Stone Mountain Ltd Introduction Established in January 2002

Stone Mountain, Ltd. Introduction § Established in January 2002. § Business model is to provide high quality, extremely rugged and reliable speaker microphones to the land mobile radio (LMR) market, focusing on Public Safety, Emergency Response, Military and Industrial applications. § We offer two speaker microphone platforms (Sword and Juno), a PTT platform (Utah) and several audio accessories (Omaha Series). All major OEM radio platforms are supported. § See www. stonemountainltd. com for more details.

Juno ™ Speaker Product Lines Microphone • Juno speaker microphone series. • Sword speaker microphone series. • Utah chest PTT series. • Omaha audio accessory series.

Sword Speaker Microphone • Designed for Law Enforcement, Military, Fire Fighting, Utility, and Industrial users. • 50 mm. Mylar speaker. • Supports a full line of 2. 5 mm. , 3. 5 mm. and six pin Hirose connector accessories. • Immersion rated to two meters for 60 minutes. • 24 month warranty.

Sword Pro. Band Antenna Series • Antenna incorporates Printed Circuit Flex Film Technology (PCFFT). • Antenna is included with speaker mic. • Micro miniature custom coax cable and connectors. • Full six foot extended coil cable. • Supports a full line of 2. 5 mm. , 3. 5 mm. and six pin Hirose connector accessories. • Supports 700 & 800 MHz. frequency. • Immersion rated to two meters for 60 minutes. • 24 month warranty.

Sword Tru. Band Antenna Series • Micro miniature custom coax cable and connectors. • Full six foot extended coil cable. • Supports a full line of 2. 5 mm. , 3. 5 mm. and six pin Hirose connector accessories. • Supports VHF, UHF, 700, 800, and 900 MHz. frequencies. • Antenna is purchased separately from speaker Mic. • Immersion rated to two meters for 60 minutes. • 24 month warranty.

Sword Tru. Band Antenna Series VHF VHF VHF 136 MHz - 144 MHz 145 MHz - 148 MHz 150 MHz - 162 MHz 155 MHz - 164 MHz - 174 MHz UHF 400 MHz - 449 MHz UHF 450 MHz - 469 MHz UHF 470 MHz - 512 MHz 800 MHz - 866 MHz 900 902 MHz - 960 MHz

Speaker Microphone Design Ideology • Z-Axis design for manufacturability and ease of repair. • Modular design to facilitate upgrading. • Interchangeable components to minimize inventory. • No soldered connections - All gold plated custom connectors and pressure contacts for reliability in harsh environments. • Integrally molded buttons for environmental sealing. • Two shot revolving platen overmolding provides comfortable rubber user interface.

Engineered Materials • Substrate is a custom engineered PC/ABS blend thermoplastic polymer. • Overmold is a thermoplastic elastomer alloy designed especially for bonding to the substrate PC/ABS polymer. • Molded concurrently in a two shot revolving platen overmolding process for optimum quality and part integrity. • Allows emergency button, push to talk (PTT) and volume control interface buttons to be integrally molded to the case, resulting in unprecedented sealing capability.

Form Factor • • Intuitive button locations. Ergonomic form factor. Comfortable rubber interface. Roman arch design allows extreme compression loading in any direction. • Attractive design. • Form follows Function.

Receive Audio System • Conventional forward acoustic speaker porting. • Additional dual radial acoustic speaker porting - Allows speaker mic to be worn in any orientation without degradation to acoustic performance. • Speaker cavity self draining feature. • No speaker cloth to trap dust/debris. Clean speaker cavity by flushing with tap water. • Superb acoustic performance and clarity throughout the entire life of the product.

Microphone Porting - Sword • All. Clear microphone porting system. • Protected 3. 5 mm. microphone opening. • Sculpted, polished intake geometry removes surface tension – Minimizes trapped water and debris. • Enhances mic sensitivity. • Self clearing capability. • Integrally protective hood directs falling water away from mic opening. • Maintains clear transmit audio even when covered with water.

Microphone Porting - Juno • All. Clear microphone porting system. • Oversize 3. 5 mm. microphone opening. • Sculpted, polished intake geometry removes surface tension – Minimizes trapped water and debris. • Enhances mic sensitivity. • Self clearing capability. • Integrally molded ribs in protective hood directs falling water away from mic opening. • Maintains clear transmit audio even when covered with water.

Integrally Molded Buttons • PTT – Large contact area. – Positive tactile response. – Intuitive location. • Volume Control – Discrete high and low buttons. – Programmable on certain radio models. • Emergency – Recessed design coupled with custom 200 gm. and 320 gm. contact force switches to eliminate false emergencies.

Belt Clip w/o screws SMX 25155 Belt Clip w/ screws – SMX 26755 • Large, rugged design. • PC/ABS custom engineered polymer. • High quality stainless steel components for reliability and corrosion resistance. • 360° rotation with positive detents at every 45°. • High closure force. • 180 degree lip for positive retention. • Accommodates any tactical gear, turn out coat, etc. • Easy to replace and repair.

Custom O-Ring Seal Screws Seal Screw Assembly, K 22 x. K 6 – SMX 19086 Seal Screw Assembly, K 22 x. K 14 – SMX 19024 • Custom designed and tooled. • Discrete low durometer silicon o-ring seal. • Recessed screw head for mating oring means no compression set Maintains a reliable seal over the life of the product. • Nickel plated to protect against corrosion in harsh environments. • Standard Torx drive throughout for positive, repeatable engagement torque during installation. • Reusable.

Speaker & Installation • • High quality Mylar speaker. Heavy duty magnet and construction. Miniature connector interface. Attached to front cover with custom designed and tooled pressure sensitive adhesive (PSA) component. • Hermetically sealed via robotically dispensed engineering adhesive compound.

Dynamic Transfer Bars Sword PTT Transfer Bar – SMX 19056 Emergency Transfer Bar – SMX 19007 • Overmolded dynamic transfer bars for emergency and PTT buttons. • Ensures positive actuation over entire button user interface surface. • Maintains tactile response throughout product life. • Custom “ball and socket” mating interface - Ease of assembly and repair.

Custom Snap Dome Switches 200 gm – SMX 19506 Used for Emergency Button 320 gm – SMX 19013 Used for Volume Control Front Cover Assembly – SMX 19931 • Custom designed and tooled. • 100% gold plated. • Side actuating snap domes in 200 gm. and 320 gm. contact force. • Pogo pin printed circuited board (PCB) interface-No soldering/no wires. • Allows Z-axis assembly. • Facilitates repair. • Custom “ball and socket” mating interface - Ease of assembly and repair. • Extensively tested in house and verified to one million actuations minimum.

Transmit Audio System Microphone Assembly – SMX 19688 • Four component custom designed and tooled proprietary microphone Sword Sound Port – SMX 19058 acoustic gasket assembly. • Custom designed and tooled silicon rubber acoustic boot. Microphone • High sensitivity omni directional Boot – SMX 19687 microphone. • Miniature connector interface for ease Microphone of assembly and repair - No soldering. Gasket – SMX 19770 • Custom designed and tooled silicon rubber sound port. • Superb transmit audio and clarity.

Rear Cover Assembly • PC/ABS custom engineered polymer. • Compression molded, custom designed and tooled low durometer silicon rubber environmental seal. • Low compression set speaker support component. • Labyrinth design venting system with waterproof gaskets. • 100% of all seal interface surfaces are highly polished for reliable environmental sealing. • Discrete sub assembly supports Z-axis assembly - Ease of repair. Rear Cover Assembly – SMX 19061

Main PCB Assembly • Self aligning via integrally molded mating geometry in the front cover. • 100% surface mount technology (SMT) components. • 100% gold plated for optimum conductivity, performance and reliability in harsh environments. • No hand soldering - Easy to repair. • All Main PCB’s will accommodate every SML cable/accessory option with existing SMT connectors - Easy to upgrade. • Clean, efficient design.

Cable Attachment & Accessories • Supports system accessory option upgrade. • Aircraft aluminum grade cable clamps, includes holes for easy release and repair. • Integrally overmolded waterproof accessory interfaces in the cable. • Options include 2. 5 mm, 3. 5 mm. and 6 pin Hirose. • Miniature connectors throughout - No soldering.

Cable – Strain Relief, Sealing & Performance • Custom designed, machined high strength brass ferrules, crimped to the cable. • 50 K cycle endurance rating. • Overmolded with custom engineered thermoplastic polyurethane (TPU). • Designed using finite element analysis (FEA) for optimized strength to weight ratio. • Integrally molded o-ring seal interfaces with high quality silicon rubber o-ring seals. • Integrally molded locking geometry prevents rotation of cable and subsequent damage to the electrical connections. • 200 Newton minimum rated pull strength.

Radio Connector (RC) Design • All RC’s are either custom tooled by SML or sourced from quality OEM RC suppliers. • Most SML tooled RC’s are fastened together using seal screws - No snap fits. • All SML tooled RC’s include miniature connectors - No soldered wires. • Most SML tooled RC’s include multiple molded silicon components for redundant environmental sealing. • Custom three layer PSA includes silicon and acrylic adhesive components. • All seal surfaces 100% polished.

Radio Connector (RC) PCB • All RC PCB’s are either custom tooled by SML or sourced from quality OEM RC suppliers. • All SML tooled PCB’s are 100% surface mount technology (SMT). • All SML tooled PCB’s are 100% gold plated for optimum reliability in harsh environments. • All SML tooled PCB’s are fully connectorized for ease of assembly and repair. • High strength, gold plated pogo pins for long, reliable life.

Pro. Band Antenna Technology • Printed Circuit Flex Film Technology (PCFFT) allows miniaturization of the physical antenna envelope. • High RF performance. • Bendable and durable. • Will not corrode or rust. • Waterproof. • Low profile. • Light weight. • Supports 800 MHz. , with 700 MHz and 900 MHz. pending.

Pro. Band Assembly • Custom engineered thermoplastic elastomer alloy overmolded antenna assembly. • High quality, low durometer discrete silicon o-ring sealing component. • Antenna included with speaker microphone - No need to dismantle radio antenna. • No soldered connections for ease of repair and high reliability. • Micro miniature, low loss coax connectors and cable allow full six foot extended coil cord. Plated Rear Cover – SMX 19875

Tru. Band Assembly • Replaceable injection molded 1/4 wave helical antenna. • High quality, low durometer discrete silicon o-ring sealing component. • No soldered connections for ease of repair and high reliability. • Replaceable gold plated surface mount RF PCB. • Micro miniature, low loss coax connectors and cable allow full six foot extended coil cord. • VHF, UHF, 800 MHz. and 900 MHz. antennas. Plated Tru. Band Rear Cover Assembly – SMX 25072

RF Plating • Cutting edge vacuum metallization plating process using copper and nickel materials. • High conductivity. • Excellent shielding. • Will not rust, corrode or degrade in corrosive environments. • Highest quality. Sword Plated Front Cover – SMX 19933

Cable Assemblies • Six foot fully extended cable assembly. • 100% fully connectorized signal and coax interface to speaker mic head and all SML tooled radio connectors No soldered connections. • Integrally overmolded, environmentally sealed accessory interfaces in the cable. • Options include plain, 2. 5 mm. , 3. 5 mm. and six pin Hirose. • Rugged 5. 5 mm. diameter OD cable – Industry’s largest. • Absolute highest quality, most rugged cable assembly available.

Available Options • Pro. Gain - User adjustable microphone gain system. • AGC - Automatic Gain Control feature. • Stainless steel knurled thumb screw. • Interface to various OEM headsets, SCBA’s, etc. • Standard or half length cables (most models).

Pro. Gain. TM System • Allows the user to custom attenuate the speaker mic Tx audio microphone gain. • Easy to access, sealed adjustable gain potentiometer. • Maintains system environmental seal/immersion rating. • Adjust microphone gain from maximum to minimum transmit power – Allowing close quarter communications by eliminating feedback. • Simply remove the belt clip via four T 6 Torx fasteners - Adjust mic gain with a small screw driver. • Available on both Sword and Juno.

AGC - Automatic Gain Control • • Unique to SML Mounts to main speaker mic PCB. Custom tunable via software inputs. Automatically adjusts the microphone sensitivity and provides a consistent level of receive audio • Useful If the user is whispering, shouting, or if background noise such as wind or industrial noise is present. • Increases performance and addresses interface problems typical with accessories such as headsets and SCBA communication systems. • Available on Sword.

Sword Technical Specifications · Microphone Element Omni directional · Microphone Sensitivity -40 d. BV (0 d. B=1 V/Pa) · Speaker Diameter 2. 0” (50 mm) · Speaker Output Power ½ to 1 W (dependent on radio brand/model) · Speaker Output Level (SPL)93 to 100 d. B SPL (dependent on radio brand/model) · Operating Voltage Range 5. 0 to 9. 0 VDC (microphone) · Female Accessory Jacks 3. 5 mm & 2. 5 mm for remote Rx audio or 6 pin Hirose HR 10 A 7 R 6 S “Locking Quick Disconnect” for remote Tx/Microphone, Rx/Earphone and PTT functions · Frequency Response 300 – 3000 Hz · Distortion 4% (speaker) · Dimensions 3⅜” L x 2⅝” W x 1” H (84. 8 mm x 66. 0 mm x 26. 8 mm) · Weight 7. 5 oz (212 gm) · Operating Temperature -30°C to +60°C · Storage Temperature -57°C to +80°C · Volume Control Up (+) and Down (-) buttons for adjustable volume control · Rotating Clothing Clip 360°with positive detents at every 45° · Cable Assembly Flex Life 50, 000 cycles

· Cable Assembly Pull Strength 1 45 lbs. (200 N) tensile strength, in line with speaker mic · Cable Assembly Pull Strength 2 45 lbs. (200 N) tensile strength, perpendicular to speaker mic · Immersion Rating 3 One (1) meters for thirty (30) minutes · Mil-Std 810 C, D, E & F Specs Designed to meet or exceed · Low Pressure 500. 4/I & II Yes · High Temp 501. 4/I & II Yes · Low Temp 502. 4/I & II Yes · Blowing Rain 506. 4/I 3 Yes · Leakage 512. 4/I 3 Yes · Humidity 507. 4/II Yes · Salt Fog 509. 4/I Yes · Blowing Dust 510. 4/I Yes · Vibration 514. 4/I/CAT 1 & 104 Yes · Shock 516. 5/I & IV Yes · Temp Shock 503. 4/I Yes · Solar Radiation 505. 4/II Yes Footnotes: 1 Straight pull strength, at speaker microphone end 2 Right angle pull strength, at speaker microphone end 3 Speaker mic only, excludes radio device connector 4 Curve W