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

  • The latest version of Pro Tools 2022.9 transforms Dolby Atmos Production Suite workflows, remote collaboration and music creation through features such as ARA2 (Audio Random Access) integration with Celemony’s Melodyne, and Aux I/O for flexible audio routing. Pro Tools 2022.9 also brings a new offering to the previous Artist, Studio, and Flex tiers called Pro […]
  • Here’s a good combination – one of the most prolific, technical and hands-on of our producer engineers [interview Resolution V19.1] has teamed up with innovative developer Leapwing to build a ‘Signature’ plug-in. “After going through the process successfully with the late Al Schmitt, we found ourselves a new challenge, as Joe uses much more processing […]
  • McDSP has announced the release of universal binary versions of the entire APB plug-in line up. [Resolution V18.4 reviewed the innovative McDSP APB hardware host] McDSP APB plug-ins can now run natively on both Intel and Apple silicon computers. This release also takes advantage of recent mac OS improvements in graphics rendering for both Intel […]
  • Built on core technologies from Synchro Arts flagship Revoice Pro application [review Resolution V17.7], RePitch enables adjustment of the pitch, timing and volume of any monophonic vocal (or instrument).  When you’re simply looking to retune a wayward vocal, just load one of the task-orientated macros to instantly snap your singer to the key and scale of the […]
  • Spherix is a suite of two plugins – a compressor and a brickwall limiter – designed from the ground up for fast, efficient work on the beds (fixed channels) of immersive 7.1.4/7.1.2 mixing environments such as Dolby Atmos. The $199 Spherix suite offers dynamics that are specifically designed for immersive mixing.  Spherix’s quick-access controls, available […]
  • Designed to adapt to changing production needs, Calrec’s Argo is a new approach to audio mixing, with a flexible control philosophy that breaks the traditional geographic ties between processing and control. Argo is fully modular with interchangeable hardware panels and uses Calrec’s time-served Assist UI at its core. This means that whether you are working on […]
  • iZotope has released the latest version of their audio restoration software RX 10. Notable additions to a generally-improved suite are the new Repair Assistant module and improvements to both the Spectral Recovery and Dynamic De-hum modules. The Text Navigation and Multi-Speaker Detection features are a potentially ground-breaking development for audio pros working in specialist fields, but are […]
  • Genelec has added Stockholm and Helsinki to its global network of Experience Centres. By visiting these new facilities, customers will receive expert personal advice on Genelec loudspeaker solutions, and enjoy an exceptionally high quality critical listening environment, from stereo to immersive. The new Nordic locations join existing Genelec Experience Centres in Europe, America and Asia […]
Translate »