Telex RadioCom BTR-300, Руководство по эксплуатации

Страница: 19 / 40

At tempting to op er ate the wire less in ter com
sys tem through or around walls, ceil ings, metal
ob jects, etc. will re duce sys tem range and per -
for mance.
SIG NAL RE FLEC TION OFF A METAL OB STRUC TION
CAUSES RE DUCED SIG NAL AND “MULTIPATH”
Fig ure 13
Op er ating Sys tem Near Ob struc tions
DO NOT - mount the BTR-300 5/8-wave an -
ten nas next to metal such as beams, walls with
metal studs, equip ment racks, etc. This also
ap plies to the an ten nas when as sem bled di -
rectly to the BTR-300. This will “de tune” the
re ceiv ing an tenna which can re sult in noise or
loss of RF sig nal at the BTR-300. See Fig ure
14.
IM PROVING RE CEP TION AND
IN CREASING RANGE
Keeping the dis tance from the base (BTR-300)
and the belt packs (TR-300) as short , and un -
ob structed as pos si ble will pro duce the most re -
li able per for mance.
The BTR-300 is sup plied with two an ten nas.
This should pro vide sat is fac tory sys tem per for -
mance in most ap pli ca tions. Sys tem range can
be en hanced by remoting the 5/8-wave re ceive
an tenna us ing the avail able ac ces so ries.
-15-
1. Placing the unit in an
e q u i p m e n t r a c k a n d
remoting the an ten nas
is GOOD. 2. Placing the unit ontop of
a shelf or equip ment
rack un ob structed with -
out remoting the an -
tenna is GOOD. 3. Placing the unit in an
equip ment rack with the
an ten nas mounted on
the BTR-300 or the side
of the rack is BAD.
Fig ure 14
BTR-300 An tenna Place ment