Exhibit 2

1771-EX-ST-2018 Text Documents

Alliant Techsystems Operations LLC

2018-10-17ELS_218237

EXHIBIT 2

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                                    Ω                                Ω       

Haigh-Farr’s family of rugged Blade antennas are available in frequencies ranging from UHF to upper C-band, and may be provided in either straight or rounded blade configurations. These antennas have demonstrated proven reliability in over 30 years of high-performance airborne applications. Blade antennas are also used extensively in ground-based vehicles such as race cars, trucks, tanks, and motorcycles, to name a few. These Blade antennas exhibit quasi-uniform null- free hemispherical patterns. FEATURES : APPLICATIONS : • Hemispherical Coverage • Data Links, Telemetry, Transponder (see patterns on next page) • Aircraft • Frequencies from UHF to C‐Band • UAVs • Small, Compact Footprint • Helicopters • Aerodynamic Design • Tactical Missiles • Common Footprint for All Models • Ships • Built to Withstand Extreme Shock & Vibration Environments • Ground‐Based Vehicles • Single or Array Implementations with Matching Power Dividers and Cables DESIGN CAPABILITY Haigh-Farr has a more than 40 year history of designing and producing exceptionally rugged, high- performance antennas. If you don’t find an antenna meeting your requirements in our standard list of products, Haigh-Farr has the experience and modeling capability to customize a solution. Adaptations of existing designs can be done with very short lead times. Contact Haigh-Farr for a review of your antenna requirements. Haigh-Farr, Inc. 43 Harvey Road, Bedford NH 03110 Tel: 603-644-6170 Fax: 603-644-6190 General Blade Rev B 05/10 Approved for release DF 5/10 E-mail: sales@haigh-farr.com Web Site: www.haigh-farr.com

MECHANICAL DIMENSIONS HAIGH-FARR STRAIGHT BLADE ROUNDED BLADE Haigh-Farr, Inc. 43 Harvey Road, Bedford NH 03110 Tel: 603-644-6170 Fax: 603-644-6190 General Blade Rev B 05/10 Approved for release DF 5/10 E-mail: sales@haigh-farr.com Web Site: www.haigh-farr.com

HAIGH-FARR BLADE ANTENNAS Round Blade Straight Blade Frequency Range VSWR 5KW¹ PEAK² Height Weight (SMA) P/N P/N GHz MAX/TYPICAL ALTITUDE POWER Inches [mm] OZ [grams] 6107 6007 1.060 ± .030 2.0:1/1.50:1 116 160 W 2.30 [58.4] 1.0 [28.3] 6108 6008 0.9165 ± .025 2.0:1/1.50:1 116 160 W 2.30 [58.4] 1.0 [28.3] 6109 6009 1.35 – 1.54 2.0:1/1.50:1 116 160 W 1.75 [44.3] 0.9 [26] 6110 6010 1.43 – 1.54 1.5:1/1.25:1 116 160 W 1.54 [39.1] 0.8 [23] 6110-2 6010-2 1.425 – 1.525 1.5:1/1.25:1 116 160 W 1.54 [39.1] 0.8 [23] 6110-3 6010-3 1.45 – 1.65 2.0:1/1.50:1 116 160 W 1.54 [39.1] 0.8 [23] 6110-4 6010-4 1.50 – 1.80 2.0:1/1.50:1 116 160 W 1.54 [39.1] 0.8 [23] 6115 6015 1.60 – 1.70 1.5:1/1.25:1 116 160 W 1.54 [39.1] 0.8 [23] 6120 6020 1.71 – 1.85 1.5:1/1.25:1 114 240 W 1.45 [36.8] 0.8 [23] 6125 6025 2.00 – 2.10 1.5:1/1.25:1 110 350 W 1.19 [30.2] 0.7 [20] 6125-1 6025-1 2.00 – 2.30 2.0:1/1.50:1 110 350 W 1.19 [30.2] 0.7 [20] 6130 6030 2.20 – 2.30 1.5:1/1.25:1 110 350 W 1.19 [30.2] 0.7 [20] 6130-1 6030-1 2.30 – 2.40 1.5:1/1.25:1 110 350 W 1.19 [30.2] 0.7 [20] 6130-2 6030-2 2.40 – 2.50 1.5:1/1.25:1 110 350 W 1.19 [30.2] 0.7 [20] 6130-3 6030-3 2.20 – 2.40 1.5:1/1.25:1 110 350 W 1.19 [30.2] 0.7 [20] 6130-4 6030-4 2.30 – 2.50 1.5:1/1.25:1 110 350 W 1.19 [30.2] 0.7 [20] 6130-6 6030-6 2.20 – 2.50 1.75:1/1.50:1 110 350 W 1.19 [30.2] 0.7 [20] 6135-1 6035-1 3.10 – 3.30 1.5:1/1.25:1 106 350 W 1.19 [30.2] 0.7 [20] 6135-2 6035-2 3.45 – 3.55 1.5:1/1.25:1 106 350 W 1.19 [30.2] 0.7 [20] 6135-3 6035-3 3.65 – 3.85 1.5:1/1.25:1 106 350 W 1.19 [30.2] 0.7 [20] 6140 6040 4.50 – 5.00 1.5:1/1.25:1 104 1.5 kW 0.90 [22.9] 0.6 [17] 6150 6050 5.40 – 5.90 1.5:1/1.25:1 102 2.2 kW 0.75 [19.1] 0.6 [17] 6150-1 6050-1 5.25 to 5.85 1.5:1/1.25:1 102 2.2 kW 0.75 [19.1] 0.6 [17] 6150-2 6050-2 6.40 – 6.60 1.5:1/1.25:1 102 2.2 kW 0.75 [19.1] 0.6 [17] • Thermal environments: ‐50°C to 150°C; 300°C Transient • Polarization: Linear, predominately vertical • Connector: SMA (50 Ω) Standard; TNC (50 Ω) Optional • Required Mounting Screws: 82⁰ Flathead #4 Standard; 100⁰ Flathead #4 or M3 optional • UHF models are available in different configurations • Mechanical outline drawings are available upon request ¹ The 5kW altitude (k ft) is the approximate altitude at which the antenna will experience external corona with 5kW peak power. ² Peak power indicates the maximum power that may be radiated without experiencing external corona at any altitude. These antennas routinely handle average power in the 25‐30W CW range. Sufficient airflow is required at the higher power levels. Haigh-Farr, Inc. 43 Harvey Road, Bedford NH 03110 Tel: 603-644-6170 Fax: 603-644-6190 General Blade Rev B 05/10 Approved for release DF 5/10 E-mail: sales@haigh-farr.com Web Site: www.haigh-farr.com

HAIGH-FARR BLADE ANTENNAS 0 dBi (5 dB/div) ELEVATION (PITCH) 2.250 GHz 0 dBi (5 dB/div) AZIMUTH (YAW) 2.250 GHz Note: The patterns shown above were measured with model 6130 on a cylindrical ground plane but are typical of the other Blades used. Fins and other protrusions on the vehicle will perturb the radiation pattern. The extent of any perturbations cannot be fully determined until radiation patterns are either calculated or measured on a model of the vehicle. Haigh‐Farr offers engineering services, which include the calculation of radiation patterns on a specific vehicle. Haigh-Farr, Inc. 43 Harvey Road, Bedford NH 03110 Tel: 603-644-6170 Fax: 603-644-6190 General Blade Rev B 05/10 Approved for release DF 5/10 E-mail: sales@haigh-farr.com Web Site: www.haigh-farr.com


Document Created: 2018-10-10 19:29:04
Document Modified: 2018-10-10 19:29:04
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