Reflector Mounting Instructions
|ISO 8729/RORC/ORC recommend a mounting
height of not less than 4m above sea level.
Yachts - Halyard Mount
reflectors use a symmetrical arrangement of interacting corners.
Whilst its centreband response pattern is maintained at 15°
tilt RCS is -5dB. To counter this, and avoid 'mast shadow'.
Pass a bight over the yardarm via a dead eye. Return bight
through reflectors eye and secure taking lines through bight.
Take tails through reflectors bottom eye and then to separate
cleats via loops at --xx--.
yachtsmen will be aware of the need to trim the reflector when
on the reverse tack, failure to do so will result in compounding
the angle of heel rendering the reflector inefficient.
Note: Reflector trimmed to leeward 15°. Mast heeling to
Echomax 230mm response = 6m².
Yachts - Mast Mount
Echomax may be fitted in any
position around the mast (i.e fore or aft).
Hypothetical figures on mast shadow may be viewed here.
Utilising Echomax stainless steel mast brackets fit reflector
as high as possible on the mast, using Monel or stainless steel
rivets (3/16 x 1/2" 4.8 x12.7mm). To avoid electrolytic
action use zinc chromate paste between bracket and mast or closed
cell foam tape. Firstly fix top bracket to mast in the required
position, measure distance vertically between centres, mark
position of lower bracket then drill and fix. Use two stainless
steel hexagonal bolts 8mm dia x 30mm long to fix Echomax to
the mounting brackets.
Vessels - Mast or Deck Mount
|If the vessel has a mast fit as
above, or use Exhomax deck mounting bracket. Custom made stainless
steel stern mounting brackets/poles are available to special order.
|Midi Basemount is designed for A
frames, pole mounting or base mount with suitable base for fixing
on wheelhouse roofs. Use four 10mm stainless steel bolts of the
appropriate length at 80mm PCD. It is essential that 17mm stainless
steel washers are used to spread the load between the bolt head
and the Echomax flange mount base. As Polyethelene is subject
to very slight expansion or contraction due to temperature changes
periodical checking of the fixing is advised.
fitting when radar is installed
The best position to mount your
radar will be on a frame loop over the radar, which can utilise
other antenna, spot lights etc. This would allow 360-degree
Second best position is on the same frame as the radar providing
it is below the rotating array horizontal beam width of 22/25
degrees. The Midi base mount is 432mm high. Perhaps you would
draw a scale metric drawing to see if and how far away the reflector
could be mounted so as not to interfere with the radar transmissions.
If you were able to mount the reflector on the same frame as
the radar then you would have considerable shadow from the reflector
With the above in mind you will not have any loss of performance
by mounting the units close together as the Echomax Midi is
a passive device. Typical installations by Sunseeker and Hardy
are shown below with Echomax mounted above the radar on a custom
Will the reflector affect VHF performance?
Being a passive device, Echomax will not affect your VHF response,
however since VHF is line of sight loss of signal may occur
if situated between aerial and transmitter.
when radar is installed – Interference
Echomax should not be mounted
on the same plane as a radar horizontal beam width transmission
of 22/25 degrees. Install ideally above the radar on a purpose
made loop, see Hardy – Sunseeker installations .
Being a passive device mounting in close proximity to other
antenna will not affect their performance electrically but may
restrict/shadow their reception/transmission of the signal particularly
VHF which is in line of sight, if concerned check with the manufacturer
of the equipment in question.
CAUTION SHOULD BE USED WHEN DRILLING
ALUMINIUM MASTS IN CASE INTERNAL WIRING EXISTS
Echomax REFLECTORS ARE NOT SUITABLE
FOR HORIZONTAL MOUNTING.
THESE UNITS MUST NOT BE PUT UNDER WINCH PRESSURE. DAMAGE RESULTING
FROM SUCH USE IS NOT COVERED BY WARRANTY