Advertisement
IRIDIUM ACTIVE ANTENNA - AA511
OVERVIEW
Iridium satphones were originally designed to operate with a passive antenna, either an element
attached directly to the handset, or a remote aerial connected with a short length of coaxial cable.
Unfortunately, a signal loss of more than 3dB in a remote antenna's connecting cable degrades perfor-
mance due to attenuation of both the received and transmitted signals. A 3dB loss corresponds to
approximately 20m of LMR600 or 6m of LMR240 coaxial cable, lengths that clearly restrict the mount-
ing options for the antenna using standard down-leads.
A
with type 'N' connectors, or a down-lead with an equivalent loss. Designed for harsh environments, the
AA511 consists of two RHCP dipole antennae housed within a single 4mm thick GRP radome mounted
on a common base. One antenna is for signal transmission and one for reception. A linear power ampli-
50 MHz centred on the Iridium band to attenuate any out of band interference that may arise.
pg 1
rev 2.1
Advertisement
Table of Contents
Related Manuals for Applied Satellite Engineering ASE AA511
Summary of Contents for Applied Satellite Engineering ASE AA511
- Page 1 IRIDIUM ACTIVE ANTENNA - AA511 OVERVIEW Iridium satphones were originally designed to operate with a passive antenna, either an element attached directly to the handset, or a remote aerial connected with a short length of coaxial cable. Unfortunately, a signal loss of more than 3dB in a remote antenna’s connecting cable degrades perfor- mance due to attenuation of both the received and transmitted signals.
-
Page 2: Specifications
IRIDIUM ACTIVE ANTENNA - AA511 AVAILABLE CONFIGURATIONS ASE AA511 antenna only ASE AA511-40 40 meters, RG213 ASE AA511-70 70 meters, LMR400 NOTE: Use of the incorrect cable at the specified length or shortening the supplied cable can damage the antenna and invalidate the warranty. - Page 3 IRIDIUM ACTIVE ANTENNA - AA511 SYSTEM CONNECTIONS AA511 ACTIVE ANTENNA COAXIAL DOWN-LEAD N-type male (both ends) 1M INTERCONNECT AA511 INTERFACE BOX TNC male (both ends) DOCKING STATION 24VDC to AC FIXED STATION TERMINAL GROUND POWER ADAPTER (1) Mount AA511 active antenna with clear view of sky using bracket supplied. (2) Attach top end of the coaxial down-lead to N type connector on underside of antenna.
- Page 4 IRIDIUM ACTIVE ANTENNA - AA511 MOUNTING GUIDE The AA511 should be mounted with an unobstructed view of the sky. An aluminium bracket with V-bolts is provided to attach the antenna to vertical spars up to 60mm in diameter. The bracket is shipped inverted on the AA511 antenna.
- Page 5 IRIDIUM ACTIVE ANTENNA - AA511 MOUNTING GUIDE The AA511 antenna requires view 360 deg. Line-of-Sight to Horizon The bottom of the antenna must be clearance angle at least 0.15m (.5ft) above building Mounting distance must be at least 1m (3.2ft) surrounding structure AVAILABLE ACTIVE ANTENNAS ASE-AA511...
- Page 6 IRIDIUM ACTIVE ANTENNA - AA511 MOUNTING FOOTPRINT 4 x m4 16mm 3.53 .7pitch (provided) 3.15 4.00 .35 thru 2.350 2 x 2”(od) 3/8 u-bolt (provided) 2.450 AA511 ANTENNA 2.74 4.32 5.52 4.93 2.36 AA511 POWER AMPLIFIER pg 6 rev 2.1...
Need help?
Do you have a question about the ASE AA511 and is the answer not in the manual?
Questions and answers