Sammen med Uni-Safe har vi et godt sommer tilbud på et begrænset antal af fabriksnye Sea-Me Aktiv Radar Reflektor til Kastrup Sejlklubs medlemmer.
Pris pr. stk. dkk. 1875,00. (Det er UNDER halv pris)
Normal salgspris for disse aktive reflektorer er 3.900,- dkk + moms
Tilbuddet gælder fra i dag og indtil 30/9-09.
Tag kontakt til formanden via email: flborch@gmail.com eller mob. +4560896686
Herunder kan du læse beskrivelse af Sea Me, hvor du bla.a. kan se hvorfor at det er godt med en aktiv radar reflektor i stedet for en passiv. Det er også muligt at få mere at vide om Sea-Me via denne link.
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The disadvantage of the passive reflector lies in the many directions in which its radar
cross section is low, resulting in a minimal return.
The polar plot shows that Sea-me has a much more even response pattern and suffers from
none of the gaps so typical of a passive device.
1. Greater detection range.
The strength of a radar signal falls off rapidly with distance. In the case of a passive
reflector this degradation takes place over a distance equal to double the range (radar
to target and back) whereas in the case of an active device, which is itself a
transmitter, it only falls off over the return distance - and from a much higher
amplified signal level. This means that Sea-me, an active device, has a greater
detection range than the typical passive reflector.
2. A more consistent return.
Ships today use a system known as ARPA (Automatic Radar Plotting Aid). This enables the
radar to emit an alarm when it acquires a target within its guard zones and thus to
alert the watchkeeper. Target acquisition will only take place if the radar receives
returns on at least 50% of scans. Two factors contribute to a consistent return - the
strength of the returned signal and, because small boats yaw and heel, particularly in
rough seas, the evenness of the return.
3. Better performance in clutter.
Performance in clutter (rain and wave) is all about signal strength. The single fact
that Sea-me emits a stronger signal means that it performs better in clutter.
4. Better performance at heel.
The effectiveness of a passive reflector falls off rapidly as the boat heels, as you
would expect of a device which is effectively a mirror reflecting in a single direction.
The Sea-me device shapes the beam to provide an effective return even when the boat is
heeled.
5. Ship detection alert.
Passive reflectors cannot give you any warning that you have been struck by a radar
signal indicating that there is a ship in your area.
Sea-me, being active, knows when it has received a signal and can alert you with a
flashing light, and if required, audibly. Sea-me thus enables you to sharpen up your
lookout when necessary.
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