User's Manual

Sistema FIREMASTER III "Millennium" Manuale di istruzioni

4.5.2 Antennas

1) The antenna supplied with the FIREMASTER III "Millennium", is

INTEGRAL WITH THE INSTRUMENT and it is used the same type

both for the Base Unit TX2000 and the Remote Units RX24-B. These

antennas are whip type in λ/4 resonating at 40,700MHz. The antenna is

realized completely in fiberglass, and it is very flexible and fire resistant.

The connection to the Unit is pivot-type one with wing nut.

2) In order to obtain the best results concerning the radio coverage field, even

in presence of natural or artificial obstacles, the Remote Units should be

placed at least ONE METER above the ground. Remember as, consistently

with the terrain type and the show's needs, HIGHER THE ANTENNAS

ARE PLACED, MORE COVERAGE RANGE IS OBTAINED AND THE

SAFETY MARGIN IS INCREASED ACCORDINGLY.

3) The metal parts of the antennas (CONNECTOR, SPRING, WING NUT)

ARE ELECTRICALLY ACTIVE: AVOID ANY CONTACT WITH

ANY OTHER METAL PART OF THE CASE (SWITCHES,

HANDLES, LINE CABLES, ETC). Avoid also any contact with the

antennas of the next Units and other metal objects. IN GENERAL: the

antennas must be installed in VERTICAL POSITION, far from any other

object by at least 2 meters.

4) The reading of the field strength, in dBµV, displayed on the base Unit

TX2000, give a good indication about the system ability to communicate.

Avoid to operate when the reading is BELOW 15dBµV: it could happen

some problem of partial data decoding with the result of SOME MISFIRE

AT THE FIRST ATTEMPT (IN ANY CASE IT IS ABSOLUTELY

EXCLUDED ANY RISK OF PREMATURE OR UNDUE FIRE!!!).