Telephonics’ Small Lightweight Transponder (SLT) was specifically developed to meet military Identification Friend or Foe (IFF) requirements for Unmanned Aerial Systems (UAS), rotary- and fixed-wing aircraft and shipboard applications. Partnering with an established transponder manufacturer, Telephonics designed the SLT with adaptability in mind, making

it well-suited for retrofit and new platforms where Size, Weight and Power (SWaP) are of critical importance.

Small Lightweight Transponder (SLT)Mark XIIA Transponder Including Mode S and 4/5 Military Mode

Small & Lightweight with Advanced CapabilitiesIncorporating leading-edge technological advancements in electronic and mechanical packaging, the SLT will provide the smallest transponder size possible while maintaining militarized and certifi ed All-Mode capabilities.

Built for simple integration with a variety of mission control and control panel interfaces, the SLT easily adapts to meet new customer-specifi c requirements. The initial system version will be compatible with a serial (RS-485) control interface.

Broad Operating CapabilitiesTelephonics’ SLT is capable of operating in Modes 1, 2, 3/A, C, 4, 5 Level 1 and 2, Mode S Level ES, Automatic Dependent Surveillance-Broadcast (ADS-B) In/Out and is compatible with TCAS II. The transponder accommodates a standard KIV-77 Cryptographic computer appliqué and will provide a variety of command and control interfaces, including but not limited to:

MIL-STD-1553 RS-485 RS-232 Ethernet

System design enables a comprehensive Built-in-Test (BIT) capability through the front panel with LEDs that provide a BIT summary and Crypto battery status. A front panel BIT connector enables o� ine fault diagnosis, fault history retrieval and future capability growth.

Telephonics Corporation | 815 Broad Hollow Road | Farmingdale, New York 11735 | 631.755.7000

Specification Compliance & CertificationsThe SLT is designed to meet all applicable paragraphs of U.S. and international specifi cations that defi ne required transponder modes, performance, control and interfaces. SLT complies with:

STANAG 4193 ICAO Annex 10 Volumes III and IV for Modes 1, 2, 3/A, C and S Tempest standards Transponder requirements specifi ed in DoD AIMS 03-1000B, 03- 1000A (through Change Notice 3) and 04-900 for the cryptographic computer interface EMC requirements of MIL-STD-461E Other military standards

The design also complies with both EASA ETSO and FAA TSO specifi cations, including ETSO C112C, TSO C112D, ETSO C166B, TSO C166B, DO-178B Level B and DO-254 Level C.

39900 ©2019 Telephonics Corporation. All rights reserved. Although the information in this document has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. Telephonics reserves the right to make changes to product descriptions and specifications at any time without notice. Telephonics and the Telephonics logo are registered trademarks of Telephonics Corporation. Other names may be trademarks of their respective holders. All claims made herein speak as of the date of this material. The company does not undertake to update such statements.

For additional information, contact Telephonics at 631.755.7000 or visit www.telephonics.com.

Small Lightweight Transponder (SLT)

The SLT is designed to interface with a variety of mission control and control panel interfaces.

Weight Less than 4 lb.

Dimensions 5.2 w x 4.6 h x 5.0 d (in.)

Primary Power +28 VDC Nominal, IAW MIL-STD-704

Power Output 500 W (peak)

Photo courtesy of DVIDS