Federal Signal Corporation PA300 Series 690009 Quick guide

Model PA300 Series
Electronic Siren
Models 690000, 690001, 690002, 690004
2561788A
Rev. A3 0520
© Copyright 2004 - 2020 Federal Signal Corporation
Installation and Instruction Manual

Limited Warranty
This product is subject to and covered by a limited warranty,
a copy of which can be found at www.fedsig.com/SSG-Warranty.
A copy of this limited warranty can also be obtained by written
request to Federal Signal Corporation, 2645 Federal Signal Drive,
University Park, IL 60484, email to [email protected] or
call [phone].
This limited warranty is in lieu of all other warranties, express or
implied, contractual or statutory, including, but not limited to the
warranty of merchantability, warranty of tness for a particular
purpose and any warranty against failure of its essential purpose.
2645 Federal Signal Drive
University Park, Illinois 60484-3167
www.fedsig.com
Customer Support
Police/Fire-EMS: 800-264-3578 • [phone]
Work Truck: 800-824-0254 • [phone]
Technical Support 800-433-9132 • [phone]

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Tables
Table 1 Specications.................................................................................................................... 8
Table 2 Parameters........................................................................................................................ 8
Table 3 Kit Contents List............................................................................................................... 8
Table 4 TAP II Functions ............................................................................................................. 16
Table 5 Press and Hold Functions (Models 690000 and 690001)............................................ 17
Table 6 Press and Hold Functions (Models 690002 and 690004)............................................ 17
Table 7 Replacement parts ......................................................................................................... 18
Figures
Figure 1 Mounting Bracket Installation......................................................................................... 9
Figure 2 Rear View of PA300 ....................................................................................................... 10
Figure 3 Control Cable Wiring Diagram ..................................................................................... 11
Figure 4 Horn Ring Connections ................................................................................................ 11
Figure 5 Press-and-Hold Modication - Factory Conguration............................................... 13
Figure 6 Press-and-Hold Modication - Air Horn Conguration.............................................. 14
Figure 7 Relative PA Loudness ................................................................................................... 14
Figure 8 Front View ...................................................................................................................... 15
Figure 9 Internal View .................................................................................................................. 19
Contents
Safety Messages for Installers and Operators ............................................................................. 4
Overview........................................................................................................................................... 7
Unpacking ........................................................................................................................................ 8
Installation........................................................................................................................................ 9
Testing the Installation.................................................................................................................. 15
Operating the Unit ......................................................................................................................... 15
Getting Technical Support and Service....................................................................................... 17

44 Model PA300 Series Electronic Siren
Federal Signal www.fedsig.com
Safety Messages for Installers and Operators
Safety Messages for Installers and Operators
For your safety, read and understand this manual thoroughly before installing, operating,
and servicing the Pathfinder siren amplifier/relay module. The safety messages presented
in this chapter and throughout the manual are reminders to exercise extreme care at
all times. In addition, read and understand the safety instructions to installers (doc. no.
256A692), and keep it close at hand for reference.
To download copies of this manual, go to www.fedsig.com or call the Federal Signal
Service Department at 1-800-433-9132 (708-534-3400) 7 a.m. to 5 p.m., Monday through
Friday (CT).
Safety Messages to Installers of Sound Systems
People’s lives depend on your proper installation and servicing of Federal Signal
products. It is important to read and follow all instructions shipped with this product.
Listed below are some other important safety instructions and precautions you should
follow.
Before Installation
Qualifications
• To properly install an electronic siren, you must have a good understanding of
automotive electrical procedures and systems, along with proficiency in the
installation and service of safety warning equipment. Always refer to the vehicle’s
service manuals when performing equipment installations on a vehicle.
Sound Hazards
• • Your hearing and the hearing of others, in or close to your emergency vehicle,
could be damaged by loud sounds. This can occur from short exposures to very
loud sounds, or from longer exposures to moderately loud sounds. For hearing
conservation guidance, refer to federal, state, or local recommendations. OSHA
Standard 1910.95 oers guidance on “Permissible Noise Exposure.”
• All eective sirens and horns produce loud sounds (120 dB) that may cause
permanent hearing loss. Always minimize your exposure to siren sound and wear
hearing protection. Do not sound the siren indoors or in enclosed areas where you
and others will be exposed to the sound.
• Federal Signal siren amplifier/relay modules and speakers are designed to work
together as a system. Combining a siren and speaker from dierent manufacturers
may reduce the warning eectiveness of the siren system and may damage the
components. Verify or test your combination to make sure the system works together
properly and meets federal, state and local standards or guidelines.
During Installation
• Do NOT get metal shavings inside the product. Metal shavings in the product can
cause the system to fail. If drilling must be done near the unit, place an ESD approved
cover over the unit to prevent metal shavings from entering the unit. Inspect the unit
after mounting to be sure there are no shavings present in or near the unit.

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Safety Messages for Installers and Operators
• Do NOT connect this system to the vehicle battery until ALL other electrical
connections are made, mounting of all components is complete, and you have verified
that no shorts exist. If wiring is shorted to vehicle frame, high current conductors can
cause hazardous sparks, resulting in electrical fires or flying molten metal.
• Ensure that the siren amplifier/relay module and speaker(s) in your installation have
compatible wattage ratings.
• In order for the electronic siren to function properly, the ground connection must be
made to the NEGATIVE battery terminal.
• Sound output will be severely reduced if any objects are in front of the speaker. If
maximum sound output is required for your application, ensure that the front of the
speaker is clear of any obstructions.
• Install the speaker(s) as far forward on the vehicle as possible, in a location that
provides maximum signaling eectiveness and minimizes the sound reaching the
vehicle’s occupants. Refer to the National Institute of Justice guide 500-00 for further
information.
• Mounting the speakers behind the grille will reduce the sound output and warning
eectiveness of the siren system. Before mounting speakers behind the grille, make
sure the vehicle operators are trained and understand that this type of installation is
less eective for warning others.
• Sound propagation and warning eectiveness will be severely reduced if the speaker
is not facing forward. Carefully follow the installation instructions and always install the
speaker with the projector facing forward.
• Do NOT install the speaker(s) or route the speaker wires where they may interfere
with the operation of airbag sensors.
• Installation of two speakers requires wiring speakers in phase.
• Never attempt to install aftermarket equipment, which connects to the vehicle wiring,
without reviewing a vehicle wiring diagram available from the vehicle manufacturer.
Ensure that your installation will not aect vehicle operation and safety functions or
circuits. Always check vehicle for proper operation after installation.
• Do NOT install equipment or route wiring or cord in the deployment path of an airbag.
• If a vehicle seat is temporarily removed, verify with the vehicle manufacturer if the
seat needs to be recalibrated for proper airbag deployment.
• Locate the control head so the vehicle, controls, and microphone can be operated
safely.
• When drilling into a vehicle structure, ensure that both sides of the surface are clear
of anything that could be damaged. All drilled holes should be deburred and all sharp
edges should be smoothed. All wires going through drilled holes should be protected
by a grommet or convolute/split-loom tubing. Additionally, all exterior drilled holes
must be sealed with Motorcraft seam sealer T-A-2-B or equivalent to prevent the
potential exposure to carbon monoxide or other potentially harmful fumes. Failure to
observe this warning could cause serious injury or death.

66 Model PA300 Series Electronic Siren
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Safety Messages for Installers and Operators
After Installation
• After installation, test the siren and light system to ensure that it is operating properly.
• Test all vehicle functions, including horn operation, vehicle safety functions and
vehicle light systems, to ensure proper operation. Ensure that installation has not
aected vehicle operation or changed any vehicle safety function or circuit.
• After testing is complete, provide a copy of these instructions to the instructional sta
and all operating personnel.
• File these instructions in a safe place and refer to them when maintaining or
reinstalling the product.
• Failure to follow all safety precautions and instructions may result in property damage,
serious injury, or death.
RETAIN AND REFER TO THESE MESSAGES
Safety Messages to Operators of Sound Systems
People’s lives depend on your safe operation of Federal Signal products. It is important
to read and follow all instructions shipped with the products. Listed below are some other
important safety instructions and precautions you should follow.
• Do not attempt to activate or deactivate the system control while driving in a
hazardous situation.
• Although your warning system is operating properly, it may not be completely
eective. People may not see or heed your warning signal. You must recognize this
fact and continue to drive cautiously.
• Situations may occur that obstruct your warning signal when natural and manmade
objects are between your vehicle and others, such as raising your hood or trunk lid. If
these situations occur, be especially careful.
• All eective sirens and horns produce loud sounds that may cause, in certain
situations, permanent hearing loss. You and your passengers should consider taking
appropriate safety precautions, such as wearing hearing protection.
• It is important that you fully understand how to safely operate this warning system
before use.
• Operate your vehicle and its sound system in accordance with your department’s
Standard Operating Procedures.
• If a selected function does not perform properly or if any of the lamps remain
illuminated when the control is o, disconnect the power connector from the control
unit and contact the nearest service center.
• At the start of your shift, ensure that the entire warning light system and the siren
system are securely attached and operating properly.
• Failure to follow these precautions may result in property damage, serious injury, or
death.
RETAIN AND REFER TO THESE MESSAGES

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Overview
Overview
The Federal Model PA300 Series is a precision built, ecient and economical, full-
featured electronic siren of advanced design. It provides wail, yelp, hi-lo (Models 690000
and 690001) or priority (Models 690002 and 690004) siren tones, as well as the Tap II
feature, public address (PA), radio rebroadcast and an air horn sound.
The siren should be installed in negative ground vehicles with 12-volt electrical systems.
It is protected against failure modes (including reversed polarity) by a fuse that is
replaceable without tools. No components protrude from the bottom of the siren to
interfere with mounting arrangements.
A noise cancelling microphone is wired in (Models 690000 and 690002) to prevent
loss or theft. It provides high quality voice reproduction without feedback “squeal.” The
microphone push-to-talk switch overrides any siren signal for instant PA use. PA and radio
volume are adjustable by means of a front panel GAIN control. Radio interconnect wires
are built in. No additional cables are required. Models 690001 and 690004 are supplied
with a microphone jack. To use the PA functions, order the optional Model MNCT-SC
microphone.
The Model PA300 Series can drive one 11-ohm impedance, high power (100 W) or low
power (58 W) speaker.
The Tap II feature enables the driver to change the siren sound from wail to yelp (or
vice versa) via the vehicle’s horn ring. Tap II provides especially eective trac clearing
capability. In addition to Tap II, additional alternate sounds can be activated in two other
selector switch positions by pressing and holding the horn ring for as long as the alternate
sound is desired. The charts in Section IV of this manual illustrate the operation of these
features more fully.
Other special features of the Model PA300 Series include:
• A high degree of reliability is achieved through the use of integrated circuits and
silicon output transistors.
• The control panel is illuminated with LEDs.
• The printed circuit board provides improved performance and durability under a wide
range of environmental conditions.
PA300 Series Models
• 690000: 12 V, 100 W, HI-LO with microphone
• 690001: 12 V, 100 W, HI-LO with microphone jack
• 690002: 12 V, 100 W, PRIORITY with microphone
• 690004: 12 V, 100 W, PRIORITY with microphone jack

88 Model PA300 Series Electronic Siren
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Unpacking
Table 1 Specications
Input Voltage 11 Vdc to 15 Vdc
Polarity Negative ground only
Standby Current (MANUAL) 60 ma (typical)
Operating Temperature Range -30°C to +65°C
Operating Current (Wail mode) 10 amperes, max (at 13.6 Vdc)
(11 ohm load at high power)
Frequency Range (typical) 725 Hz to 1800 Hz
Cycle Rate (typical) Wail- 15 cycles/min
Yelp- 220 cycles/min
Hi-Lo 70 cycles/min (690000 and 690001)
Priority 1300 cycles/min (690002 and 690004)
Voltage Output (approx.) 64 VP-P
Dimensions (HWD) 2-1/2 x 6-1/2 x 8-1/2 in (6.35 x 16.51 x 21.59 cm)
Net Weight (incl. microphone) 4-1/2 lb (2.04 kg)
Shipping Weight 6-1/2 lb (2.94 kg)
NOTE: The following parameters were obtained with the radio input potentiometer and
GAIN control set at maximum.
Table 2 Parameters
Audio Frequency Range 300 to 10,000 Hz
Harmonic Audio Distortion (300 Hz
to 3,000 Hz)
10% max. all power levels from 1/2 to 50 W
(frequency response ±3 dB).
Input Impedance (Radio) 2000 ohms
Input voltage required to obtain 20
VRMS across speaker load (Radio)
0.3 VRMS
Unpacking
After unpacking the Model PA300 Series, examine it for damage that may have occurred
in transit. If it has been damaged, do not attempt to install or operate it. File a claim
immediately with the carrier, stating the extent of damage. Carefully check all envelopes,
shipping labels, and tags before removing or destroying them. Ensure that the parts in the
Kit Contents List are included in the package. Disposal of all shipping materials must be
carried out in accordance with national and local codes and standards. If you are missing
any parts, contact Customer Support at 1-800-264-3578, 7 a.m. to 5 p.m., Monday through
Friday (CT).
Table 3 Kit Contents List
Qty. Description Part No.
1Cable Assembly 1461360
2 1/4-inch Lockwasher 7074A015
2 1/4-20 x 1/2-inch screw 7002A008-08
1 Moutnting Bracket 85361059
1 Warning Label 1612339

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Installation and Maintenance Manual
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Installation
Installation
PROPER FUSING: To avoid damage to unit, ensure that it is properly fused, with an 20 A
in-line fuse and fuseholder installed in the red power cable lead.
Mounting Bracket
AIRBAG DEPLOYMENT: Do not install equipment or route wiring in the deployment path
of an airbag. Failure to observe this warning will reduce the eectiveness of the airbag or
potentially dislodge the equipment, causing serious injury or death.
The electronic siren comes equipped with a swinging bracket, which enables it to be
mounted in variety of positions. Positioning the bracket above the unit allows mounting
to the underside of the dash. Positioning the bracket below the unit permits mounting on
any horizontal surface.
The unit should be mounted in a position that is both comfortable and convenient to the
operator. Keep visibility and accessibility of controls in mind. See Figure 1.
Figure 1 Mounting Bracket Installation
L
290A4452-02
NOTE: Only one bracket
is supplied
1/4-20 X 1/2 in
Hex Hd. Cap
Screw
1/4-20 X 3/4 in Hex
Hd Cap Screw
1/4 in Split
Lockwasher
1/4-20 X 1/2 in Hex
Hd. Cap Screw
Mounting
Bracket
1/4 in Split
Lockwasher
1/4 in Split
Lockwasher
Microphone
Cable
CAUTION:
1/4-20 x 1/2 in
hex hd. cap
screw with
lockwasher
must be used as
shown. Longer
screw will cause
circuitry
damage.
Mounting Under Dash
1/4-20 Hex Nut
UNIT REQUIRES AIR FLOW: Do not install the siren in areas where the air ow is
restricted. Do not mount the unit near a heater duct or under the hood.

1010 Model PA300 Series Electronic Siren
Federal Signal www.fedsig.com
Installation
To install the unit under the dash:
1. Use the mounting bracket as a template and scribe two drill positioning marks at the
selected mounting location under the dash.
DRILLING PRECAUTIONS: When drilling into a vehicle structure, ensure that both sides
of the surface are clear of anything that could be damaged. All drilled holes should be
deburred and all sharp edges should be smoothed. All wires going through drilled holes
should be protected by a grommet or convolute/split-loom tubing. Additionally, all exterior
drilled holes must be sealed with Motorcraft seam sealer T-A-2-B or equivalent to prevent
the potential exposure to carbon monoxide or other potentially harmful fumes. Failure to
observe this warning could cause serious injury or death.
2. Drill two 1/4-inch diameter holes at the position marks.
3. Secure the mounting bracket to the dash with user-supplied 1/4-20 by 3/4-inch hex
head screws, 1/4-inch split lockwashers and 1/4-20 hex nuts as shown in Figure 1.
4. Secure the electronic siren to the mounting bracket with 1/4-20 by 1/2-inch hex head
screws and 1/4-inch split lockwashers as shown in Figure 1.
To avoid damage to the unit, the 1/4-20 by 1/2-inch hex head cap screws and the 1/4-inch
split lockwashers must be used as shown in Figure 1.
5. Tilt the unit to the desired position. Tighten the 1/4-20 by 1/2-inch hex head screws.
Power Cable
Wiring changes have been made that utilize a new type of power cable. If this unit is
used to replace an older PA300, use the optional cable adaptor (761300) to connect the
originally installed power cable to the new siren.
This unit is NOT designed as a replacement in a two-speaker installation. The siren
amplifier WILL be damaged if two speakers are installed.
Speaker
The unit is designed to operate with one 11-ohm impedance speaker or one low power
(58 W) speaker. See Figure 2.
Figure 2 Rear View of PA300
290A4452-03

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Installation and Maintenance Manual
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Installation
Damage to the unit will occur if speaker wires are improperly connected. NEVER
CONNECT the brown SPEAKER HIGH POWER (100 W) wire and orange SPEAKER LOW
POWER (58 W) wire together to the speaker(s).
Using 18 AWG wire, connect one speaker lead (58 W speaker to SPEAKER LOW POWER
or 100 W speaker to SPEAKER HIGH POWER) as shown in the Control Cable Wiring
Diagram, Figure 3. Connect the other speaker wire to the blue (SPKR, COM) wire.
Figure 3 Control Cable Wiring Diagram
Org (Spkr, Lo)
Brn (Spkr, Hi)
Wht (Horn)
Wht/yel (Horn Ring)
Brn (Ribbed) (Radio)
Brn (Non-ribbed) (Radio)
Zip Cord
8
9
5
4
2
1
Blu (Spkr, Com)
7
1 2 3 4 5
6 7 8 9 10
Red (Power +)
Blk (Ground -)
290A4452-04C
Radio
To allow incoming radio messages to be rebroadcast over the outside speakers, connect
the two brown zip cord leads (pins 1 and 2) across the two-way radio’s speaker.
Horn Ring
To use the siren's Tap II and Press-and-Hold features:
1. Locate the wire that connects the vehicle horn ring switch to the horn or horn relay.
Cut this wire.
2. Splice the white/yellow control cable wire (pin 4) to the horn ring side of the wire that
was cut in step 1. Insulate the splice with user-supplied wire nuts. See FIgure 4.
Figure 4 Horn Ring Connections
290A4452-05
Vehicle Horns Steering Column
To Battery
Relay (User Supplied)
Cut Wire
Sw
To Horn, Or Horn Relay
Control Cable Assembly
Wht
Wht/Yel To Horn Switch

1212 Model PA300 Series Electronic Siren
Federal Signal www.fedsig.com
Installation
The horn ring transfer circuit of the siren is capable of switching a maximum of 2 A. Some
vehicles do not have a horn relay and, consequently, will draw more than 2 A when the
vehicle horn is activated. Consult your vehicle service manual or a qualied mechanic
to determine the current required to activate the horn. If it is less than 2 A, perform the
procedure in step 3. If it is greater than 2 A, perform steps 4 through 10.
3. Splice the white control cable wire (pin 5) to the horn side of the cut wire. Insulate the
splice with a user-supplied wire nut.
4. Obtain a SPST relay of sucient contact current capacity to activate the vehicle horn.
Refer to Figure 4 while performing the following steps.
5. Mount the relay in a suitable location.
6. Connect the horn side of the wire cut in step 1 to the relay contact terminal.
7. Determine the “sense” of the vehicle’s horn ring activation circuit. Does the horn
circuit require a switched positive voltage or switched ground for activation?
8. Connect the relay wiper terminal to the positive or negative potential determined in
step 7.
9. Connect the white control cable wire to one end of the relay coil.
10. Connect the other end of the relay coil to the opposite potential of that connected to
the wiper in step 8.
Connecting to the Power Source
PROPER FUSING: To avoid damage to unit, ensure that it is properly fused, with an 20 A
in-line fuse and fuseholder installed in the red power cable lead.
The PA300 Series can operate only from a 12-volt negative ground vehicle electrical
system. Therefore, before making any electrical connections, determine the polarity of the
vehicle electrical system ground.
Power for the siren can be obtained from the vehicle’s power distribution center or
directly from the vehicle battery. If power is going to be obtained directly from the
vehicle battery, drill a hole in the vehicle firewall for the power lead to enter the engine
compartment. Place a grommet or similar device in the hole to protect the wire against
damage from rough edges.
DRILLING PRECAUTIONS: When drilling into a vehicle structure, ensure that both sides
of the surface are clear of anything that could be damaged. All drilled holes should be
deburred and all sharp edges should be smoothed. All wires going through drilled holes
should be protected by a grommet or convolute/split-loom tubing. Additionally, all exterior
drilled holes must be sealed with Motorcraft seam sealer T-A-2-B or equivalent to prevent
the potential exposure to carbon monoxide or other potentially harmful fumes. Failure to
observe this warning could cause serious injury or death.

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Installation and Maintenance Manual
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Installation
If your vehicle has a negative ground electrical system, perform the procedure as follows:
NOTE: This unit is NOT designed to operate with positive ground.
1. Route the red power (+) and the black power (-) control cable leads through the
previously drilled hole and into the engine compartment. Route the wires through
existing clamps and holders toward the battery.
2. To protect the red wire when connected to the battery terminal, use an in-line
fuseholder and 20-ampere fuse (not supplied). The fuseholder should be installed as
close as practical to the battery. If necessary, additional #14 AWG or heavier wire can
be spliced to the red lead.
SPARK HAZARD: If wires are shorted to the vehicle frame or each other, high current
conductors can cause hazardous sparks resulting in electrical res and molten metal.
Verify that no short circuits exist before connecting to the positive (+) battery terminal.
FIRE HAZARD: DO NOT connect this system to the vehicle battery until ALL other
electrical connections are made and mounting of all components is complete. Failure to
observe this warning may result in re, burns, and blindness.
3. Connect the in-line fuseholder lead to the positive (+) battery terminal.
4. Connect the black wire to the negative terminal of the battery.
Modifying Air Horn Press-and-Hold
The unit comes from the factory set so that the peak-and-hold sound will be heard when
the Selector switch is set to MANUAL and the vehicle horn ring is activated. To change
the sound to air horn, merely move jumpers J8 and J9 from the PEAK position on the PC
board to the AIR position. See Figure 5.
Figure 5 Press-and-Hold Modication - Factory Conguration
290A4452-06
AIR
HORN
AIR
HORN
PEAK
J9
J8
PEAK
J8
J9
C49
C9
C48
R21
IC7 C29 R51
R31
IC10
++
+
D26
R23
R26
D21
C46
PEAK
IC6
AIR
HORN
PEAK
AIR
HORN
IC5
R15
R16 D25
+
R20
C7
R22
IC1
++
C20
C8
D27
IC3
R11

1414 Model PA300 Series Electronic Siren
Federal Signal www.fedsig.com
Installation
Figure 6 Press-and-Hold Modication - Air Horn Conguration
290A4452-07
AIR
HORN
AIR
HORN
PEAK
J9
J8
PEAK
J8
J9
C49
C9
C48
R21
IC7 C29 R51
R31
IC10
++
+
D26
R23
R26
D21
C46
PEAK
IC6
AIR
HORN
PEAK
AIR
HORN
IC5
R15
R16 D25
+
R20
C7
R22
IC1
++
C20
C8
D27
IC3
R11
Adjusting Relative PA Loudness
After the electronic siren is completely installed in the vehicle, set the Selector switch to
MANUAL. Press the microphone push-to-talk switch, speak in a normal voice, and adjust
the GAIN control for the desired sound level outside the vehicle. Turn on the vehicle’s
two-way radio and adjust the volume to a comfortable listening level inside the vehicle.
Then set the Selector switch to RADIO. Stand outside of the vehicle and note the radio
rebroadcast loudness. If the sound volume is too loud or too soft, using a small, flat
blade screwdriver, adjust R39 from the back of the siren to the desired sound level. See
Figure7.
Figure 7 Relative PA Loudness
R39
290A4452-08
After the adjustment is completed, the loudness of the radio rebroadcast and public
address may be varied with the front panel GAIN control.

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Testing the Installation
Testing the Installation
All eective sirens and horns produce loud sounds (120 dB) that may cause permanent
hearing loss. Always minimize your exposure to siren sound and wear hearing protection.
Do not sound the siren indoors or in enclosed areas where you and others will be exposed
to the sound.
After installation, test the electronic siren, including horn operation, to ensure that it is
operating properly.
After testing is complete, provide a copy of this manual to all operating personnel.
Operating the Unit
All controls used during normal operation of the Model PA300 are located on the front
panel. See Figure 8.
Figure 8 Front View
290A4452-09
The wired-in noise cancelling microphone provides high quality voice reproduction in the
public address mode. The microphone push-to-talk switch will override all siren functions,
except radio rebroadcast, for instant PA use.
Gain Control
The GAIN control is used to turn the siren on and o. It is also used to control the volume
when the siren is used for public address or radio amplification. Clockwise rotation of the
knob increases voice volume in the public address or radio amplification mode. The GAIN
control does not control the volume of the siren signals.
The maximum clockwise setting of the control will be determined, in most cases, by the
point at which feedback or “squeal” occurs. This will depend upon the microphone gain,
open windows, speaker placement, proximity of reflecting surfaces (building or other
vehicles), etc. Adjust the GAIN control to a position just below the point at which feedback
occurs or as desired.
Selector Switch
The Selector switch is a five-position rotary switch used to select the mode of operation.
The following are positions on the Selector switch.

1616 Model PA300 Series Electronic Siren
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Operating the Unit
Radio
In this position, incoming radio messages are amplified by the siren and rebroadcast over
the outside speaker.
Manual
In this position it is possible to operate the siren by activating the HORN/SIREN switch.
The siren can also be activated by means of an auxiliary switch, such as the horn ring
button.
Wail
In this position the siren produces a continuous “wailing” sound, up and down in
frequency.
Yelp
In this position a continuous, rapid “warbled” tone is generated.
Hi-Lo (Models 690000 and 690001)
In this position a two-tone sound will be heard. This distinctive tone may be reserved for
any special indication or situation.
Priority (Models 690002 and 690004)
In this position a rapid YELP sound will be heard. This distinctive tone may be reserved for
any special indication or situation.
Horn/Siren Switch
The HORN/SIREN switch, located on the left side of the front panel, activates the
electronic air horn sound (up) or peak-and-hold sound (down) in any siren mode except
radio.
Tap II Functions
Tap II allows the driver to change the siren sound via the vehicle’s horn ring. This feature
is especially eective for clearing trac. The chart below demonstrates how the horn ring
can be used to change the siren sound.
Table 4 TAP II Functions
Selector
Switch
Position
First Horn
Ring Tap
Produces
Second Horn
Ring Tap
Produces
Wail Yelp Wail
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17
Installation and Maintenance Manual
Federal Signal www.fedsig.com
Getting Technical Support and Service
Press and Hold Functions
Additional alternate sounds can be activated in two other Selector switch positions by
pressing and holding the horn ring for as long as the alternate sound is desired. The chart
below shows these additional Press and Hold functions.
Table 5 Press and Hold Functions (Models 690000 and 690001)
Selector
Switch
Position
Press on
Horn Ring
Produces
Release of
Horn Ring
Produces
Hi-Lo Air Horn Hi-Lo
Manual Peak and Hold
or Air Horn
Coast Down and
Silence or Silence
Table 6 Press and Hold Functions (Models 690002 and 690004)
Selector
Switch
Position
Press on
Horn Ring
Produces
Release of
Horn Ring
Produces
Priority Air Horn Priority
Manual Peak and Hold
or Air Horn
Coast Down and
Silence or Silence
Getting Technical Support and Service
For technical support and service, please contact:
Service Department
Federal Signal Corporation
Phone: [phone]
Email: [email protected]
www.fedsig.com
Getting Repair Service
The Federal Signal factory provides technical assistance with any problems that cannot
be handled locally.
Any units returned to Federal Signal for service, inspection, or repair must be
accompanied by a Return Material Authorization (RMA). Obtain a RMA from a local
Distributor or Manufacturer’s Representative.
Provide a brief explanation of the service requested, or the nature of the malfunction.
Address all communications and shipments to the following:
Federal Signal Corporation
Service Department
2645 Federal Signal Drive
University Park, IL 60484-3167

1818 Model PA300 Series Electronic Siren
Federal Signal www.fedsig.com
Getting Technical Support and Service
Ordering Replacement Parts
To order replacement parts, call Customer Support at 1-800-264-3578, 7 a.m. to 5 p.m.,
Monday through Friday (CT) or contact your nearest distributor.
Table 7 Replacement parts
Description Part No.
Transistor, Output, BUT 70 W 125467
Transformer, Output 1461357
Fuse, 20 A, 3 AG, 32 V 148A127
Switch, Rotary 122376
Switch, Toggle 122377
Header, 10-Pole Molex 140454-05
Microphone (690000 and 690002) 258B577-03
Optional Microphone (690001 and 690004) MNCT-SC
Microphone Clip 85361082
Microphone Strain Relief 231A148
Knob, Gain Control 141A102
Knob, Selector 141A111
Circuit Board Assy. (690000) 2005183-1234
Circuit Board Assy. (690001) 2005183-123
Circuit Board Assy. (690002) 2005183-124
Circuit Board Assy. (690004) 2005183-134
Switch, Gain Control 106128
Harness, Wiring 1461360
Kit, Installation Accessory 8537561
Bracket, Mounting 8536B022
Faceplate, Logo PA300 81461864
Faceplate, PA300 (690000 and 690001) 81461865
Faceplate, PA300 (690002 and 690004) 81461865-01
Adapter Cable 761300

Figure 9 Internal View
290a4452-10
Microphone
Toggle Switch Selector Knob
Gain Control
Knob
Gain Control
Faceplate Logo
Faceplate Rotary Switch
Output
Transistor
Output Transistor
Output
Transformer

2645 Federal Signal Drive
University Park, Illinois 60484-3167
www.fedsig.com
Customer Support
Police/Fire-EMS: 800-264-3578 • [phone]
Work Truck: 800-824-0254 • [phone]
Technical Support 800-433-9132 • [phone]