Close ☰
Menu ☰

Lectrosonics ALP690 UHF LPDA Antenna with built-in RF amplifier

Posted on: Tuesday 8th of January 2019

“Ya canna change the laws of physics, Captain …a bigger antenna is going to be better!” The newly-introduced ALP690, a high-performance UHF LPDA (log periodic dipole array) antenna with built-in RF amplifier, for use with wireless microphone receivers or base station transmitters in location and studio production. The new antenna design delivers +4 dBd of passive gain in a directional pattern to extend operating range, and an RF amplifier can be engaged to supply gain for overcoming signal loss in long coaxial cable runs.

The ALP690 antenna is powered by DC bias inserted on the coaxial cable connected to the 50 ohm BNC jack. This power can be supplied by a Venue Series receiver, an active multicoupler or an inline BIAS-T. When no bias is applied, the ALP690 automatically switches via relays to function as a passive antenna, so that the antenna can be used for receivers as well as IFB or IEM transmission applications.

RF amplifier gain, filter bandwidth and display brightness are adjusted with a membrane switch keypad and LED display on the control panel. RF gain is adjustable in 1 dB steps from -6 dB to +12 dB to match the RF loss depending on the type and length of coax cable in use. When used as an active antenna, the filter bandwidth is adjustable from 470 MHz at the lower end to either 608 or 700 MHz at the top end, to serve users’ needs in various markets and locations. Vertical orientation provides a wide horizontal coverage pattern.

The antenna is formed with copper traces on a .133 inch or 3.4 mm thick glass epoxy high-pressure thermoset plastic laminate material with a durable finish. The skeletal structure reduces wind loading in outdoor use.

Specifications for the ALP690 include: +7 dBi (isotropic), +4 dBd (over dipole) passive gain. The RF passband (passive) covers 450-850 MHz, while the active filtered passband covers 470 – 700 MHz or 470 – 608 MHz, selectable. The RF amplifier gain range is -6 to +12 dB in 1 dB steps. The third order intercept is +27 dBm at the input and +41 dBm at the output. The ALP690 weight is 13 oz. or 355 grams. Power Requirements: DC bias on center pin of coaxial cable; 8V to 16V DC; 1.5 W max.; polarity protected.

The ALP690 is available now at a MSRP of $925.00.

www.lectrosonics.com



Latest News & Blog articles

  • After a successful inaugural year (see Resolution V21.2), The Sound of the Year Awards is returning. A celebration of everyday sound in all its forms, the awards are presented by The Museum of Sound in partnership with The New BBC Radiophonic Workshop and others. Submissions are accepted and encouraged from around the world. Anyone over […]
  • Salsa Sound has upgraded its MIXaiR system. The AI-driven automix software for pitch/court-based sporting events, enables you to automatically create an immersive listening experience using standard mic setups without the need for tracking or manual operation. It does this by analysing the signals of multiple inputs and adjusting accordingly to its sports-specifc ‘trained’ AI. The […]
  • Exhibitors are signing up to take part in ISE 2022, due to take place in Barcelona at the start of February. NIGEL JOPSON takes a look. Registration for ISE 2022 is now open, offering the international audio, visual, and systems integration community a long-anticipated opportunity to reconnect in person at ISE’s new home at the […]
  • Merging will show several new introductions at the Amsterdam IBC2021 show, including developments relevant to broadcasters as IP infrastructures and remote production are ever more important. Its Pyramix digital audio workstation is often used for immersive content, and the 25th Anniversary edition of Pyramix included many of the hooks needed to simplify the workflow when […]
  • DPA Microphones has released a new accessory, the MS4099 mic stand mount, for its 4099 CORE instrument mic – and is also shipping brown versions of its 4466 CORE omnidirectional and 4488 CORE directional headset mics (Resolution V21.3). A solution for mounting the 4099 onto any mic stand, the MS4099 can be used for ⅜” […]
  • When AMS Neve got in touch with us to talk about the fact that its iconic 88R desk turns twenty this year, it occurred to us that the history of Resolution is somewhat intertwined with it. The very first issue of this magazine appeared in May of 2002, not all that long after the launch […]
  • Trinnov Audio has announced a complete hardware and software refresh of its D-MON speaker optimisation and management range. The upgrades are designed to deliver new features that can meet customer and studio requirements as the music industry incrementally adopts Dolby Atmos. Effective from December, the current D-MON 6 and 12 hardware units will be replaced […]
  • Fender Musical Instruments Corporation has today announced it has signed a definitive agreement of merger with PreSonus Audio Electronics, Inc. The Baton Rouge, Louisiana based brand is a manufacturer of recording and live-sound hardware. The musical instrument giant, best known for its guitars and amplifiers, is over 75 years old now – but sees potential […]
Translate »