM / SSB TX 2.71

Q28 2SC1675 NPN
D-4
AM / FM / SSB RX
0.72 AM / FM / SSB RX 4.36 AM / FM / SSB RX 0.00
AM / FM / SSB TX
0.72 AM / FM / SSB TX 4.37 AM / FM / SSB TX 0.00
Q29 2SC1675 NPN E-6 0.01 AM RX 7.95 AM RX 0.00AM RX
0.02 AM TX 7.96 AM TX 0.00AM TX
0.75 FM RX 0.02 FM RX 0.00FM RX
0.79 FM TX 0.07 FM TX 0.00FM TX
0.01 SSB RX 7.94 SSB RX 0.00 SSB RX
0.01 SSB TX 7.95 SSB TX 0.00SSB TX
Q30 2SC945 NPN F-1 0.71AM / FM RX 0.02AM / FM RX 0.00AM / FM RX
0.72AM / FM TX 0.03AM / FM TX 0.00AM / FM TX
0.01 SSB RX 2.95 SSB RX 0.00 SSB RX
0.01 SSB TX
0.03 With MOD 2.89 SSB TX 2.91 With MOD 0.00
Q31 2SA733 PNP B-3 8.02 AM RX 0.11 AM RX 8.06AM RX
8.02 AM TX -0.34 AM TX 8.06AM TX
8.02 FM RX 0.11 FM RX 8.06FM RX
8.02 FM TX -0.39 FM TX 8.06FM TX
8.02 SSB RX -0.11 SSB RX 8.06 SSB RX
8.02 SSB TX
6.95 With MOD -0.43 SSB TX 5.46 With MOD 8.05 SSB TX 7.57 With MOD
Q32 2SA945 NPN
F-6
AM / FM / SSB RX
0.71 AM / FM / SSB RX 0.01 AM / FM / SSB RX 0.00

AM / FM / SSB TX
0.01
0.50 With MOD
AM / FM / SSB TX
0.01 AM / FM / SSB TX 0.00
Q33 2SC945 NPN
E-6
AM / FM / SSB RX
0.24 AM / FM / SSB RX 0.25 AM / FM / SSB RX 0.00
AM / FM / SSB TX
0.57
0.58 SSB MOD
AM / FM / SSB TX
0.72
0.74 SSB MOD
AM / FM / SSB TX
0.00
Q34 2SC945 NPN
F-6
AM / FM / SSB RX
0.00 AM / FM / SSB RX 1.32 AM / FM / SSB RX 0.00
AM / FM / SSB TX
0.00
0.01 SSB MOD
AM / FM / SSB TX
0.01
0.94 AM/SSB MOD
AM / FM / SSB TX
0.00
Q35 2SA733 PNP
C-5
AM / FM / SSB RX
8.02R.B. Off AM / FM / SSB RX 3.05R.B. Off AM / FM / SSB RX 8.06R.B. Off
AM / FM / SSB TX
8.03R.B. Off AM / FM / SSB TX -0.70R.B. Off AM / FM / SSB TX 8.07R.B. On
AM / FM / SSB RX
7.41R.B. On AM / FM / SSB RX 8.05R.B. On AM / FM / SSB RX 8.06R.B. On
AM / FM / SSB TX
7.42R.B. On AM / FM / SSB TX 8.06R.B. On AM / FM / SSB TX 8.07R.B. On
Q36 2SC945 NPN
C-6
AM / FM / SSB RX
0.01 AM / FM / SSB RX 8.03 AM / FM / SSB RX 0.01
AM / FM / SSB TX
0.02 AM / FM / SSB TX 8.04 AM / FM / SSB TX 0.35
Q37 2SA1282 PNP
D-6
AM / FM / SSB RX
7.36 AM / FM / SSB RX 0.02 AM / FM / SSB RX 8.06
AM / FM / SSB TX
8.05 AM / FM / SSB TX 8.04 AM / FM / SSB TX 0.35
Q38 2SA1282 PNP C-6 8.02AM RX 0.00AM RX 8.06AM RX
7.27AM TX 7.95AM TX 8.05AM TX
8.02 FM/SSB RX 0.00 FM/SSB RX 8.06 FM/SSB RX

7.28 FM/SSB TX 7.96 FM/SSB TX 8.04FM/SSB TX
Q39 2SC945 NPN
A-2
AM / FM / SSB RX
0.63 AM / FM / SSB RX 0.05 AM / FM / SSB RX 0.00
AM / FM / SSB TX
0.01 AM / FM / SSB TX 8.04 AM / FM / SSB TX 0.00
Q40 2SA1282 PNP
A-1
AM / FM / SSB RX
7.54 AM / FM / SSB RX 0.28 AM / FM / SSB RX 8.05
AM / FM / SSB TX
7.35 AM / FM / SSB TX 8.04 AM / FM / SSB TX 8.06
Q41 2SC945 NPN
B-1
AM / FM / SSB RX
0.00 AM / FM / SSB RX 0.29 AM / FM / SSB RX 0.00
AM / FM / SSB TX
0.01 AM / FM / SSB TX 3.15 AM / FM / SSB TX 0.00
0.70 CW Mode RX 0.01 CW Mode RX 0.00CW Mode RX
0.71 CW Mode TX 0.02 CW Mode TX 0.00CW Mode TX
Q42 2SC945 NPN
B-1
AM / FM / SSB RX
0.77 AM / FM / SSB RX 1.65 AM / FM / SSB RX 0.15
AM / FM / SSB TX
0.78 AM / FM / SSB TX 1.65 AM / FM / SSB TX 0.16
Q43 2SC1675 NPN B-3 0.00AM / FM RX 8.04AM / FM RX 5.06AM / FM RX
0.01AM / FM TX 8.04AM / FM TX 5.05AM / FM TX
0.00 SSB RX 8.04 SSB RX 0.30 SSB RX
0.01 SSB TX
0.07 With MOD 8.04 SSB TX 5.60 With MOD 0.30 SSB TX 1.05 With MOD
Q44 2SC1675 NPN B-6 0.02AM / FM RX 0.03AM / FM RX 0.01AM / FM RX
2.12AM / FM TX 4.56AM / FM TX 1.41AM / FM TX
2.10 SSB RX 4.54 SSB RX 1.38 SSB RX

2.12 SSB TX 4.57 SSB TX 1.40 SSB TX
Q45 2SA733 PNP
B-6
AM / FM / SSB RX
8.04 AM / FM / SSB RX 0.01 AM / FM / SSB RX 0.00
AM / FM / SSB TX
8.05 AM / FM / SSB TX 0.02 AM / FM / SSB TX 0.01
8.04 CW Mode RX 0.00 CW Mode RX 8.04CW Mode RX
4.91 CW Mode TX 5.54 CW Mode TX 5.58CW Mode TX
Q46 2SC2312 NPN B-6 0.00AM / FM RX 4.15AM / FM RX 0.00AM / FM RX
0.68AM / FM TX 3.80AM / FM TX 0.00AM / FM TX
0.00 SSB RX 13.25 SSB RX 0.00 SSB RX
0.68 SSB TX
0.71 With MOD 12.60 SSB TX 15.11 With MOD 0.00
Q47 2SC2312 NPN A-6 0.00AM / FM RX 4.15AM / FM RX 0.00AM / FM RX
0.58AM / FM TX 3.80AM / FM TX 0.00AM / FM TX
0.00 SSB RX 13.25 SSB RX 0.00 SSB RX
0.68 SSB TX
0.71 With MOD 12.60 SSB TX 15.11 With MOD 0.00
Q48 2SC2166 NPN B-4 0.00AM / FM RX 4.15AM / FM RX 0.00AM / FM RX
0.74AM / FM TX 3.88AM / FM TX 0.00AM / FM TX
0.00 SSB RX 13.25 SSB RX 0.00 SSB RX
0.74 SSB TX 12.75 SSB TX 0.00
Q49 2SC2314 NPN B-4 0.00AM / FM RX 0.00AM / FM RX 0.00AM / FM RX
1.25 AM / FM TX 8.30AM / FM TX 0.70AM / FM TX

0.00 SSB RX 0.00 SSB RX 0.00 SSB RX
1.28 SSB TX
1.30 With MOD 7.95 SSB TX 8.06 With MOD 0.57 SSB TX 0.59 With MOD
Q50 2SC1906 NPN B-4 0.00AM / FM RX 0.00AM / FM RX 0.00AM / FM RX
1.41AM / FM TX 7.95AM / FM TX 0.71AM / FM TX
0.00 SSB RX 0.00 SSB RX 0.00 SSB RX
1.45 SSB TX 7.95 SSB TX
7.97 With MOD 0.66 SSB TX 0.69 With MOD
Q51 2SB754 PNP B-4 13.31AM / FM RX 4.29 AM / FM RX 13.79AM / FM RX
12.74AM / FM TX 3.43AM / FM TX 13.57AM / FM TX
13.25 SSB RX 13.25 SSB RX 13.79 SSB RX
12.80 SSB TX
12.15 With MOD 12.80 SSB TX 12.13 With MOD 13.66 SSB TX 13.39 With MOD
Q52 2SC945 NPN B-4 4.03AM / FM RX 13.30AM / FM RX 4.10AM / FM RX
4.03AM / FM TX 12.15AM / FM TX 3.48AM / FM TX
12.27 SSB RX 12.63 SSB RX 12.85 SSB RX
11.75 SSB TX
11.23 With MOD 12.30 SSB TX 11.52 With MOD 12.55 SSB TX 11.79 With MOD
Q53 2SA473 PNP B-4 13.30AM / FM RX 4.29AM / FM RX 13.31AM / FM RX
12.15AM / FM TX 3.43AM / FM TX 12.74AM / FM TX
12.63 SSB RX 13.25 SSB RX 13.25 SSB RX
12.30 SSB TX
11.52 With MOD 12.80 SSB TX 12.13 With MOD 12.80 SSB TX 12.15 With MOD
Q54 2SC945 NPN B-4 0.00 AM / FM RX 13.30AM / FM RX 0.00AM / FM RX