Operation Manual

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5
Welcome | Broadband 3G/4G™ Radar Installation Guide
FMCW = Frequency Modulated Continuous Wave
The scanner transmits a ‘rising tone’ (Tx wave) with linearly increasing frequency. The wave
propagates out from the transmitter retaining the frequency it had when it was transmitted. If
it re ects o an object, it will return to the receiver, still at the frequency it had when originally
transmitted.
Meanwhile, the transmitter continues to output an increasing frequency.
The di erence between both the currently transmitted and received frequencies, coupled with
the known rate of frequency increase, allows a time of  ight to be calculated, from which dis-
tance is calculated.
Additional bene ts of FMCW radar are:
Safety
• low energy emissions. 1/5th of a mobile phone
• safe operation in anchorages and marinas
• instant power up. No warm up required
Short range performance
• broadband radar can see within a few meters of the boat, compared to pulse radars,
which can not see closer than 30 meters
• higher resolution clearly separates individual vessels and objects
• Up to  ve times better sea and rain clutter performance
Low power
• suitable for small boats and yachts
• easier installation with lighter cabling and smaller connectors
• great for yachts on ocean passage
Instant power-up
• conventional radars take 2-3 minutes to warm up the magnetron: Safety – 2 minutes is a
long time if you are concerned about collision.
• convenience – switch it on and use it.
Easy to use
• no constant adjusting required to obtain optimum performance
• no re-tuning between ranges. Means fast range change at all ranges
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