AD510 Passive Iridium antenna

For sales of all Iridium products please refer to Applied Satellite Technology Ltd. (

A rugged passive Iridium antenna designed to operate in harsh environments. The antenna’s radome is 4 mm thick GRP and the base is milled from aluminium and hard anodised to give a medium grey finish that is mechanically resilient and resistant to corrosion.

Figure 1. Passive Iridium antenna AD510-1 mounted on a mast with bracket and V-bolts. The downlead has been attached to the TNC on the centre of the antenna’s base.

The AD510 has a RHCP radiation pattern over the Iridium band and should be mounted to give an unobstructed view of the sky from horizon to horizon. The bracket (AD510-2) provided with each antenna can be attached to a mast or spar up to 60mm in diameter using the V-bolts provided. For packing purposes, the V-bolts may be bolted through the front face of the bracket and should be detached and reversed for mounting. Connection to the Iridium handset is made with an appropriate coaxial cable from a TNC (option AD510-1) or N connector (option AD510-4) on the underside of the antenna.

In order to meet the requirements of directive 1999/5/EC, the AD510-1 must only be used with Iridium systems that conform and operate within the Iridium frequency band harmonised throughout the Community. In particular, article 3.2 of the directive stipulates that effective use should be made of the system’s allotted spectrum with avoidance of harmful interference (e.g. those identified in ERC/DEC/(97)03 and ERC/DEC/(97)05). Consequently, the antenna must not be connected to a signal source generating spurious emissions.