Model RCI-2985DX / RCI-2995DX
Frequency Range 12 meter : 24.8900 ~ 24.9900 MHz
Tuning Steps 100 Hz, 1 KHz, 10 KHz, 100 KHz, 1 MHz
Emission Modes AM(A3) / FM(F3) / LSB, USB(A3J) / CW(A1)
Frequency Control Dual Phase-Lock-Loop (PLL) synthesizer
Frequency Tolerance
Frequency Stability
Operating Temperature Range
Microphone Plug-in (6 pin), Dynamic PTT
Meter Function Meter #1 : Indicates relative RF Power Output / Antenna SWR
RF Power Output : RCI-2985DX
: RCI-2995DX
SSB Generation Dual-Balanced Modulation
AM Modulation High and Low level Class B, Amplitude Modulation
FM Deviation
Clarifier Range
Harmonic and Spurious Emissions > 60dB
AM/FM Frequency Response 400 to 5000 Hz
SSB Frequency Response 400 to 3000 Hz
Output Impedance 50 Ohms
Output Indicators RF Meter shows relative RF Output Power
1.2 RECEIVER
Sensitivity
AM/FM Selectivity 50dB at 10 KHz
SSB Selectivity 60dB at 4 KHz
Image Rejection Ratio > 50dB
IF Rejection > 80dB
Automatic Gain Control (AGC) Figure Of Merit SSB/CW/AM : 80dB for 50mV for 10dB Change in Audio
Squelch
Audio Frequency Response 400 to 2500 Hz
Distortion < 10% at 2 Watts Output
Adjacent Channel Rejection >50dB
Cross Modulation >50dB
Intermediate Frequency 10.695 MHz (AM-1st, SSB), 445 KHz (AM-2nd)
Clarifier Range
Noise Blanker IF Signal Gate Type
Audio Output Power 3W @ 10% THD
Built-in Speaker 8 Ohms, 4 Watts
External Speaker (Optional) 8 Ohms, 4 Watts
DX
(SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE)
10 meter : 28.0000 ~ 29.6990 MHz
± 0.005%
± 0.001%
-10°C to +50°C
Meter #2 : Indicates Received Signal Strength /
AM Modulation Level
CW/AM/FM : 10W RMS ; USB/LSB : 25W PEP
CW/AM/FM : 50W RMS ; USB/LSB : 150W PEP
± 4 KHz @ 1 KHz 30mV Audio (± 5 KHz max.)
± 5 KHz
AM/CW : < 0.50µV For 10dB S+N/N
FM : < 0.25µV For 12dB S+N/N
USB/LSB : < 0.15µV For 10dB S+N/N
Output
Adjustable-Threshold less than 0.7µV
± 5 KHz
CHAPTER 1
SPECIFICATIONS
- 2 -
RCI-2985DX
RCI-2995
2.0 INTRODUCTION
The Ranger RCI-2985DX / RCI-2995DX is a solid-state, fully synthesized Amateur 10 and 12 meter
dual band base station transceiver with full band coverage from 28.0000 MHz to 29.6999 MHz and
24.8900 MHz to 24.9900 MHz and all mode operation, including: AM, FM, USB, LSB, CW and PA
modes. The 10 most commonly used frequencies can be pre-programmed by the user for easy channel
access.
2.1 FEATURES
RCI-2985DX RCI-2995DX
• 25 Watts PEP of Output Power
• Full Band Coverage
• All Mode Operation
• Brightness Control
• CTCSS Encoder/Decoder (Optional)
• Repeater/Offset Switch
• Programmable Frequencies
• Built-in Dual VFO
• RIT (RX Incremental Tuning)
• Squelch
• Noise Blanker
• RF Gain Control
• RF Power Output Selector
• External Speaker Connection
• PA Mode
• LCD Display
• Multi-Function LCD Meter
DX
• 150 Watts PEP of Output Power
• Full Band Coverage
• All Mode Operation
• Brightness Control
• CTCSS Encoder/Decoder (Optional)
• Repeater/Offset Switch
• Programmable Frequencies
• Built-in Dual VFO
• RIT (RX Incremental Tuning)
• Squelch
• Noise Blanker
• RF Gain Control
• RF Power Output Selector
• External Speaker Connection
• PA Mode
• LCD Display
• Multi-Function LCD Meter
CHAPTER 2
INTRODUCTION
- 3 -
RCI-2985DX
RCI-2995
DX
CHAPTER 3
OPERATION
Figure 3-1 Front Panel
3.0 INTRODUCTION
This section explains the basic operating procedures for the RCI-2985DX / RCI-2995DX Amateur 10
and 12 meter dual band base station transceiver.
3.1 CONTROL AND CONNECTIONS
3.1.1 FRONT PANEL
Refer to the above Figure 3-1 for the location of the following controls.
1. POWER ON/OFF SWITCH
Push this switch to apply power to the unit.
2. CALIBRATE CONTROL
This control is used for calibrating the built in SWR meter for accurate SWR readout. Control should
normally be left in the fully counter clockwise position for accurate power output meter readings. (This
stop is marked “RF”)
3. RF POWER CONTROL
This control allows the user to adjust RF power output.
4. RF GAIN CONTROL
This control is used to reduce the gain of the RF amplifier under strong signal conditions.
- 4 -
5. MIC GAIN CONTROL
Adjusts the microphone gain in the transmit and PA mode. This controls the gain to the extent that full
talk power is available several inches away from the microphone. In the Public Address (PA) mode, the
control functions as the volume control.
6. CHANNEL SELECTOR
This control is used to select a desired transmit and receive channel.
7. CLARIFIER CONTROL
Allows adjustment of the receive frequency above or below the channel frequency. Although this
control is intended primarily to tune in SSB signals, it may be used to optimize AM/FM signals as well.
8. SQUELCH CONTROL
This switch is used to eliminate background noise being heard through the receiver which can be
disturbing when no signal is being received. To use this feature of your radio, gently turn the switch
fully counterclockwise, and then turn clockwise until the background noise is just eliminated. Further
clockwise rotation will increase the threshold level so that only strong signals will be heard.
9. VOLUME CONTROL
Turn clockwise to set the desired listening level.
10. MODE SELECTOR
This selector allows you to select one of the following operating modes: FM/AM/USB/LSB/CW/PA.
11. PHONE JACK
Accepts a plug from a headset of 4 to 32 Ohm impedance. Insertion of the plug will disable the built-in
speaker and external speaker connected to External Speaker jack.
12. RF/SWR METER
Used for two purpose - to indicate approximate transmitter power when transmitting and antenna SWR
(standing wave ratio). Note that the power meter has separate scales for AM, FM, SSB and CW
transmission, respectively.
13. SIGNAL/MODULATION METER
This meter indicates signal strength when receiving and modulation percentage when transmitting in
the AM mode. Modulation readings are most accurate when using maximum output power. The
modulation meter does not show movement in FM or SSB, but the Power Output meter (RF/SWR)
does indicate RF out in these modes.
14. FREQUENCY DISPLAY
The frequency display indicates the frequency of the selected channel you wish to operate on.
15. FUNCTION INDICATORS
The indicators permit you to know instantly the mode to which the unit is engaged.
3.1.2 PROGRAMMING KEY PAD
- 5 -
16. NB/ANL/OFF SWITCH
In the NB/ANL position, the RF Noise Blanker and the Automatic Noise Limiter in the audio circuits
are also activated. The Noise Blanker is very effective in eliminating repetitive impulse noise such as
ignition interference.
17. ROGER BEEP BUTTON (R.BEEP)
In the Roger Beep position, the radio transmits an audio tone at the end of your transmission to indicate
that transmission has ended. As a courtesy to others, use the Roger Beep only when necessary.
18. SPLIT BUTTON (SPLIT)
This control activates the offset frequency function. It causes the transmit frequency to be offset either
above or below the receive frequency by a user programmable amount to allow operation of a FM
Repeater.
19. PROGRAM BUTTON (PRG)
This button is used to program operating or scanning frequencies into memory. See the OPERATION
section of the manual for further details.
20. MANUAL BUTTON (MAN)
This is used to return the unit to manual mode.
21. SHIFT BUTTON (SHF)
This is used to select 100 Hz, 1 KHz, 100 KHz or 1MHz frequency steps.
22. UP/DOWN SELECTOR (VW)
These buttons are used in conjunction with the shift key to move the frequency upward or downward to
select a desired frequency.
23. LOCK BUTTON (LOCK)
This button is used to lock a selected frequency. Press it to activate the switch. In this position, it
disables the Frequency Selector Control, up/down buttons on the front control panel and remote
up/down buttons on the microphone. Repressing the switch will unlock the frequency.
24. ENTER BUTTON (ENT)
- 6 -
This is used to program memory channels. See the OPERATION section of this manual for more
information on using this control.
25. MEMORY BUTTON (MEM)
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.
26. SCAN BUTTON (SCAN)
This is used to scan frequencies in each band segment. The OPERATION segment of this manual
provides detailed information on using the SCAN control.
27. SWR BUTTON (SWR)
This button is used to check SWR.
28. DIM BUTTON (DIM)
This button adjusts the display backlighting in four different steps to best match the ambient light.
3.1.3 REAR PANEL
- 7 -
Figure 3-2 represents the location of the following connections:
1. ANTENNA
This jack accepts 50 ohms coaxial cable with a PL-259 type connector.
2. PA. SPEAKER
This jack is for PA operation. Before operating, you must first connect a PA speaker (8 ohms, 4 W) to
this jack.
3. EXT. SP.
This jack accepts a 4 to 8 ohm, 4 watt external speaker. When the external speaker is connected to this
jack, the built-in speaker will be disabled.
4. CW KEY
Used for Morse code operation. Connect a CW key to this jack and set the MODE SELECTOR
switch to the CW position.
5. FUSE
Accommodates a fuse for AC input circuit protection. Use a 125V 5A fuse for replacement.
6. AC POWER CORD
Connect to AC power outlet for AC mains supply.
7. FREQUENCY COUNTER OUTPUT JACK
This “RCA Phono” type jack provides output for connecting an optional frequency counter so that you
can watch the transmit frequency on an external frequency counter.
8. +12 VDC
This “RCA Phono” type jack provides 12 VDC power for an optional external cooling fan.
3.2 MICROPHONE
Figure 3-2 Rear Panel
- 8 -
1. PTT SWITCH
The receiver and transmitter are controlled by the push-to-talk switch on the microphone. Press the
switch and the transmitter is activated, release the switch to receive. When transmitting, hold the
microphone two inches from your mouth and speak clearly in a normal voice. The transceiver comes
complete with a low impedance (500 ohm) dynamic microphone.
2. REMOTE UP/DOWN SWITCH
An operating frequency can be increased or decreased simply by pushing either of these buttons.
3.3 OPERATION
3.3.1 CHANNEL SELECTION
Frequency selection for the RCI-2985DX / RCI-2995DX is simple. Select a desired operating
frequency by rotating the Frequency Selector, or using the (V) Up and (W) Down buttons on the front
panel or the microphone. Press the LOCK button to lock into the selected frequency. This will disable
the Frequency Selector and the up/down buttons on the front panel and the microphone. Repressing the
LOCK button unlocks the frequency. Use the SHF button to step frequency in 100 Hz, 1 KHz, 10 KHz,
100 KHz or 1 MHz increment when you select a band segment. The frequency step is indicated by a
small triangle directly under the corresponding digit on the frequency display.
3.3.2 MODE SELECTION
To select an operating mode on your RCI-2985DX / RCI-2995DX, simply rotate the MODE selector
and place it in the desired operating mode position FM/AM/USB or LSB modes are for your voice
communications. In the CW position, you can transmit CW if you have connected an external key to
the accessory jack provided on the back of the radio. In the PA position, the transceiver can be used as
a Public Address system. Before operating in PA mode, you must first connect a PA speaker (8 ohms, 4
Watt) to the jack located on the rear panel.
3.3.3 RF POWER CONTROL
This feature allows the adjustment of the RF output power continuously over the range of 1W through
25W (RCI-2995DX : 2W through 150W).
3.3.4 RECEIVE SCANNING
Receive scanning allows you to find active frequencies in the entire band segment. To begin scanning,
slowly turn the Squelch control clockwise until the receiver noise disappears. Press the Scan button.
The unit should start scanning from the lower to the higher frequencies. Pressing the Scan button again
will change the direction of scanning. Each time you press the Scan button, “SCAN+” or “SCAN-” will
displayed on the LCD display. The radio will stop on any active frequency for the entire duration of the
transmission. When the transmission stops, the RCI-2985DX / RCI-2995DX will wait approximately 2
seconds before it resumes scanning. If you want to deactivate Scan mode while it is scanning, press the
MAN (manual) button or turn the Squelch control counterclockwise until you hear the receiver noise.
The Manual button will disable Scan function.
3.3.5 SPLIT FUNCTION
This function enables you to offset the transmit and receive frequencies for FM repeater operation. The
transmitter frequency can offset either higher or lower than the receive frequency. To split frequencies,
- 9 -
press the MAN button and the Split button to select either +/- split frequency. If the + split is selected,
the transmit frequency will be higher than the receive frequency. If - split is selected, the transmit
frequency will be lower than the receive frequency.
3.3.6 MEMORY FUNCTION
The RCI-2985DX / RCI-2995DX can store up to 10 most frequently used frequencies (from 0 to 9). To
program a frequency into memory, follow the procedure described below:
(1) Press the MAN button.
(2) Press the PRG button.
(3) Press the MEM button (“MEMORY” and “0” should appear on the left-hand side of the LCD
display). Pressing the MEM button will advance the channel number from “0” to “9”.
(4) Select the desired frequency you wish to store in memory.
(5) Press the ENT button.
(6) Repeat the same procedure to program other memory channels.
3.3.7 MEMORY CHANNEL SCANNING
You can scan and select any of these 10 preset frequencies by following the procedure described
below:
(1) Press the MAN button.
(2) Press the MEM button.
(3) Slowly turn the Squelch knob clockwise until the receiver noise disappears.
(4) Press the Scan button. The unit will scan from lower to higher frequencies. When you press the
button again, it will scan from higher to lower frequencies.
(5) To stop scanning a certain channel, press the MAN button, or turn the Squelch knob
counterclockwise until you hear the receiver noise.
3.3.8 METER
The meter built into your RCI-2985DX / RCI-2995DX on the left hand side of the LCD display
provides the following information:
1. SIGNAL/MODULATION METER
In transmit mode, it provides a visual indication of modulation percentage when transmitting in the AM
mode and received signal strength on the receive mode.
2. RF/SWR METER
This meter has two purpose. It indicates relative transmitter power when transmitting and antenna SWR
(Standing Wave Ratio). In order to achieve maximum radiated power, it is important that your antenna
be in good condition, properly adjusted and matched to your transceiver. The built-in SWR (Standing
- 10 -
Wave Ratio) meter allows you to measure your antenna condition. To operate this function, connect
your antenna to the transceiver antenna connector, set the mode switch to AM and adjust the MIC Gain
to minimum. Select a frequency near the middle of the band you plan to use most. Activate the SWR
function and press the PTT button on the microphone. A bar on the meter is an indication of the
antenna matching. If there is no bar, it indicates that your antenna system is perfectly matched. The less
bar, the better matched. If several bars appear, your antenna needs adjusting. The SWR function is self
calibrating.
3.3.9 CTCSS - OPTIONAL
The RCI-2985DX / RCI-2995DX can operate with CTCSS frequencies for accessing repeaters, with an
optional CTCSS (Continuous Tone Coded Squelch System) encoding device installed.
3.3.10 PROCEDURE TO RECEIVE
(1) Be sure that the power source, microphone and antenna are connected to the proper connectors
before going to the next step.
(2) Press the POWER switch to apply power to the transceiver.
(3) Set the VOL. to a comfortable listening level.
(4) Set the MODE switch to the desired mode.
(5) Listen to the background noise from the speaker. Turn the SQUELCH knob slowly clockwise until
the noise just disappears. The SQUELCH is now properly adjusted. The receiver will remain quiet
until a signal is actually received. Do not advance the control too far or some of weaker signals will
not be heard.
(6) Set the CHANNEL selector switch to the desired channel.
(7) Set the RF GAIN control fully clockwise for maximum RF gain.
(8) Adjust the CLARIFIER control to clarify the SSB signals or to optimize AM/FM signals.
3.3.11 PROCEDURE TO TRANSMIT
(1) Select the desired channel of transmission
(2) Set the MIC GAIN control fully clockwise.
(3) If the channel is clear, depress the push-to-talk switch on the microphone and speak in a normal
voice.
RCI-2985DX
RCI-2995
DX
- 11 -
CHAPTER 4
PROGRAMMING
4.0 INTRODUCTION
This section explains the basic programming procedures for the RCI-2985DX / RCI-2995DX Amateur
10 and 12 meter dual band base station transceiver.
4.1 FREQUENCY SELECTION
Frequency selection in the RCI-2985DX / RCI-2995DX can be accomplished using anyone of the three
following methods:
(1) The first method of frequency selection is through the use of the SHF (Shift) key and the (V) Up
and (W) Down arrows. To accomplish this, press the SHF button until the cursor arrow is
positioned under the digit of the frequency that is to be changed, then use the (V) Up arrow to
increase the number. If a decrease in frequency is desired, press the (W) Down arrow. Perform
the steps described above for each digit of the frequency until the desired frequency is displayed
in the LCD display window.
(2) The second method of frequency selection is accomplished using the SHF button and the
frequency select knob located on the front panel. Use the SHF button in the manner described
above to select the digit to be changed. 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 SHF
button and the Channel (V) Up and (W) Down buttons located on the microphone. Frequency
selection by this method is accomplished in the same manner as with the (V) Up and (W) Down
arrows on the keypad. The only difference is that the Channel Up and Down buttons on the
microphone is used.
4.2 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 permits the user to scan all frequencies
between a pre-set upper and lower scan limit. Both of the methods of the frequency scanning.
4.2.1 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 PRG (Program) key.
(2) Press the SCAN key (“PRG SCAN+” should appear in the lower right corner of the display
window).
(3) Using the SHF key and the (V) Up and (W) Down arrows, select the upper scan limit, then press
ENT.
(4) Press the SCAN key again (“SCAN-” should appear in the display window).
(5) Using the SHF key and (V) Up and (W) Down arrows, select the lower scan limit, then press
ENT.
- 12 -
The upper and lower scan limits have now been programmed. To activate the scan feature, return the
radio to manual operation and press the SCAN 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 SCAN.
NOTE
When programmed, the upper and lower scan limits will
also act as the upper and lower operating limits of the
radio. The radio now cannot be programmed to operate
above or below the scan limits.
4.2.2 MEMORY SCANNING
The RCI-2985DX / RCI-2995DX 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 PRG (Program) key.
(2) Press the MEM (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 MEM key will increase the memory
counter to the next memory location and the contents of that memory location will be displayed.
(3) Using the SHF key and the (V) Up and (W) Down arrows, enter the frequency to be stored in the
memory location displayed. After the desired frequency has been entered, press ENT.
(4) Repeat steps (2) and (3) for all 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 MAN key.
(6) To initiate memory scanning, press MEM and then press SCAN. As previously discussed, the
display will show “SCAN+” or “SCAN-” to indicate whether the radio is scanning from the
lowest or the highest memory location or vice versa.
(7) To return the radio to normal (non-scanning) operation, press the MAN key.
4.3 OFFSET FREQUENCY OPERATION
The RCI-2985DX / RCI-2995DX 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 and
12 Meter dual band.
- 13 -
NOTE
The FM repeaters may require a subaudible (CTCSS)
tone be transmitted to gain access to the repeater. The
RCI-2985DX / RCI-2995DX 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 100 KHz
offset will be described. Before attempting to program the offset frequency, ensure that the radio is
operating in the manual mode by pressing the MAN key.
(1) Press the PRG (Program) key.
(2) Press the SPLIT key. The LCD display window will display “00000” with “PRG” and “SPLIT”
being displayed in the lower left hand corner.
(3) Using the SHF key and the (V) Up and (W) Down arrows as described earlier, program the
display to read “010000”.
(4) Press ENT. A 100 KHz offset has now been programmed into the radio.
(5) Return the radio to manual operation by pressing the MAN key.
(6) Using the SHF key and the (V) Up and (W) Down arrows as described previously, set the radio
for the desired receive frequency.
(7) Press SPLIT. In the lower right corner of the display, either “SPLIT+” or “SPLIT-” will be
displayed. If SPLIT+ is displayed, the transmitter will be offset 100 KHz above the receive
frequency when keyed. If SPLIT- is displayed, the transmitter will be offset 100 KHz below the
receive frequency.
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
MAN key.
NOTE
RCI-2985
RCI-2995
DX
DX
- 14 -
CHAPTER 5
CIRCUIT
DESCRIPTION
5.0 INTRODUCTION
This section explains the technical theory of operation for the RCI-2985DX / RCI-2995DX Amateur 10
and 12 meter dual band base station transceiver.
5.1 PLL CIRCUIT
The Phase Lock Loop (PLL) circuit is responsible for developing the receiver’s first local oscillator
signal and the transmitter’s exciter signal. The PLL circuit consists primarily of IC2, IC3, Q29, Q32,
Q33, Q34, Q36, Q37, Q38 and L16. The PLL circuit is programmed by the rotary channel switch GPS-
0751. The switch allows IC (U601) on CPU PCB to communicates the correct binary data information
to the programmable divider inside of IC2. IC2 then controls the VCO (Voltage Controlled Oscillator)
to oscillate on the correct frequency. This signal is fed either into the receiver’s first mixer (for receive
operation) or the transmitter’s mixer (for transmit operation).
5.2 RECEIVER CIRCUIT
The incoming RF signal comes into the radio via the antenna and into the front-end pre-amp, Q19. The
RF signal is fed into the mixer circuit of Q20 and Q21. The signal is then filtered by L8, L9 and L10
then into the AM/FM IF section of the receiver (depending on the mode of operation). The signal is
then detected by either the AM detector or FM detector and then fed to the audio amplifier section of
the receiver and finally out to the speaker.
5.3 TRANSMITTER MODULATION CIRCUIT
(1) The transmitter modulation circuit modulates the low-level RF signal from the PLL exciter circuit
with the user’s audio voice signal from the microphone. The audio from the microphone is then
amplified and fed into the balanced modulator circuit.
(2) If the transceiver is in the AM mode, the AF Power amplifier modulates the last RF amplifier,
which produces a true amplitude modulated RF signal.
(3) If the transceiver is in the FM mode, the audio signal is not mixed with 10.6975MHz oscillator but
instead phase modulates the basic exciter signal from the PLL circuit in the TX mixer.
(4) If the transceiver is in the SSB mode, the audio signal is mixed with the 10.6975MHz oscillator in
IC5.
5.4 TRANSMITTER AMPLIFIER CIRCUIT
The transmitter takes the basic exciter signal from the TX mixer and amplifies it through a series of
amplifiers consisting of Q64, Q63, Q62, Q61, Q60 and EPA010010B (only for RCI-2995DX) where it
is then sent out to the antenna connector.
- 15 -
- 16 -
- 17 -
- 18 -
RCI-2985DX
RCI-2995
DX
6.0 REQUIRED TEST EQUIPMENT
AC Power Supply (110V AC)
RF Wattmeter
Multimeter
Automatic Modulation Meter
CHAPTER 6
ALIGNMENT
Frequency Counter (100 MHz)
RF Signal Generator (100 MHz)
Automatic Distortion Meter
Oscilloscope (50 MHz)
- 19 -
Audio Signal Generator Sinad Meter
6.1 ALIGNMENT PROCEDURES
This transceiver has been aligned at the factory and does not require any adjustments at installation.
The required test equipment listed are used for the test setup or alignment shown in Figure 6-1
Transmitter Test Setup and Figure 6-2 Receiver Test Setup. These test setups are used in part or total
during the following adjustments and refer to Page 59 for adjustment location.
6.1.1 PLL ALIGNMENT
ITEM U.U.T. SETTING ADJUST
MEASUREMENT
POINT
PLL 2
VCO Voltage
Set radio to 24.890 MHz, AM RX mode.
Frequency setting at 29.699 MHz.
L14
1.0 VDC ± 0.1 ≤ 4.5 VDC
Connect Multimeter to TP10.
PLL 1
VCO Voltage
Set radio to 24.890 MHz, AM RX mode.
Frequency setting at 29.699 MHz.
L13
1.0 VDC ± 0.1 ≤ 6.5 VDC
Connect Multimeter to TP11.
AM Frequency Set radio to AM RX mode.
Set Clarifier Control to 12 o’clock.
VC2
10.100 MHz ± 10 Hz
Connect Frequency Counter to TP16.
TX Frequency Set radio to AM TX mode.
VR8
10.100 MHz ± 10 Hz
Connect Frequency Counter to TP16.
VCO Output Set radio to 28.000 MHz, AM RX mode.
Connect Oscilloscope to TP3.
AM OSC Set radio to AM TX mode. Mod off
Connect Frequency Counter to TP5.
USB OSC Set radio to USB TX mode. Mod off.
Connect Frequency Counter to TP5.
LSB OSC Set radio to LSB TX mode. Mod off.
Connect Frequency Counter to TP5.
L17 Maximum Output
38.6950 MHz.
L18
10.6950 MHz ± 10
Hz
L20
10.6975 MHz ± 10
Hz
L19
10.6925 MHz ± 10
Hz
6.1.2 TRANSMITTER ALIGNMENT
RCI-2995DX LEVELS ARE SHOWN IN [ ].
ITEM U.U.T. SETTING ADJUST
MEASUREMENT
POINT
TX Power Set radio to 28.000 MHz, AM TX mode.
Modulation off.
Set radio to 28.000 MHz, USB TX mode.
AF signal 30mV, 1 KHz to microphone.
Connect Oscilloscope to TP17.
Set RF PWR Fully Clockwise.
Set Clarifier Control to 12 o’clock.
- 20 -
L18,L37,
L35,L34
Maximum Output.
Set radio to 24.890 MHz and 29.699 MHz. L35,L34 Maximum Output and
Balance.
AM APC
SSB APC
BIAS Current Set radio to USB TX mode.
AM TX Power Set radio to 28.000 MHz, AM TX mode.
RF Power
Meter
SSB ALC Set radio to USB TX mode.
SSB Carrier
Balance
Set radio to AM TX mode.
Connect Multimeter to TP8.
Set radio to USB TX mode.
Connect Multimeter to TP8.
Modulation off.
Connect current meter to TP7(+) and TP9(-).
Connect current meter to TP7(+) andTP8(-).
Modulation off.
Connect “short PCB” to TP7 and TP9.
Set RF PWR Fully Counter Clockwise.
Connect RF Power Meter to antenna jack.
Set radio to 28.0000 MHz, AM TX mode.
Set RF Power Fully Clockwise.
AF signal 30mV, 1 KHz to microphone.
Set radio to USB TX mode.
AF signal 30mV, 1 KHz to microphone.
VR15 6 VDC
VR18 12.5 VDC
VR13
VR12 + VR11
10 mA
(50 mA + 50 mA) =
100 mA
VR15
VR19
10W [50W]
1W [ 2W]
VR10 Meter Indicator
VR14
25W [100W]
VR7 Spurious Emission to
minimum.
Connect Oscilloscope to antenna jack.
CW TX Set radio to 28.000 MHz, CW TX mode.
VR9 200mV (Sine Wave)
Plug in CW Key.
Disconnect the Mic Jack.
Connect AC Voltmeter to EXT SP.
AM Modulation
FM Modulation
Set radio to 28.000 MHz, AM TX mode.
Set radio to 28.000 MHz, FM TX mode.
AF signal 30mV, 1 KHz to microphone.
VR17 90%
4KHz
Set Mic Gain Fully Clockwise.
6.1.3 RECEIVER ALIGNMENT
ITEM SETTINGS ADJUST
MEASUREMENT
POINT
AM Sensitivity Set radio to 28.000 MHz, AM RX mode.
Set Clarifier Control to 12 o’clock.
Set RF Gain Fully Clockwise.
Set SQ Fully Counter Clockwise.
Set NB/ANL/OFF switch to OFF position.
Set VOL Control at 2 o’clock.
Connect RF SG to antenna jack.
Frequency 28.000 MHz, 1uV. Mod 30%.
Set radio to 24.890 MHz, AM RX mode.
L5,6,7,8,9,10,
2,3
L5,L6, L7
Audio Output > 2V
S/N > 10 dB
Balance between
- 21 -
RF SG setting 24.890 MHz.
Set radio to 29.699 MHz, AM RX mode.
24.890 and 29.699
MHz
RF SG setting 29.699 MHz.
USB Sensitivity Set radio to USB RX mode.
VOL. Control Fully Clockwise.
RF SG setting 28.001 MHz, 0.5uV. Mod off.
LSB Sensitivity Set radio to LSB RX mode.
VOL Control Fully Clockwise.
RF SG setting 27.999 MHz, 0.5uV. Mod off.
FM Distortion Set radio to 28.000 MHz, FM RX mode.
Set MODE switch to FM mode.
RF SG setting 28.000 MHz, 1mV. Mod 3KHz.
NB Adjust Set radio to 28.000 MHz, AM RX mode.
RF SG setting 28.000 MHz, 100uV. Mod off.
L11, L12 Audio Output > 2V
S/N > 10 dB
L11, L12 Audio Output > 2V
S/N > 10 dB
L4 Audio Output > 3V
Distortion < 10%
L1 DC Voltage to max.
> 2V
Set NB/ANL/OFF switch to NB/ANL position.
Connect Voltmeter to TP1.
AM Squelch Set radio to 28.000 MHz, AM RX mode.
Set SQ Control Fully Clockwise.
RF SG setting 28.000 MHz, 1mV. Mod 30%.
SSB Squelch Set radio to USB RX mode.
Set SQ Control Fully Clockwise.
RF SG setting 28.001 MHz, 1mV. Mod off.
AM S/RF Meter
AM S-Meter
Set radio to 28.000 MHz, AM RX mode.
RF SG setting 28.000 MHz, 100uV. Mod 30%.
VR4 Slowly Adjust very slowly
until squelch just
open.
VR3 Slowly Adjust very slowly
until squelch just
open.
VR1 “6 bar” on the Level
Meter Indicator and
Meter needle to S9 on
the S scale.
SSB S-Meter Set radio to USB RX mode.
RF SG setting 28.001 MHz, 100uV. Mod off.
VR2 “6 bar” on the Level
Meter Indicator and
Meter needle to S9 on
the S scale.
Figure 6-1 Transmitter test setup
- 22 -
Figure 6-2 Receiver test setup
RCI-2985DX
RCI-2995
DX
CHAPTER 7
MAINTENANCE
7.0 PRECAUTIONS
The inherent quality of the solid-state components used in this transceiver will provide many years of
continuous use. Taking the following precautions will prevent damage to the transceiver.
(1) Never key the transmitter unless an antenna or suitable dummy load is connected to the antenna
receptacle.
(2) Ensure that the input voltage does not exceed 110 V AC.
- 23 -
(3) During alignment, do not transmit for more than 10 seconds at a time. Transmitting over long
periods can cause heat built-up and cause transmitter damage.
7.1 PERIODIC INSPECTION
This unit is aligned at the factory to deliver maximum performance. However, continued performance
cannot be expected without periodic inspection and maintenance. Important points to be checked
regularly are as follows;
Check Item Action
Whip antenna
(option)
Coaxial cable If sheath is cracked, seal with
Coaxial & power
plug connections
Ground terminal If corroded, clean terminal.
7.2 FUSE REPLACEMENT
To protect the equipment from serious damage, a fuse is provided on the power supply lines. The fuse
protect against over voltage / reverse polarity or internal fault of the equipment. If the fuse has blown,
first find out the cause of the trouble before replacing it. A fuse rated for more than the transceiver
requirement should not be used, since it may permanently damage the equipment. Damage due to over
fusing is not covered by the warranty.
If cracked or broken, replace it.
vinyl tape. If immersed with
water, install new coaxial cable.
If loosened, reconnect. If
corroded, clean contacts.
RCI-2985
RCI-2995
8.0 GENERAL
Information on most electrical and mechanical parts is included in the parts list. The reference
designators are in alphanumeric order.
8.1 ORDERING REPLACEMENT PARTS
Parts orders should be referred to the parts department at:
∗ Ranger Communications, Inc.
401 W. 35Th ST., # B,
NATIONAL CITY, CA 91950-7909
NUMBER
1 EPTSSB190B POWER INPUT P.C.B
2 R190 RCP102254Z
3 C190,C191,C192,C193 CX0071027Z
4 L190,L191 ECCHK16098
2.2M Ω 1W
HV DISC 0.001µF
CHOKE COIL 6.8µH
5 A,B,C,D,E,F,G,H,I,J,K GZZZ50011Z C PIN
REMARK:
COPPER SIDE (BLUE)
- 44 -
PART LIST:
RCI-2985DX POWER INPUT P.C.B
ITEM REFERENCE NUMBER RANGER PART
DESCRIPTION
NUMBER
1 EPT0SSB90B POWER INPUT P.C.B
2 R901 RCP122254Z
3 C901,C901,C902,C903,
CX0071027Z
2.2M Ω 1/2W
HV DISC 0.001µF
C904
4 L901,L902 ECCHK16098
CHOKE COIL 6.8µH
5 L901,L902 WX0008020A TUBE
REMARK:
COPPER SIDE (BLUE)
- 45 -
PART LIST:
RCI-2985DX / RCI-2995DX PTT P.C.B
ITEM REFERENCE NUMBER RANGER PART
DESCRIPTION
NUMBER
1 EPT295020A PTT P.C.B
2 R1 RCU144724Z
3 R2 RCU141034Z
4 C1 CC0501037L
4.7K Ω 1/4W
10K Ω 1/4W
0.01µF 50WV
5 Q1 T2SA00733P TR 2SA733P
6 PTT P.C.B WM0407005Z LEAD WIRE (YELLOW)
7 PTT P.C.B WM0607005Z LEAD WIRE (BLUE)
8 PTT P.C.B WM0207005Z LEAD WIRE (RED)
9 PTT P.C.B WL0440005Z LEAD WIRE (YELLOW)
10 PTT P.C.B XZZZ90392Z SP SPACER
REMARK:
COPPER SIDE (WHITE)
- 46 -
PART LIST:
RCI-2985DX / RCI-2995DX RF/MIC GAIN P.C.B
ITEM REFERENCE NUMBER RANGER PART
DESCRIPTION
NUMBER
1 EPTSSB140B RF/MIC GAIN P.C.B
2 C140,C141 CC0501027L
0.001µF 50WV
3 L140 ECBAD18526 BEAD COIL 3.5x6x1.2
4 MIC GAIN RV10203464 VR 1KA
5 RF GAIN RV10203465 VR 1KB
6 J140 EX07N41280 PCB CONN/S 6PIN
REMARK:
COPPER SIDE (BLUE)
- 47 -
PART LIST:
RCI-2985DX / RCI-2995DX EAR JACK 4P P.C.B
ITEM REFERENCE NUMBER RANGER PART
DESCRIPTION
NUMBER
1 EPTSSB200B EAR JACK 4P P.C.B
2 R201,R202 RCP104704Z
62A(TR604/C)-2N5301 WH0225005Z LEAD WIRE RED
62A(TR604/E)-2N5301 WH0425005Z LEAD WIRE
62A(TR604/B)-2N5301 WH0925005Z LEAD WIRE WHITE
62A(GND)-MAIN PCB(GP) WH0049005Z LEAD WIRE BLACK
62A(B+)-MAIN PCB(V+) WH0251005Z LEAD WIRE RED
METER-METER WL0010005Z LEAD WIRE BLACK
CPU(LP1)-METER,
CPU(LP2)-METER
90B(FUSE LINE)FUSE JACK
ANT JACKMAIN PCB(ANT)
- JS114012MQ SET SCREW
HANDLE JS035012MB SET SCREW
FRONT PLATE JS033006MN SET SCREW
HANDLE(4),
TOP COVER(4)
PCB CHASSIS(4) JS054008MS SET SCREW
EARPHONE(2) JS053008MB SET SCREW
C605 JS053010MN SET SCREW
2N5301(2) JS053012MN SET SCREW
- JS013006SN SET SCREW
HEATSINK(4) JS053008SN SET SCREW
- JS053008TB SET SCREW
HEATSINK(4) JS053208WB SET SCREW
ANT(3) JS053008TH SET SCREW
SPEAKER(4),PLATE(1) JS053508TH SET SCREW
FEET(4) JS013014TH SET SCREW
CPU(LP1)-METER,
CPU(LP2)-METER
E/C(-)-E/C(-) WN0007027K LEAD WIRE BLACK
E/C(+)-E/C(+) WN0307027K LEAD WIRE
110B(B3)-E/C,110B(B4)E/C
110B(B1)-E/C,110B(B2)E/C
190A(F)-50X/W,190A(G)50X/W
110B(B9)-50X/W WI0360011S LEAD WIRE
E/C(-) WN0060011B LEAD WIRE BLACK
E/C(+) WN0360011B LEAD WIRE
110B(B6)-MAIN(GP) WI0060011S LEAD WIRE BLACK
TC41036 WN0260005Z LEAD WIRE RED
TC41036 WN0960005Z LEAD WIRE WHITE
MAIN(V+)-50X/W WN0373005Z LEAD WIRE
POWER PCB WN0204005Z LEAD WIRE RED
POWER PCB WN0905505Z LEAD WIRE WHITE
110B(B7)-POWER PCB
(B-)--110B(B8)-POWER
PCB(B+)00
190(A)-FUSE WU0212011Q TWIN S/WIRE RED
- WA0100180A AC CORD
POWER PCB(O/P)-ANT,
POWER PCB(I/P)MAIN(ANT)
- WX0040015B PVC TUBE
- WX0040009B TUBE
- CE0353397Z
ANT JACK GZZZ50062Z V TYPE JACK
- PTTURB010A RUBBER KEY
- PTTURB020A REFLECTOR
- PTTURB030A DISPLAY WINDOW
- PT0SSB010A GLASS WINDOW
- PT0SSB040A PLASTIC FOOT
- PT0SSB070A METER BACK
- PT0SSB092A ACRY WINDOW
- PT3600090A KNOB WASHER
- PA0100010A MICA INSULATOR
- MTTURB012X FRONT CHASSIS
- MTTURB180B FRONT PANEL
- MTTURB030A BACK PANEL
- MTTURB041X MAIN PCB
- MTTURB050K HEATSINK COVER
- MTTURB064B REAR HEATSINK
- MTTURB070X PT HOLDER
- MTTURB080X PT BRACKET
- MTTURB090X POWER PCB
- MTTURB100X TR HEATSINK
- MTTURB110X METER HOLDER
- MTTURB140D CHANNEL KNOB
- MTTURB150A PUSH BUTTON
- MT0SSB021S BOTTOM PLATE
- MT0SSB071S RIGHT SIDE
- MT0SSB081S LEFT SIDE
- MT0SSB120B HANDLE ASSY
- MT0SSB130B HANDLE ASSY
- MT0SSB141S HANDLE BRACKET
- MT0SSB170N MIC BRACKET
- MT0SSB305X HEATSINK E
- 57 -
WL0017005Z LEAD WIRE BLACK
ORANGE
WI0020027R LEAD WIRE BLACK
WI0320027R LEAD WIRE
ORANGE
WN0250011Q LEAD WIRE RED
ORANGE
ORANGE
ORANGE
WX07918170 LEAD WIRE
RED/BLACK
WX04129230 RF CABLE
33000µF 35WV
PANEL
PLATE
HOLDER
COVER
CHASSIS
HOUSING
BRACKET
BRACKET
BLACK
BLACK
- MT0SSB010B TOP COVER
- MT0SSB390X FIXED PLATE
- MT0SSB101K INDICATOR NAME
- MT0SSB161B VR KNOB BLACK
- ML1645310X ANT COVER
POWER PCB MTTURB160X ONSERT
- MM5500100X HEATSINK C
METER BT6300041A MIC PLATE
- QT2950010A RUBBER KEY
- QM5500030A EARPHONE
CPU PCB XZZZ90374Z SPONGE
- XZZZ90208Z SPONGE
295031Z XZZZ90367Z SPONGE
- GZZZ50000Z CLAMP
- GZZZ50168Z CORD BUSHING
- GZZZ50049Z FUSE HOLDER
TOP COVER LZZZ60018Z SHIELD CLOTH A
SPEAKER LZZZ60020Z SHIELD CLOTH C
FEET LZZZ60021Z FOOT WASHER
2166,2312,473x1 XZZZ90003Z INSULATING RING
- XZZZ90358Z INSULATING
- XZZZ90057Z EAR PVC WASHER
- XZZZ90098Z SOLDER PLATE
- XZZZ90020Z INSULATING
METER XZZZ90061Z FOAM
90Z PCB XZZZ90357Z U TYPE BRACKET
IC7808 XZZZ90072Z INSULATING RING
BUZZER XZZZ90206Z SPONGE
- XZZZ90091Z FOAM
- JS013006MN SET SCREW
PT JS055010MN SET SCREW
HANDLE(4) JS035012MB SET SCREW
FRONT PLATE(3) JS033006MN SET SCREW
- JS053208WB SET SCREW
HANDLE(4),
TOP COVER(4)
REA(2),PT BKT(4) JS053008MB SET SCREW
754(1),ANT(1) JS053010MN SET SCREW
IC(3) JS052010MN SET SCREW
JS055012MB SET SCREW
BLACK
PLATE
COVER
PLATE
PLATE
2SA1869(1) JS052006MN SET SCREW
BACK PANEL(3),
INDICATOR,PLATE(4)
- JS053508TH SET SCREW
FEET(4) JS013014TH SET SCREW
E I/C(4),PCB CHASSIS(2),
HANDLE BKT(8),RIGHT/
LEFT(8),MAIN PCB(4),
FRONT PANEL(2),
POWER HOLDER(4),
BOTTOM PLATE(8),
MIC BKT(1),LED PCB(1),
LCD HOLDER(4)
EPT0SSB110A JS013508TH SET SCREW
PT(4),PCB CHASSIS(4),
PT
HEATSINK(4) JS054018MB SET SCREW
IC TA7222(1) JS013008MV SET SCREW
- JS013006SN SET SCREW
EAR PHONE(3) JW306011EY WASHER
SET/TOP COVER(4),
HANDLE(4)
FEET(4) JW304009FS WASHER
POWER PCB(4),ANT(1) JN243024ZS NUT
- JN263035ZS NUT WITH
- JE412004ZX EYELET
- JW315510CN OUT-TOOTH
- JS015010WH SET SCREW
- EX02N40214 FUSE 125V 5A
- XZZZ90008Z MIC STOPPER
- EDBG2BC11Z (22BC11) BRIDGE
- EDBG2BD11Z (22BD11) BRIDGE
(7222A) LZZZ61008Z IC SHIELD B
JS053008TB SET SCREW
JS013008TH SET SCREW
JS054008MS SET SCREW
JW305312FB WASHER
WASHER
WASHER
RECTIFIERS
RECTIFIERS
- 58 -
Main PCB Adjustment Location
- 59 -
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