MIRA's Repeater System

This document itemizes the user functions available to members of the Mid Island Radio Association ( MIRA ) using our VHF Repeaters, VE7RPQ. We possesses two repeaters, each on 145.370 output 144.770 input. One repeater is a Motorola 'Motrac' rig of 1970's vintage. It is controlled by a modern digital repeater controller. The other repeater is a 1990's Kendecom repeater package with the matching controller. Both systems provide repeater programmability and autopatch capabilities. The Kendecom has synthesised voice capability whereas the Motorola only responds in morse code. We interchange the repeaters as the need for servicing dictates. The command sequences are somewhat different so you need to know which repeater is running to operate the user commands. The courtesy tone on the Motorola is lower than that of the Kendecom. Also, the Motorola will acknowledge commands in morse code while the Kendecom will 'talk to you' with its' synthesized voice.

Currently both repeaters are set up for COR (Carrier Operated Relay) access thru a remote receiver on the Qualicum Beach water tower. Our system is 'open to all users'. If in range, you will hear the squelch tail of the repeater after you trigger the repeater by depressing and releasing your microphone button. You can talk through the repeater almost as if you were operating simplex.

Most of your conversations will occur in this simple mode. However you also have the capability to control the repeater and access a telephone line by sendiing DTMF tones with the keypad on your radio. Please refer to the User Function List below. for details.


Kendicom / Motorola Layout - Trillium Lodge 2005

The block diagram below indicates how we maintain a 'backup' repeater adjacent to the 'active' repeater so that change over can be quickly implimented.

You will note at the bottom of the diagram the 'automatic switch over to battery' system in the event of a failure of 110vac power at the site. It is anticipated that the 'cat' battery will allow the repeaters to operate at low power for about 12 hours after which some means of recharging must be established.


Power dropout relay

This device is attached to the trolley that supports the 12vdc battery and charger. The trolley rests under the duplexer table, to the left of the repeater cabinet. It can be rolled out for servicing.

The diagram below is a copy of the label attached to the bottom of the Power dropout relay.


Kendicom Setup

The diagram below indicates the connections that must be adjusted when the Trillium Kendicom repeater is changed from 'direct recieve' operation to 'link receive'

The lower diagram indicates the approximates settings of front panel controls and switches when the Kendicom is in normal operation.


Micor Setup

This diagram shows our homebrew voting card as set to operate the Motorola backup repeater. It is hoped that, as suggested in the block diagram above, that we will be able to modify this circuit to accomodate both repeaters but at the time of writing this initiative has yet to be pursued.


Repeater Modifications - Motorola - to be added


Repeater Modifications - Kendicom

The diagram below shows an early modification to the Kendicom to improve the squelch action.


Packet Radio Node

The diagram below indicates the transceiver to TNC interconnections at the packet radio stations VA7MIR and VE7MIR located at the Emergency Operations Centres in Parksville and Qualicum Beach. A similar interconnection exits for VE7CVR ( Qualicum Beach Civic Centre ) packet station.



                          VE7RPQ USER'S FUNCTION LIST


CAUTION!  All stations using the tone pads for autodial, or other uses, MUST
IDENTIFY PRIOR TO  USING THE TONE PAD.  For example:  "VE7DSN for autopatch"  or
"VE7DSN for tone pad test"

                         Phone Patch Procedure
           Motorola                                Kendecom

1. Identify yourself as above          1. Identify yourself as above
2. Enter 11 phone number + *           2. Enter 1101 + phone number
3. Conduct phone conversation          3. Conduct phone conversation
4. Hang up by sending  #               4. Hang up by sending   #111
5. Announce 'clear autopatch'          5. Announce 'clear autopatch'

   Note You can subsitute  'autodial' (3 digit preprogrammed number)  for the
        full 7 digit phone number.  Our patch is set up to only accept 7 digit
        (local) numbers plus several emergency service numbers.

Phone Muting       This function provides that when a user is making a telephone
call  through the autopatch, the transmission from the radio to the repeater is
not broadcast, but is sent directly to the phone line.  The transmission from
the phone line to the repeater is of course retransmitted by the repeater.  This
function provides some measure of privacy to the user.

Motorola Access Code  _Not enabled_    Kendecom Access Code      ____ # _____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Unmute/Buffer Clear.  This function clears the above phone
muting function, and should  be used after a muted autopatch call has been
completed.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____ * _____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

User Function Clear.  This function clears all access codes that are not cleared
by other  specific codes.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____ #50 _____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Autopatch Clear.  This function clears the autopatch, and must
be used after all  autopatches are complete.

Motorola Access Code  _____ # _____    Kendecom Access Code      ____#111 ____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Timer Reset/Wakeup.  This function will reset the repeater
timer if the repeater has been  timed out by an overly-long transmission. Also,
it will "wake up" the repeater which has been "put to sleep" by the Sleep Access
Code.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____________

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Autopatch Activate.  This function will active the autopatch.
When a user wishes to  place a telephone call via the primary autopatch, he must
first enter this access code, followed within 20 seconds by the number he wished
to call.  Only local numbers will be accepted by the autopatch.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ___ 1101 ____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Secondary or tertiary Pre-dial Autopatch Activate.  These two
functions may have pre-programmed  into them, a portion of frequently called
numbers.  To use these functions, the user would first enter either access code,
followed by the remainder of the number which he wishes to call.  For example,
if the user wishes to call 555-1234, and this number has been pre-programmed
into the autopatch memory, all that is required to be entered is the access code
followed by 1234.

Motorola Access Code  _ Not enabled _  Kendecom Access Code  __ Not Enabled _____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 


Access Code ____. Redial.  This function automatically redials the last
telephone number called.  However,  it must be remembered that the autopatch
must be cleared after every call, successful or otherwise, before a second call
can be made.

Motorola Access Code  ___ 1184* ___    Kendecom Access Code      ___ 1104 ___

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Autodial/extended autodial Procedure

Emergency telephone numbers or individual user telephone numbers have been or
will be programmed into a  three digit code.  All the user has to do to call one
of the emergency services or his/her own telephone is to enter the assigned 3
digit code, and the call will be placed to the 911 service

Motorola Access Code  ___ 711  ____    Kendecom Access Code      ___ 711 ____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 


Reverse Autopatch

Reverse autopatch gives access to the repeater from the telephone network by
answering incoming calls on  the repeater telephone line 954-3820, for the
purpose of contacting other repeater users or for activating functions.  To
contact another repeater user, the REVERSE AUTOPATCH ALERT  access code,
described below must be used.  To activate functions, the user must first dial
the repeater phone, and then enter the desired function access code.

Motorola Access Code  _ Not enabled _  Kendecom Access Code      ____________


Access Code ____. Reverse Autopatch Alert.  After the repeater answers the
telephone the access code  must be entered.  The repeater will then transmit an
alert signal.  This will inform a listener that a call has been placed, and he
should enter the Autopatch Activate Access Code ____, to complete the
connection.

For Reverse Autopatch to users with an assigned users number, the caller can use
that user's assigned  number instead of the ____ access code, in which case the
repeater will then broadcast a specific alert to that user that a reverse
autodial call is on hold for them.

In all cases a Reverse Autopatch call must be answered with the ____ autopatch
activate access code, within  15 seconds of the alert being placed, or the
repeater will terminate the call.

Motorola Access Code _ Not enabled _   Kendecom Access Code      ____________

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Sleep.  This function will put the repeater to sleep when it
has been operating in the  "wake-up" mode.  When this code is entered,
transmitter operation will cease, and no tail is sent.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____________

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Play Informational Message.  This function will allow users to
access pre-programmed  information.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ___ 1108 ___

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Clock Time Announcement.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      __ 1109 ____

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Echo function.  The Echo Function has been superseded in the
latest software from the  Kendecom Corporation, and is no longer available on
this access code.  This access Code has now been assigned to a BCD control
function.  Users wishing to hear the quality of their own transmissions can do
so by sending themselves a message using the Message Master system, and then
playing it back to themselves to determine their signal quality.  This procedure
is described later in the user Mailboxes section.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____________

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____.  Message Callup.  This code will cause the repeater to
transmit a list of any outstanding  messages.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____________

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

Access Code ____. Signal Readout.  This function allows repeater users to get a
readout of their signal  criteria, as read by the repeater.  This function will
stay active until it is cleared by the user function clear access code.  To
obtain the readout, first enter the access code, then release the PTT button.  A
readout will be heard, but should be disregarded.  Next, key the repeater and
speak for a minimum of five seconds. Release the PTT button, and the repeater
will respond with a readout of your signal.

The readout will occur on the tail of the transmission.  The deviation will be
the peak deviation which occurs  during the first 5 seconds of your
transmission.

The report will take the form as in the following example: "Check four point 5
kilohertz, S nine, frequency  one kilohertz low."  Several users may check their
signals while the function is still active.  In this case it is not necessary to
re-enter the access code each time

Deviation of the Tone Pad tones can be checked in the same manner as voice
modulation.  Tone pad tones  should not exceed 3.5 KHz deviation.

Last user should turn off the function using the Clear User Function Access Code
_____.


Motorola Access Code  ____ N/A ____    Kendecom Access Code      ___ 1120 ___

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 


Access Code ____. Tone Pad Tests.  This function tests the tone frequencies
transmitted by the user's  DTMF tone pad.  Once the function has been activated
by entering the access code, seven tests may be used individually or in
combination to test all rows and columns (not including column 4) of the tone
pad.  A single faulty digit can be found with this test.  The seven test codes
are as follows: 123, 456, 789, #0*, 147, 258, 369   NOTE: the first three test
codes are entered from left to right, while the fourth is entered from right to
left.  The test is done by entering any one of the test codes, then listening to
the repeater's response.  If the test code is accepted the repeater will respond
"OK."  Then the next row or column can be checked.

As with the Signal Readout function, this function will remain active until
cleared, so the last user should  clear the repeater with the Clear Users
Function access code _____.

It has been noted that some sets have had trouble accessing the repeater with
their tone pads.  A couple of  things should be noted.  Firstly, on some rigs,
the microphone is still active when the tone pad is in use, so do not talk while
you are entering tones.  Secondly, Kendecom recommends that the deviation on
tone pad tones be not more that 3.5 KHz, and that the audio level coming off the
tone pad be adjusted to within this limit.

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ___ 535 ___

 - - - - - - - - - - - - - - - - - - -  - - - - - - - - - - - - - - - - - - - 

User Mailboxes

The autodial access code that has been assigned to a user will also be used to
activate the repeater's Mailbox  capability, when followed by a suffix digit in
the range 1 thru 3.  For example, the access codes used by the repeater user who
is assigned access code xxx would be: XXX  Activate extended autodial XXX1 Play
mailbox messages XXX2 Record a mailbox message XXX3 Erase mailbox messages

Assume that I wish to leave a message for user XXX. He has told me that he is
assigned access code XXX. To do this I simply enter his record access code XXX2
and speak the message (limit 30 seconds).  Speak the message immediately after
entering the code, do not unkey your transmitter until the entire message is
spoken.  When I am finished the repeater will acknowledge a successfully
recorded message with a short tone burst.

When user XXX gets a chance to check for his messages, he does so by entering
his Play Mailbox Messages  access code XXX1.  If any messages have been stored,
the repeater will play them back to him.  If no messages are stored, the
repeater will indicate that with a short tone burst.

After user XXX has heard his messages, he can clear them from the repeater
memory by entering his Erase  Mailbox Messages access code XXX3.  This should be
done to save memory in the repeater.  The repeater controller has been
programmed so that, on a periodic basis, it will advise of any outstanding
messages being held.  If none are on hold, the repeater will advise "No
Messages."

Motorola Access Code  ____ N/A ____    Kendecom Access Code      ____________


The preceding describes all the user functions currently available from the
VE7RPQ repeaters.  Additional  user functions will be activated when required
and available.


Quick Command list
                                       Motorola            Kendecom
-------------------------------------- ------------------- ---------------------
User Password (1995)                   11                  11
Command terminator                     *
Clear or abort command key (p.3-5)     #
Autopatch call                         11 + Number + *     11 + Number
Hang up Autopatch                      #                   #111
Autodial                               3 digit number + *

Emergency Service Autdial numbers:

Call 911                               711 + *               711 + *

Return to [ Repeaters ] page

Created Feb 2000 for the Mid Island Radio Association by Frank Gibbons - VE7DSN
Revised 16 Jul 2005 by Frank Gibbons VE7DSN