Telex RadioCom TR-300, RadioCom BTR-300 Operating Instructions Manual
Telex
R
Op er ating In struc tions
PROFESSIONAL
WIRE LESS
IN TER COM SYS TEM
TR-300, BTR-300
TA BLE OF CON TENTS
IN TRO DUC TION ........................................................... 1
GEN ERAL DE SCRIP TION .................................................. 1
BTR-300 BASE STATION TRANS CEIVER ..................................... 3
SPEC I FI CA TIONS ..................................................... 3
FEA TURES ........................................................... 4
CON TROLS AND CON NEC TIONS ........................................... 5
TR-300 BELT-PACK TRANS CEIVER .......................................... 9
SPEC I FI CA TIONS ..................................................... 9
FEA TURES .......................................................... 10
CON TROLS AND CON NEC TIONS .......................................... 10
EQUIP MENT SET-UP ...................................................... 13
BTR-300 SET-UP ......................................................... 13
AN TENNA IN FOR MA TION ................................................ 16
TR-300 SET-UP ............................................................ 23
PRE-WALK-THRU CHECK LIST ............................................ 24
SYS TEM OP ER A TION ..................................................... 25
BTR-300 OP ER A TION .................................................... 25
TR-300 OP ER A TION ...................................................... 26
EN ABLING AU DIO ....................................................... 27
SETTING SYS TEM GAIN LEVELS ......................................... 28
SYS TEM WALK-THRU ..................................................... 29
TROU BLE SHOOTING ..................................................... 30
BAT TERY IN FOR MA TION ................................................. 31
AC CES SORIES ............................................................ 33
CUS TOMER SER VICE IN FOR MA TION ...................................... 34
FCC IN FOR MA TION ....................................................... 35
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IN TRO DUC TION
GEN ERAL DE SCRIP TION
This man ual cov ers the BTR-300 Base Sta tion
and the TR-300 Por ta ble Trans ceiver.
The RadioCom Models BTR-300 and TR-300
were spe cif i cally de signed to pro vide the user
with a highly flex i ble wire less two-way com mu ni ca tion sys tem with the ca pa bil ity to in ter face with a wired in ter com sys tem and other
aux il iary au dio.
At the BTR-300 op er a tor’s com mand, the
remotes may com mu ni cate with each other,
with a wired in ter com sys tem or with an aux il iary sys tem. The BTR-300 Base Sta tion with
its one trans mit and four re ceive chan nels is
de signed to op er ate in full du plex (si mul ta neous two-way communications) with up to
four TR-300 Belt Pack trans ceiv ers. See block
di a gram in Fig ure 1.
Fig ure 1
Block Di a gram of Sys tem
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The sys tem op er ates on se lected fre quen cies
within the 150-216 MHz band.
The BTR-300 sys tem is fully com pat i ble with
a num ber of other wired in ter com man u fac tur ers units. See the BTR-300 Setup Sec tion for
additional in for ma tion.
The TR-300 Trans ceiver op er ates in the con tin u ous trans mit mode with the au dio ac ti vated
by a switch. As many as four TR-300
belt-pack trans ceiv ers can op er ate in a fully
du plex net work with one RadioCom Model
BTR-300 Base Sta tion.
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BTR-300 BASE STATION TRANS CEIVER
TECH NI CAL IN FOR MA TION
SPEC I FI CA TIONS BTR-300
In put Power (min i mum) .................................................................................... 12V AC/DC at 360 mA
In ter com Out put ......... 330 mV (Low) or 1 V (Hi) RMS into 300 ohm load typ i cal (at rated de vi a tion)
In ter com Input (Gain Min i mum) ......................................... 300 mV RMS typ i cal (for rated de vi a tion)
Aux il iary Out put ............................................. 2 V RMS into 600 ohm load typ i cal (at rated de vi a tion)
Aux il iary In put (Gain Max i mum) .......................................... 60 mV RMS typ i cal (for rated de vi a tion)
Lo cal Head set In put ....................................................................................... 2 mV RMS in put nom i nal
1.5 mV RMS in put at com pres sion (Dy namic)
Lo cal Head set Out put ............................................................. 32 mV max i mum out put into 600 ohmst
Tem per a ture Range ................................................................................. -4
Dimensions ............................................................................................. 15.75” W x 1.75” H x 10.5” D
Weight ................................................................................................... ............................. 4.5 lbs (2 kg)
Trans mit
RF Fre quency Range ................................................................................................... ..... 150-216 MHz
RF Fre quency Sta bil ity ................................................................................ Crys tal Con trolled, 0.005%
RF Power Out put ................................................................................................... ......... 50 mW Typ i cal
Mod u la tion ................................................................................................... ........ FM, 3 KHz de vi a tion.
Trans mit An tenna ................................................................................................... .5/8-wave (sup plied)
Mod u la tion Lim iter ................................................................................................ In ter nal Com pres sor
Mod u la tion Fre quency Range ............................................................................ 300 to 5000 Hz ±2 dB
Ra di ated Har monics and Spu ri ous Emis sions .......................................................................... -45 dBC ,
FCC ............................................................................................. Type Ac cepted Un der Parts 90 and 74
°F to 130° F (-20° C to 55° C)
(40 cm x 4.5 cm x 26 cm)
115 mi cro-seconds Pre-emphasis
SO239 con nec tor on chas sis
Ex ceeds FCC Spec i fi ca tions
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SPEC I FI CA TIONS BTR-300 (Cont.)
Receive
RF Fre quency Range ................................................................................................... .... 150-216 MHz
RF Fre quency Sta bil ity ................................................................................ Crys tal Con trolled, 0.005%
Type ............................................................................................ Dual con ver sion super het ero dyne, FM
RF Sen si tiv ity ................................................................................ Less than 0.5 µV for 12 dB SINAD
IF Se lec tiv ity ........................................................................ 3 dB at 30 kHz (4 pole Monolythic Fil ter)
Im age Re jec tion ................................................................................................... ........... 65 dB or better
Squelch Quieting ................................................................................................... ........................ 90 dB
Squelch Thresh old ................................................................................................... ..... 1.0 µV (In ter nal)
Sig nal-to-Noise Ra tio .................................................................................................................... 90 dB
Re ceive An tenna ................................................................................................... ... 5/8-wave (sup plied)
SO239 con nec tor on chas sis
Dis tor tion ................................................................................................. Less than 1% at Rated Out put
FEA TURES
The RadioCom Model BTR-300 is a Base
Station with one trans mit ter and four re ceivers. It is de signed for por ta ble two way
com mu ni ca tion with the ca pa bil ity for in ter face to other au dio sys tems. Fea tures in clude:
• An ex tremely flex i ble unit that has the ca pa -
bil ity to com mu ni cate at one time with up to
four por ta ble sta tions and wired sta tions (in ter com and/or other au dio source).
• Powered by an ex ter nal AC sup ply via the
power jack on the rear of the unit. It can
also be pow ered by any 12V AC/DC 700
mA source.
• In ter com con nec tions with the abil ity to in -
ter face with most wired in ter com sys tems.
• RF light in di ca tor for each por ta ble station.
• All metal case for su pe rior shielding.
• Ta ble or rack mountable.
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CON TROLS and CON NEC TIONS
1
2
3
4
FRONT PANEL (Re fer to Fig ure 3)
Power ON/OFF Switch: Push this switch
once to turn power ON; push it again to turn
the power OFF.
Mic On-Push-to-Talk/Lock-to-Talk Switch:
En ables the lo cal head set mi cro phone au dio
func tion.
Power ON In di ca tor: The Power ON light is
il lu mi nated when the Power ON/OFF Switch
is pushed in the ON Po si tion.
Lo cal Head set Con nec tor: 4 Pin XLR Con nec tor for In put/Out put. The head set jack will
ac cept many Telex model head sets. Com pat i ble with other intercom head sets with four pin
XLR con nec tors that are wired as shown in
Fig ure 2.
NOTE: DOES NOT con trol base sta tion RF
transmit.
Lo cal Push-to-Talk In di ca tor: Will be il lu mi nated when ever the talk func tion is on.
Lo cal Mi cro phone Gain Con trol and
Overmodulation In di ca tor: A screw driver
ad just able con trol is pro vided to con trol the
in put level of the lo cal head set mic . This in put
is pro tected from over loads by means of a gain
com pres sor whose op er a tion is sig naled by the
gain light in di ca tor.
Por ta ble En able Switches and In di ca tors:
When in the “IN” po si tion, the En able
switches al low the user of the cor re spond ing
por ta ble unit to be heard by oth ers con nected
to the sys tem. When in the “OUT” po si tion,
the re spec tive por ta ble will be muted, but this
por ta ble will still be able to hear all other se lected remotes and in ter faces. The in di ca tors
(Por ta ble Trans mit On) nor mally show the
pres ence of a por ta ble trans ceiver in use on the
chan nel cor re spond ing to that in di ca tor.
Fig ure 2
Head set XLR Con nec tor Wiring
Lo cal Head set Vol ume: Ad justs vol ume to
Lo cal Head set. DOES NOT AF FECT MI CRO PHONE GAIN .
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Ex ter nal In ter com Switch, Level Con trol,
and in di ca tor: This switch en ables the wired
in ter com in ter face when “IN”, and dis ables it
when “OUT”. For RTS in ter coms, the “IN”
po si tion is chan nel 1 and the “OUT” po si tion
is chan nel 2. A screw driver ad just able con trol
is pro vided to con trol the in put level of the
wired in ter com.
Aux il iary Au dio En able Switch, Level Con trol, and In di ca tor: The switch en ables and
dis ables the Aux il iary in ter face when “IN”
and “OUT”, re spec tively. The func tion of the
level control here is the same as that de scribed
for the in ter com.
REAR PANEL (Re fer to Fig ure 4)
Trans mit and Re ceive An tenna Con nec tors:
At tach 5/8-wave an ten nas (sup plied) to these
con nec tors; An tenna color should match the
“color dot.”
Trans mit Switch: Slide switch that al lows the
op er a tor to se lect one of three trans mit modes.
In the “OFF” po si tion, the trans mit ter is al ways off. This mode may be used if the base is
func tion ing solely as a mon i tor. In the
“CONT” po si tion, the trans mit ter is al ways
on. This con tin u ous mode is rec om mended
over the “RE MOTE” mode. In the “RE MOTE” po si tion, the trans mit ter is en abled
only when one or more portables are ac tive.
Head set Mi cro phone Se lect Switch: This
switch al lows the user to se lect ei ther an
Electret or Dy namic mi cro phone.
In ter com Con nec tors: Con nec tions to in ter face the BTR-300 with a wired in ter com sys tem.
Aux il iary Out put/In put Con nec tors: Can be
used for 2-way (four wire) in put and out put to
the BTR-300 or as a sim plex in put or out put.
Typ i cal uses are 4 wire in ter com’s, tape re cord ers, pub lic ad dress in puts or out puts.
Power Jack: For ex ter nal AC sup ply adap tor
(sup plied).
Speaker Jack: Al lows the use of an ex ter nal
mon i tor if de sired. An 8 ohm speaker is rec om mended.
Speaker Volume Con trol: Screw driver ad just able. Ad just clock wise to in crease speaker
volume or coun ter clock wise to de crease
speaker volume.
NOTE: Leave set ting coun ter clock wise if no
speaker is at tached.
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TR-300 BELT-PACK TRANS CEIVER
TECH NI CAL IN FOR MA TION
SPEC I FI CA TIONS TR-300
Over all
Power Re quire ments ............................................................... 6 AA cells (Al ka line, NEDA , MN 1500)
Nickel-metal hy dride op tional
Cur rent Drain ................................................................................................... ................. typ i cal 82 mA
Tem per a ture Range ................................................................................. -4°F to 130°F (-20°C to 55°C)
Di men sions ............................................................................................... 4.25” W x 4.125” H x 2.0” D
(108mm x 105mm x 51 mm)
Weight ................................................................................................... ....... 13 oz (369g) with bat ter ies
Trans mit An tenna ............................................................................................ 1/4-wave wire (at tached)
Re ceive An tenna .............................................................................................. 1/4-wave wire (at tached)
Trans mit
RF Fre quency Range ........................................................................................................ 150-216 MHz
RF Fre quency Sta bil ity ................................................................................ Crys tal Con trolled, 0.005%
RF Power Out put ................................................................................................... ......... 50 mW Typ i cal
Mod u la tion ................................................................................................... ..... FM, 3000 Hz de vi a tion,
115 mi cro-seconds Pre-emphasis
Mod u la tion Lim iter ................................................................................................ In ter nal Com pres sor
Mod u la tion Fre quency Range ......................................................................... 300 to 5000 Hz +/_ 2 dB
Mi cro phone Au dio In put .............................................................................................. 30 to 3500 ohms
Mi cro phone In put Sen si tiv ity ................................................................. 2 mV Dy namic, 4 mV Electret
Ra di ated Har monics and Spu ri ous Emis sions .......................................................................... -45 dBC ,
Ex ceeds FCC Spec i fi ca tions
FCC ............................................................................................. Type Ac cepted Un der Parts 90 and 74
RF Fre quency Range ........................................................................................................ 150-216 MHz
RF Fre quency Sta bil ity ....................................................................... Crys tal Con trolled, 0.005% Type
RF Sen si tiv ity ................................................................................. Less than 0.5 µV for 12 dB SINAD
IF Se lec tiv ity ........................................................................................3 dB at 30 kHz (Ce ramic Fil ter)
Im age Re jec tion ................................................................................................... ........... 70 dB or better
Squelch Quieting ................................................................................................... ........................ 90 dB
Squelch Thresh old ................................................................................................... ..... 3.0 µV (In ter nal)
Sig nal-to-Noise Ra tio .................................................................................................................... 90 dB
Au dio Out put ...................................................................................... 32 mW into 600 ohms (Head set)
Dis tor tion ................................................................................................. Less than 1% at Rated Out put
Re ceive
Dual Con ver sion Super het ero dyne, FM
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FEA TURES
• Light weight, small size and is
self-contained.
• 2 sep a rate an ten nas, one for trans mit, the
other for re ceive.
CON TROLS AND CON NEC TIONS
EX TER NAL CON TROLS (Re fer to Fig ure 6)
Vol ume OFF/ON Con trol: This thumbwheel
con trol serves as both an off/on switch and as
a vol ume con trol.
Low Bat tery and Overmodulation
In di ca tor Light:
Low Bat tery In di ca tor: Part of the bat tery
check cir cuit. When the power switch is
placed in the “ON” po si tion the light will
flash one or more times if the bat tery is
good. A poor bat tery will cause the light to
il lu mi nate continuously and a bad or un us able bat tery will not cause any illumination
at all.
• Push-to-Talk with Lock-to-Talk fea ture
switch for the TR-300 and Push-to-Transmit
with Lock-to-Transmit fea ture for the
TR-300P.
Head set Jack: A four pin XLR con nec tor for
In put/Out put. The head set jack will ac cept
many dif fer ent Telex model head sets. Com pat i ble with other intercom head sets with four pin
XLR con nec tors that are wired as shown in
Fig ure 5.
Charge Jack: Al lows nickel-metal hy dride
bat ter ies to be charged with out re mov ing them
from the unit.
Overmodulation In di ca tor: Uses the same
light as the low bat tery in di ca tor. Dur ing the
talk mode, if the mi cro phone gain is too
high, the light will il lu mi nate when talk ing.
Push-To-Talk, Lock-To-Talk Switch:
This switch en ables the talk func tion.
Talk In di ca tor Light: (La beled “talk”) will
be il lu mi nated when ever the talk func tion on
the TR-300 is en abled.
Fig ure 5
Head set XLR Con nec tor Wiring
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