MGL Avionics V10 Operating manual

MGL Avionics
VHF Air band transceiver
V10
User and installation manual
Issue 1, March 2009

General
Please read this manual before operating the V10 transceiver
Please include this manual if ownership of the V10 transceiver changes
Operational limitations, conditions and restrictions
Do not operate this device outside of its specified temperature range – this ma result in
malfunction or damage to the device.
Observe the installation wiring diagrams. Incorrect wiring ma damage this device.
Never operate this device outside of its specified voltage range. Doing so ma cause serious
damage to this device.
At all times ensure that no reverse power polarit is applied to this device. Reverse polarity
will destroy this device.
This transceiver is designed to withstand the possible power surges that ma be generated in
a correctl wired power suppl s stem in a t pical aircraft. For this reason the transceiver ma
be left switched on when engines are started. Please note that the suppl voltage ma drop
below minimum operating voltage during engine cranking. During this time operation of the
radio will not be possible.
The V10 transceiver is not FAA certified for use in certified aircraft. This device ma onl be
used in aircraft where such a device is permitted under local rules.
T picall these rules permit operation in non-t pe certified aircraft such as home built and
experimental or sport categor aircraft.
Limitations ma exist on maximum altitudes a non-certified air band transceiver ma not be
operated above. Please check our local rules with the relevant authorities.
Use of this radio ma be subject to a radio station license. Please contact our local radio
frequenc spectrum governing bod (such as the FCC) as to the procedures required to
obtain a radio station license.
Operation of this transceiver ma onl be allowed b persons holding a valid radio license
(restricted or full).
Please do not operate this transceiver illegall .
Please do not operate this transceiver in an environment or in conditions where its
transmissions ma cause interference with other electronic equipment or s stems.
Never operate an air band radio without the required qualifications to do so.
Never cause a nuisance to aircraft on the ground or in the air b misuse of this transceiver in
an wa .
Never compromise the safet of other aircraft with length transmissions. Keep our
transmissions short and to the point following established air to air and air to ground rules and
procedures.

FCC state ent
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device ma not cause harmful interference, and (2) this device must
accept an interference received, including interference that ma cause undesired operation.
This transceiver has passed laborator tests to FCC rules part 2, part 15 and part 87 as
applicable.
This transceiver is registered with U.S. FCC under the following FCC ID: WSJV10
TSO qualifications
This transceiver is designed to meet he following TSO standards:
TSO-C37D, TSO-C38D, TSO-C128
DO160 qualifications
This transceiver is designed to the following EUROCAE ED-14D / RTCA DO-160D standards:
Section 4: Categor C1. No external cooling required.
Section 5: Categor C
Section 6: Categor A
Section 7: Categor B (shock and crash safet )
Section 8: Categories R and U
Sections 9-14: Categor X – not required
Section 15: Categor Z
Section 16: Categor A and B
Section 17: Categor A
Section 18: Categor A and B
Section 19: Categor Z
Section 20: Conducted categor V
Section 21: Categor B
Section 22: Power: Categor A3C3, signals and digital comm: Categor A1C1
Section 23, 24: Categor X – not required

Table of Contents
General........................................................................................................................................2
Operational limitations, conditions and restrictions................................................................2
FCC statement............................................................................................................................3
TSO qualifications.......................................................................................................................3
DO160 qualifications...................................................................................................................3
The V10 transceiver introduction................................................................................................6
The V10 Panel.............................................................................................................................7
FLIP-FLOP mode....................................................................................................................7
Direct frequenc entr mode...................................................................................................8
Dual watch s stem..................................................................................................................8
Frequenc displa s.............................................................................................................9
The status displa ...............................................................................................................9
V10 voltage and temperature monitoring...........................................................................9
Stuck PTT.........................................................................................................................10
Transmit signal modulator................................................................................................10
The V10 menu structure............................................................................................................11
The V10 buttons........................................................................................................................12
The “menu” button................................................................................................................12
The “active” button................................................................................................................12
The “VOL/SQL” button..........................................................................................................12
The MHZ/KHZ/CH button.....................................................................................................13
Selecting frequencies................................................................................................................14
The channel database...............................................................................................................14
Changing channels...............................................................................................................14
The RX/TX bargraph.................................................................................................................15
The menu s stem......................................................................................................................15
First level menu functions.....................................................................................................17
Ambient noise suppression..............................................................................................17
Program channels............................................................................................................18
Contrast............................................................................................................................18
Microphone level..............................................................................................................19
Microphone bandpass filter..............................................................................................19
PTT Mode.........................................................................................................................20
Auxiliar input level...........................................................................................................20
Scanning state on power up.............................................................................................20
Setup menu entr .............................................................................................................20
Second level menu functions................................................................................................21
Main + Standb / Main onl / Standb onl ......................................................................21
Invert off / invert on...........................................................................................................21
TX MIC VOX / TX MIC HOT.............................................................................................22
TX LOCK ON / TX LOCK OFF.........................................................................................22
P-scan OFF / P-scan ON..................................................................................................22
Direct FS / Flip-Flop FS....................................................................................................22
1 MIC Level / 2 MIC Level................................................................................................22
COMM TX ON / OFF........................................................................................................23
Default..............................................................................................................................23

Frequenc lists..........................................................................................................................24
Dual watch receiver operation..................................................................................................25
Dual scan receiver operation....................................................................................................26
Installation.................................................................................................................................27
General installation notes.....................................................................................................27
D-15 connector pin out.........................................................................................................28
Principal wiring diagrams......................................................................................................29
Using two V10 transceivers in a dual watch configuration (1)..............................................30
Using two V10 transceivers in a dual watch configuration (2)..............................................30
Normal single transceiver installation...................................................................................31
Dual transceiver installation..................................................................................................31
Other installation options......................................................................................................31
Connecting RS232 communication links..............................................................................32
Connecting a MGL Avionics NAV receiver.......................................................................32
Using an external intercom s stem......................................................................................32
RF feedback – cause and elimination..............................................................................32
Dimensions................................................................................................................................34
MGL Avionics V10 transceiver binar communications protocol..............................................35
Version..................................................................................................................................35
General.................................................................................................................................35
General message format:.................................................................................................35
Commands:......................................................................................................................36
Format of Acknowledge message (sent b transceiver)..................................................40
Format of status message (sent b transceiver ever 120mS)........................................40
Specifications............................................................................................................................41

The V10 transceiver introduction
The V10 is a VHF Airband transceiver with a 6W carrier power transmitter enclosed in a 3.1/8”
standard aviation panel mount (front mount) of compact mounting depth and ver light weight.
A generousl dimensioned LCD displa provides clear frequenc and function information.
The receiver spans the frequenc range from 108 to 136.975Mhz (includes NAV frequencies)
while the transmitter covers the COM frequenc range from 118 to 136.975Mhz.
Up to 100 memor channels and 10 frequenc lists are provided in addition to direct
frequenc selection.
The V10 receiver is based on a commercial broadcast qualit s stem in a dual
superheterod ne configuration with a high first IF stage. Audio is demodulated using a
s nchronous demodulator resulting in ver high receive audio qualit .
The receiver can be operated as dual frequenc scanning radio.
The transmitter is based on a PDMOS output stage using a class D full digital modulator.
Modulation is entirel under microprocessor control allowing excellent carrier modulation
under all conditions. As a welcome side effect this results in a ver power efficient transmitter.
A unique, full digital PLL operating at around 5Ghz is used as highl stable and spectrall
ver clean source as local oscillator and transmit frequenc source. No frequenc calibration
is required during the lifetime of the V10 to remain within required tolerances.
The V10 receiver and transmitter circuits contain zero adjustment points and no line-up
procedure is required either during manufacture or during service life.
All audio processing is done in software using a high performance microprocessor using
digital signal processing principles. Conversion from and to analog is done using a 18 bit
CODEC.
A two circuit digital intercom s stem is included configured as pilot and passenger s stem.
Several advanced intercom options are included, made possible b the software
implementation of the s stem. Two independent ambient noise suppression s stems are
included, each can be adjusted for a wide range of applications.
The V10 user interface is specificall designed to be used under difficult conditions such as
found in open cockpit aircraft. Discarding common rotar knobs in favor of large, well spaced,
tactile buttons allows convenient operation of the V10 even with gloved hands.
The V10 further integrates ver comprehensive digital communications links allowing remote
control and downloading of frequenc databases.

The V10 Panel
The above picture shows the V10 transceiver in its most t pical application as “Flip-Flop”
frequenc selection s stem. The V10 transceiver can be operated in other modes depending
on its setup and installation.
FLIP-FLOP mode
In this mode ou change/edit the standb frequenc while receive and transmit operate on the
active frequenc . Active and standb frequencies ma be interchanged using the “Active”
Press this button to
enter the menus. Here ou
will find man adjustments
and setups
Pressing this button
exchanges active and
standb frequenc .
Note: holding this button
down enables further
functions
The current
active
frequenc
Increase
a value or
setting
Decrease
a value or
setting
Select volume or
squelch level to be
changed
Select MHZ, KHZ or channel to
be changed. Hold down this
button for 2 seconds to change
between MHZ/KHZ and Channel
mode. Hold down this button for
1 second when in MHZ/KHZ
mode to change between 50
and 25 KHZ tuning steps.
The current
standb
frequenc
Status bar showing volume or
squelch level, voltage or transmitter
temperature and active frequenc
selection mode

button.
Note: If scanning is enabled, it is also possible to receive on the standb frequenc .
Direct frequency entry mode
In this mode, onl the active frequenc is shown. Standb frequenc does not exist. All
changes/edits are done directl to the active frequenc . No scanning is possible.
Dual watch system
A dual watch s stem can be formed using two V10 transceivers (see installation section).
This is similar to a single V10 operating in dual scan mode.
In effect, active and standb frequencies are spread over two transceivers making use of the
second receiver in the standb s stem.
The active s stem controls volume. The standb s stem controls its own squelch setting.
The dual watch s stem can be operated from either panel however each s stem retains its
own menu s stem.
Memor channels from the active s stem are used. Memor channels on the standb s stem
are not used. The standb s stems transmitter is not used.
It is possible to connect a dual watch s stem in a full redundant wa . In this case either
s stem can be operated as a normal dual scan transceiver in case the other s stem is not
functional.

Frequency displays
Frequencies are displa ed as 6 digit numbers. The first three digits show the MHZ part of the
frequenc in the range of 108 to 136. The last three digits shows the KHZ part of the
frequenc . In case of the European 8.33Khz channel spacing, the frequenc ma be shown
rounded to the nearest KHZ:
Examples:
122.008 = 122.00833 Khz
131.533 = 131.53333 Khz
118.292 = 118.29166 Khz
The status display
The bottom section of the displa contains a variable content status.
Pressing the VOL/SQL button will change between Volume and Squelch setting. If ou press
the VOL/SQL button to return from squelch setting to volume setting, the squelch will briefl
open regardless of its setting (receiver static test).
V10 voltage and te perature onitoring
The V10 transceiver monitors the DC voltage at its suppl terminals. The result of the voltage
measurement is used to set the output power of our transmitter and is also used to control
modulation of the transmit carrier to make optimal use of the available power.
A voltage below 11.0V will result in a “>LOW<' indication alternating with the voltage displa .
Your V10 transceiver will be able to use the transmitter to below 10V. At 10V a useful 4W of
t pical carrier power is available (low voltage emergenc operation). Full power is achieved at
13.8V and higher input voltages while rated power is achieved at around 13V t picall (varies
slightl between units and frequenc tuned).
Current audio volume
setting. Pressing the up/
down arrow ke will
change the volume. DC voltage level at
suppl input, alternates
with internal temperature
in degrees Celcius.
Frequenc entr mode:
50K tuning steps MHZ/KHZ
25K tuning steps MHZ/KHZ
CHL Channels
LST Frequenc Lists

The V10 transceiver monitors the temperature of the transmitter power stage. The result of
this measurement is alternated with the voltage displa . The V10 transceiver is designed to
prevent transmitter damage due to overheating caused b misuse, ver badl matched
antennas or antenna cable wiring faults.
As a temperature of 70 degrees Celsius is reached power is graduall reduced, reaching a
minimum of about 4W carrier power if the temperature is higher than 95 degrees Celsius at
the transmitter power transistor.
Stuck PTT
The V10 transceiver is designed to automaticall disconnect the PTT if the transmitter is
continuousl ke ed for more than 35 seconds. In this case the “>>>STUCK PTT<<<'
message will show on the displa and the transmitter is switched off and the transceiver
returns to receiver mode.
If it was the intention to transmit for more than 35 seconds, simpl let go of the PTT and ke
again to start a new 35 second c cle. There is no limit to the number of 35 second c cles
allowed.
Trans it signal odulator
The V10 transmitter has a digital modulator that is directl under microprocessor control. The
audio signal to be transmitted is processed using digital signal processing algorithms before
being presented to the transmitter.
Software control of the modulator allows the s stem to control modulation under var ing
power and temperature conditions. It also allows wide range control of the audio signal
strength (amplitude) to the modulator. This allows effective prevention of over modulation
while at the same time allowing deep and rich modulation of the carrier frequenc . This results
in ver good audio qualit of the transmitted signal and consequent extension of effective
range of the transmitter.