SM701 SERIES

Compact Mobile
Antenna

Broad Multi-band Coverage.
SM701 Contact Us
ITS150A

Next Generation
Monitoring Arrives
Q3–Q4 2026

Conventional, Smart or Scalable. Monitoring Built Around Your Needs!
Channelized RF System Monitoring

IntelliSENSE™
PMS
System

24/7 Smart Power Monitoring Sytem!
Check out the IntelliSENSE™
SM714

Transit Antenna
4 in 1, 5G/WiFi
Tri-Band GNSS

Built-in tri-band GNSS module for speedy and precision positioning
SM714 Spec Sheet
TJ231 VHF Cavity Combiner

TJ231 Product
Enhancement

Triple-stage isolator with 150 kHz spacing and 19" rack-mount for easy integration.
Learn More

SINCLAIR TECHNOLOGIES OVERVIEW

Sinclair Technologies specializes in innovative wireless communication solutions trusted across the industry. Our portfolio includes over 3,000 products—from advanced antennas and filters to a wide range of accessories—covering key frequency bands such as 800 MHz, UHF, VHF, TETRA, and 5G. We also offer customized solutions, including Low PIM antennas and PIM hardened filters, to ensure high reliability performance in demanding environments. Discover how Sinclair can elevate your wireless systems—contact us today to learn more.

NEW PRODUCT ALERTS

ST221 Wideband Series

ST221 Wideband Series is a rugged, low-profile VHF antenna designed for transportation and mobile communications. Built on Sinclair’s proven cast aluminum platform, it delivers reliable omnidirectional coverage, broad VHF frequency support, and up to 300 W power handling. Its compact design, durable construction, and DC-grounded architecture make it an ideal choice for rail, transit, public safety, and fleet applications operating in demanding environments.

  • Low-profile 4 in (102 mm) design minimizes impact risk on roof-mounted vehicles.
  • Wideband, dual-resonance performance supports broad VHF coverage and specialized channel plans.
  • Rugged cast aluminum construction ensures long-term durability in harsh environments.
  • Omnidirectional, vertically polarized pattern provides reliable mobile VHF coverage.
  • DC-grounded, 300 W power handling for demanding VHF applications.
  • Ideal for rail, transit, public safety, and commercial fleet vehicles.

SM701 Compact Mobile Antenna

The SM701 Series is a compact, low-profile antenna platform that combines cellular, GPS/GNSS, and Wi-Fi connectivity into a single rugged solution. Designed for fleet, transit, utility, industrial, and in-building applications, it simplifies installation, reduces rooftop clutter, and delivers reliable performance in space-constrained environments. With support for wideband cellular coverage, durable IP67-rated construction, and flexible mounting on metallic or non-metallic surfaces, the SM701 Series is built for dependable connectivity in harsh conditions.

  • Flexible Configurations: available in cellular-only, cellular + GPS, and GNSS + dual-band Wi-Fi configurations.
  • Broad Multi-band Coverage: supports cellular bands across 694–960, 1710–2700, 3400–4200, 4400–5000, and 5150–6000 MHz, depending on model.
  • Low-profile, Rugged Design: UV-stabilized housing designed for demanding mobile and transport applications.
  • Simple, Sealed Mounting: installs through a single 3/4 in mounting hole and provides IP67 protection after proper installation.

Q3 FEATURED PRODUCTS

SD210R-SF2 Series

The SD210R-SF2 Series is a rugged family of directional VHF antennas covering 138–174 MHz. Available in 60°, 90°, and 120° beamwidth options, it delivers 4.5–7 dBd gain, broadband performance, and low PIM for reliable operation in simulcast, sectorized, and other demanding outdoor RF applications. Designed for side-mount installations only.

  • 60°, 90°, and 120° horizontal beamwidth options for VHF simulcast and sector coverage.
  • Single-bay dipole reflector antennas with 4.5-7 dBd of gain.
  • Broadband 138–174 MHz operation for full-band VHF applications.
  • Low PIM design, rated ≤ -150 dBc.
  • Rugged side-mount construction for outdoor installations.

ST321 Series

The Sinclair ST321 Series UHF/TETRA transit antennas are compact, low-profile omnidirectional antennas designed as rugged alternatives to conventional quarter wave whips. Built with a high-strength cast aluminum body for long service life, the ST321 Series is well suited for trains, public-transit vehicles, construction equipment, police vehicles, and other fixed or mobile applications where low clearance and durability are important. Each antenna is supplied with mounting hardware to support a weather-resistant installation. A minimum 30" x 30" ground plane is required.

  • Compact, low-profile design ideal for low-clearance mobile and transit applications.
  • Rugged cast aluminum construction delivers exceptional durability and long service life.
  • Reliable omnidirectional UHF/TETRA performance for trains, public transit, public safety, and fleet vehicles.

SP42-HL Series

The Radiant™ SP42F2X-HL is Sinclair's next-generation panel antenna, delivering exceptional wideband performance, flexible beam configurations, and industry-leading -150 dBc PIM for low-noise 4G and trunking systems. Built with a rugged fiberglass radome and fully DC-grounded components for superior lightning protection, it is engineered for reliable operation in public safety, telecommunications, and utility applications. An integrated hot-swappable Remote Control Unit (RCU) enables Remote Electrical Tilt (RET), while its compact design provides excellent gain, beam control, isolation, and sidelobe suppression across the entire operating band.

  • High-gain dual-port cross-polarized panel antenna with stable pattern.
  • Patent-pending design for outstanding electrical performance and compact form factor.
  • Integrated internal remote electrical tilt (RET).
  • Rugged design with fiberglass radome for harsh environment.