Spec Sheet

Copyright© 2017 Alien Technology, LLC. All rights reserved.
Alien, Alien Technology, the Alien Technology logo, Higgs, Hydra, Hydra logo, Squiggle, and the Squiggle logo are trademarks or registered trademarks of Alien Technology LLC in
the U.S. and other countries.
HANDLING PRECAUTIONS Observe standard handling practices to minimize ESD.
DISCLAIMER Application recommendations are guidelines only - actual results may vary and should be confi rmed. This is a general purpose product not designed or intended for any
specifi c application.
This product is covered by one or more of the following U.S. patents: 7716208, 7716160, 7688206, 7671720, 7659822, 7619531, 7615479, 7598867, 7580378, 7576656, 7562083, 7561221, 7559486, 7559131, 7554451, 7411503, 7385284, 7377445, 7364084, 7353598,
7342490, 7324061, 7321159, 7301458, 7295114, 7288432, 7265675, 7262686, 7215249, 7214569, 7199527, 7193504, 7173528, 7172910, 7172789, 7141176, 7113250, 7101502, 7080444, 7070851, 7068224, 7046328, 6998644, 6988667, 6985361, 6980184, 6970219,
6952157. Other patents pending.
This product is licensed under patents of Round Rock Research, LLC, for use solely with UHF RFID Readers (such as Alien reader products) that are licensed under an agreement with Round Rock Research, LLC.
Alien Technology
845 Embedded Way
San Jose, CA 95138
866-RFID NOW
www.alientechnology.com
Draft - Subject to Change
November 9, 2017
Device Mount Type Description Model Number
Hydra (US) Reader
Standard fl ush
mount / through
hole mount
Low-end Hydra reader/antenna combo with 2
PoE ports
ALR-F3720-USA-S-RDR-ONLY
Hydra+ (US) Reader
High-end Hydra reader/antenna combo with 3
PoE + 3 SMA + DC power in + digital IO
ALR-F3733di-USA-S-RDR-ONLY
Hydra (US) Reader
VESA 100mm
studded mount
Low-end Hydra reader/antenna combo with 2
PoE ports
ALR-F3720-USA-V-RDR-ONLY
Hydra+ (US) Reader
High-end Hydra reader/antenna combo with 3
PoE + 3 SMA + DC power in + digital IO
ALR-F3733di-USA-V-RDR-ONLY
F800-X and Hydra
Developers Kit (US)
Standard fl ush
mount / through
hole mount
ALR-F800-X w/Emissary, two Hydra reader/
antenna combo’s (ALR-F3720-USA-S+ALR-
F3733di-USA-S), ALR-A1001-F-S antenna, ALX-
431-6 antenna cable, Ethernet cables (4), 4-port
PoE switch, serial cable, micro-SD card and
black carry case.
ALR-F8XHYD-DEV-KIT
Antenna cable for Hydra and
ALR-A1001 or ALR-A0501 Antenna (or
other SMA antenna)
SMA (antenna) to Reverse Polarity SMA
(Hydra) Cable - 10ft/3m
ALX-431-3
SMA (antenna) to Reverse Polarity SMA
(Hydra) Cable - 20ft/6m
ALX-431-6
SMA (antenna) to Reverse Polarity SMA
(Hydra) Cable - 30ft/9m
ALX-431-9
Ordering Information
NOTE: Currently Hydra is only available in the US. Other regions will be introduced soon.
Feature Description
Frequency Range:
865 – 867 MHz / 902 – 928 MHz (different product SKU’s)
Polarization:
RH Circular
Far-fi eld Gain:
8.5 dBic
Far-fi eld 3dB beam width:
68° in both planes
Front to back ratio:
20dB
Axial Ratio:
1dB typical
Mounting:
Flush or VESA mount
Antenna Specifi cations
ALR-F3700 “Hydra” Series
Interconnected Reader/Antenna Combination