Ramsey Electronics BS1 Instrukcja Obsługi Pobierz pdf (Strona 5)

SG7• 5

soldered in place very easily, so long as its creases are formed carefully.

The oscillator board, enclosed in its tin shield, is soldered to a metal can

assembly that has been prepared with TLC (Tender Loving Care). You will find

that both the oscillator shield and the can will solder very easily. After all, tin is a

major ingredient of solder. A 1.1" length of buss wire (supplied) extends through

a hole in the can from the oscillator board to serve as the 2600MHz antenna in

conjunction with the can itself!

A shielded 2-conductor cable and plug set (all parts supplied in the kit)

interconnects the LED Speed Counter unit and the radar gun itself.

Your SG7 Kit includes everything needed except 12V battery pack, battery

cable (a correct DC power plug IS supplied), and the two metal cans needed to

form the radar gun antenna housing. Included with your kit are the case and

hardware along with the front panel graphic for a nifty looking, finished off unit.

We'll give you a few ideas on how to make your SG7 Personal Speed Radar

unit as portable and practical as possible, but we know you will come up with

ideas of your own, too.

JUST IN CASE YOU DIDN'T KNOW...

There are many kinds of "radar" (Radio Detecting and Ranging) systems, most

of them associated with aviation and military applications. These types of

radars bring up images of domes, spinning antennas and radar screens. Your

SG7 SPEEDY is a type of portable radar system, typical of speed monitoring

equipment used in law enforcement, sports, and boating which rely on the

"Doppler effect".

The Doppler effect, first investigated by Austrian physicist C.J. Doppler in 1842,

is observed in ANY kind of wave motion: sound, light or radio waves. Here is a

definition to chew on:

The Doppler effect is the observed change in frequency of a waveform caused

by a time rate of change due to the effective distance traveled by the wave

between the source and the point of observation. As the time rate of distance

between you and a source of constant vibration decreases, the received

frequency is greater. As the time rate of distance increases, the frequency

decreases.

Imagine in your mind what you actually hear while a race car zooms past your

fixed position. Can you hear that change of "varoooom..." pitch and mimic it?

Now, ask yourself how the car sounded to the driver all along as you heard the

changing pitch of the zoom! This is one common example of the Doppler effect.

The whistle of a passing train is another example.

1 2 3 4 5 6 7 8 9 10 ... 35 36

Brak uwag

Ramsey Electronics BS1 Instrukcja Obsługi Strona 5