I - INTRODUCTION:
The CES RM-10 Repeater Maker is a compact repeater control unit that can
make a repeater out of just about any two transceivers. The standard features and
versatility make this an ideal choice for amateur or commercial use.
The RM-10 Repeater Maker Includes:
Courtesy Beep or Roger Beep
Remote Repeat Inhibit
Compact Attractive Case
Adjustable Time-Out Timor
Power. COR (Carrier Operated Relay), and Push to Talk L.E.D.s
Connections for CTCSS Decoder/Encoder
(sub-audible tone squelch)
Repeat Inhibit Front Panel Switch
Inputs for Full or Half Duplex Telephone Interconnect
MAKE SURE RADIOS ARE IN PROPER WORKING ORDER AND SUITABLE FOR THE
APPLICATION BEFORE BEGINNING INSTALLATION OF THE REPEATER MAKER. PROBLEMS RELATED TO
PROPER ANTENNA SEPARATION AND/OR DUPLEXERS AND MEASURES TO ELIMINATE RECEIVER DESENSING
SHOULD BE ADDRESSED BEFORE ATTEMPTING TO PUT ANY REPEATER ON THE AIR.
All connections to the radio equipment are made via the rear panel edge
connector. Care should be taken when soldering wires to the connector to avoid possible
shorts between pins which could damage the Repeater Maker and radio equipment. An optional
40 inch cable with a mating connector is also available from CES. This cable significantly
simplifies installation and allows for positive connection and disconnection.
DO NOT MAKE ANY CONNECTIONS UNTIL READING THE ENTIRE MANUAL. CONNECTIONS
FOR RECEIVE AUDIO AND COR (CARRIER OPERATED RELAY) ARE ESPECIALLY IMPORTANT TO FULLY
UNDERSTAND BEFORE SET UP .
The following tables show all required and optional connections:
CARD EDGE CONNECTOR
CONNECTOR PIN FUNCTION/CONNECTION
1 +12 VDC / power supply +
2 Telephone Interconnect PTT (option)
3 TX CTCSS Tone / to transmitter if used
4 Receive audio / receiver discriminator *
5 -COR- / negative going COR *1
6 Key - no connection
7 Remote Tx Disable (optional - ground to disable)
8 Transmit Audio / to TX microphone high
9 Telephone Interconnect Tx Audio (option)
10 Telephone Interconnect Rx Audio (option)
11 +COR+ / positive going COR *1
12 PTT / Transmitter PTT
13 PTT Relay Normally Closed (not used)
14 PTT Ground / Transmitter Ground
15 Auxiliary Relay Common
16 Auxiliary Relay Normally Closed
17 Auxiliary Relay Normally Open
18 Ground / Power Supply Ground
OPTIONAL CABLE CONNECTIONS
CABLE WIRE COLOR CONNECTION/FUNCTION
WHITE BAND Shield Receiver Ground
RECEIVER Green Receiver or Discriminator Audio *
Brown COR-(neg.) *I
Orange COR+(pos.) *'l
Red +12 VDC
RED BAND Shield Transmitter Ground
TRANSMITTER Yellow Tx Audio
Orange CTCSS Tone (if deck is installed only)
Black PTT Ground
* Receiver or Discriminator Audio: The receiver audio connections should
be made directly to the discriminator output of the receiver before any filtering if
possible. If the COR connection is not made (see **I COR), discriminator audio must be
used. Also, if the receive audio connection is made to other than the discriminator,
capacitor C11 should be removed from the board to defeat the audio de-emphasis built into
the Repeater Maker. (see layout drawing).
** Carrier Operated Relay: COR connection is not mandatory (see above) but
is suggested if a COR signal is available in the receiver.
Only one of the COR connections is to be used. If the COR goes high when a
received signal is present connect the +COR+. If the COR goes low (ground) when a received
signal is present connect the -COR-. Negative going COR must go from greater than 2.5
volts DC to less than 1.5 volts DC. Positive going COR must go from less than 0.7 volts DC
to greater than 1.5 volts DC.
JUMPER PLUGS OR WIRE JUMPERS: Several functions or operational parameters
are controlled by jumper plugs or wire jumpers. See the assembly drawing for jumper
locations. The jumper programming is shown in the following table:
JUMPER FUNCTION AND INSTRUCTION
JP1 CTCSS - without CTCSS deck installed - IN
with CTCSS deck installed - OUT
JP2 CTCSS - No Tx Tone on repeater hang-time - IN
Tx Tone on repeater hang-Ume - OUT
(leave in if no tone deck)
JP3 PATCH - No telephone interconnect installed,
Normal - OUT
Telephone interconnect installed - IN
(disables repeat audio when patch PTT is
JP4 REPEAT AUDIO - More gain on Repeat audio - IN
Less gain on Repeat audio - OUT
JP5 COURTESY BEEP - Beep enabled - IN
or ROGER BEEP - Beep disabled - OUT
JP6 COURTESY BEEP - Immediate when carrier drops - IN
or ROGER BEEP - Approx. 1 second delay - OUT
JP7 TX AUDIO LEVEL - For High Impedance - IN
For Low Impedance - OUT
JP10 CTCSS TONE FILTER - No CTCSS Tone Deck installed-IN
- CTCSS Tone Deck installed - OUT Connect wires from Tone Deck as shown in
CTCSS - refers to optional Model TS-32P Encoder/Decoder. If the TS-32P is
used, install it as shown on the drawing, and program tone according to the chart in the
back of this manual.
Note:When using the TS-32P, if your application requires that both jumpers
JUI and JU2 on the TS-32P to be connected, then JUI should be replaced with a germanium
diode. Place the diode so that the cathode goes to the collector of Q1 and the anode goes
to the base of Q2
DO NOT CONNECT TONE OUTPUT, (E6) AND DO NOT REMOVE JP1 UNTIL AFTER THE
REPEAT AUDIO LEVEL HAS BEEN SET LATER IN THE SETUP PROCEDURE.
S1 switch bank controls timers for Hang-Time and Time-Out Timer. Switch S3
selects COR source used. Switch functions and timing are shown In the table below:
X-ON 0 - OFF
S1 SECTIONS 1 THROUGH 3 CONTROL REPEATER TIME TIMER.
(TIMES ARE APPROXIMATE)
30 sec. I min. 2.5 min. 3 min.
1 2 3 1 2 3 1 2 3 1 2 3
x x x x x 0 x 0 x x 0 0
7.5 min. 9 min. 10 min.
1 2 3 1 2 3 1 2 3
0 x x 0 0 x 0 0 0
S1 SECTIONS 4 THROUGH 6 CONTROL REPEATER HANG TIME.
(TIMES ARE APPROXIMATE)
No Hang-Time 1 sec. 2 sec. 3 sec.
4 5 6 4 5 6 4 5 6 4 5 6
x x x x x 0 x 0 x x 0 0
4 sec. 5 sec. 6 sec.
45 6 4 5 6 4 5 6
0x 0 0 0 x 0 0 0
S-3 SELECTS COR SOURCE.
A Position Repeater Maker COR (discriminator audio)
B Position External COR (radio's COR)
Connections should be made with the power to all equipment disconnected.
+12 Volts, DC, POWER SUPPLY - PIN #1
Connect to a source of regulated, filtered, positive 12 volts DC. If
separate power supplies are used for the transmitter and receiver units, the power source
for the Repeater Maker should be the one used to power the receiver. This will lessen the
chance of problems due to voltage fluctuations when the transmitter keys up or unkeys.
TELEPHONE INTERCONNECT PUSH TO TALK (option) - PIN #2
The Push To Talk lead from an Interconnect unit connects to this point if
TX CTCSS TONE/TO TRANSMITTER (if used) - PIN #3
If CTCSS is to be used on the repeater system and the optional TS-32
Encoder/Decoder board Is installed, this connection must be made to a suitable tone
injection point in the transmitter. Consult the manual and/or schematic for your
transmitter for this connection.
RECEIVE AUDIO/RECEIVER DISCRIMINATOR - PIN #4
Connect this pin to the discriminator of the receiver. Discriminator audio
is necessary for proper operation of the Repeater Maker's built in COR. If your receiver
has a suitable COR output (see COR sections) you may Connect the receiver audio to an
audio stage after the squelch control In the receiver. This is discouraged since the
receiver squelch control will control the repeater operation. If de-emphasized audio is
used it is necessary to remove C11 from the board to defeat the internal de-emphasis In
the Repeater Maker.
-COR-/NEGATIVE GOING COR - PIN #5
If the previous connection (pin #4) was made to Discriminator audio then
COR connections are optional. COR sources in the receiver must be measured before making
connections. Measure the DC voltage on the proposed source. If the voltage is greater than
2.5 VDC with the receiver squelched and it drops quickly to less than 1.5 VDC when the
receiver is unsquelched it is suitable for connection to PIN #5. If the voltage does not
meet the above parameters do not connect PIN # 5. If the voltage is less than 0.7 VDC with
the receiver squelched and it quickly rises to greater than 1.5 VDC when unsquelched then
the COR connection should be made to +COR+/PIN #11. If available COR sources do not fall
within either of the above parameters no COR connection should be made. If this is the
case the receive audio connection (previous step) MUST be made to the discriminator.
REMOTE TRANSMITTER DISABLE - PIN #7 (optional) Ground to disable
TRANSMIT AUDIO - PIN #8
Connect to transmitter Microphone High Input.
TELEPHONE INTERCONNECT TRANSMIT AUDIO - PIN #9 (option)
The Transmit Audio lead from a telephone Interconnect unit is connected to
this point if used.
TELEPHONE INTERCONNECT RECEIVE AUDIO - PIN #10 (option)
The Receive Audio lead from an interconnect unit is connected to this
point if used.
+COR+/POSITIVE GOING COR - PIN #11
SEE CONNECTION INSTRUCTIONS FOR -COR- PIN #5 (above)
PTT /TRANSMITTER PUSH TO TALK - PIN #12
Connect a wire from this pin to the Push To Talk line of the Transmitter.
Usually this is connected at microphone PTT.
NO CONNECTION IS MADE TO PIN #13
PTT GROUND - PIN #14
Most transmitters use ground for transmitter keying. In this case PIN #14
is connected to the transmitter's ground. Some radios require positive voltage for keying
the transmitter. In this case PIN #14 should be connected to that voltage source in the
AUXILIARY RELAY COMMON - PIN #15 (optional)
AUXILIARY RELAY NORMALLY CLOSED - PIN #16 (optional)
AUXILIARY RELAY NORMALLY OPEN - PIN 817 (optional)
This is a spare set of relay contacts that works with the push to talk of
the Repeater Maker.
GROUND/POWER SUPPLY GROUND - PIN #1 8
Connect a wire from this point to the power supply negative or receiver
ground. It is recommended that both radio and the RM-10 have their grounds (and/or
chassis) connected together.
IV. ADJUSTMENT AND TESTING: ALL TESTING SHOULD BE DONE WITH THE
TRANSMITTER CONNECTED TO A SUITABLE DUMMY LOAD.
This adjustment is made if the receive audio is connected to the
discriminator and the internal COR in the Repeater Maker is being used. (check S3).
Disable the transmitter via the TX Disable switch on the front panel of the Repeater
Maker. Turn on the power supply and radio. Observe the COR LED and turn the COR Threshold
control (R5) unfit the LED goes on. Turn the control back until the LED just goes off. The
COR is now set correctly.
If the COR of the receiver is being used instead of the Repeater Maker
then this adjustment is made by setting the squelch control on the radio to threshold.
Inject a strong (10uV) on frequency signal modulated with 1 KHz tone at 4
KHz deviation into the receiver. Set the Repeat Audio control (R8) at approximately the
midpoint of its range. Enable the transmitter (front panel switch) and adjust the Repeat
Audio control for 4 KHz deviation measured with a deviation motor on the transmitter
output. If it is difficult to obtain a 4 KHz output jumpers may have to be removed as
follows: If deviation is above 4 KHz and the control is at minimum then remove JP4 and
readjust. If deviation is below 4 KHz and the control is at maximum then remove JP7 and
COURTESY BEEP or ROGER BEEP: (if enabled)
Apply and remove the signal from the receiver and listen for the courtesy
beep. If adjustment is needed, repeatedly inject a signal into the receiver and remove it
to activate the beep. Adjust the BEEP control (R33) between beeps until the desired level
CTCSS (if used):
With power removed from the RM-10, remove JP10 (wire jumper) and install
the TS-32 as shown in the layout drawing. Program the desired CTCSS tone according to the
chart on the following page. Remove JP1 to enable CTCSS tone decode function. Only signals
modulated with the proper CTCSS tone will be repeated. Make sure all connections have been
made properly and power up the RM-10 and radios.
Inject an on frequency signal modulated with the proper CTCSS tone into
the receiver. The transmitter will turn on as long as the correct tone is present. Observe
the transmitter output deviation and set the tone output level.
TELEPHONE INTERCONNECTS: Follow normal installation procedure for the
Interconnect unit except that connections are to be made to the appropriate inputs and
outputs of the Repeater Maker instead of the radio. JP3 should be in place for
interconnect use to disable repeat audio when the Interconnect PTT Is present.
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