Telex Marine Radio ur 700 User Manual

®
Telex  
Operating Instructions  
UR-700  
 
Displays  
1. A 5 segment LED light array for AF that aids in setting microphone  
gains and monitoring receiver microphone and line level outputs.  
Light numbers 4 and 5 have a Peak Hold feature.  
2. A 1 segment LED light for RF that aids in checking the transmitter  
and monitoring for the possibility of initial interference.  
3. A 2 segment LED array that indicates diversity action and antenna  
configuration.  
Audio Outputs  
An XLR type connector and 1/4" phone jack are located on the rear  
panel providing either line level or microphone level audio output.  
The line output level is adjustable with a screwdriver accessible  
potentiometer.  
Power  
The UR-700 will operate from the supplied AC adapter or any  
nominal 12-15 volt AC/DC 300 mA supply.  
Audio  
The UR-700 audio circuitry is designed to complement the transmit-  
ter audio. A compandor circuit is utilized to enhance the dynamic  
range.  
-2-  
 
UR-700 Receiver  
Specifications  
Frequency Range. . . . . . . . . . . . . . . . . . . . . . . 690-725 MHz  
R.F. Stability . . . . . . . . . . . . . . . . . . . . . . . . 0.005% or better  
Modulation Type. . . . . . . . . . . . . . . . . FM, 40 KHz nominal  
Type. . . . . . . . . . . . . . . . . . Single Conversion, 10.7 MHz I.F.  
I.F. Bandwidth. . . . . . . . . . . . . . . . . 230 KHz at -3 db points.  
Image Rejection . . . . . . . . . . . . . . . . . . . . . . . 65dB or better  
Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Amplitude  
Audio Output . . . . Line Level: 0.775V RMS/100k load (MAX.)  
Mic Level: -20 dBV, 600 Ohm load  
Receiver Sensitivity . . . Less than 0.8 uV for 12 dB SINAD  
FCC. . . . . . . . . . . . . . . . . . . . . . . . . . . . Notification, Part 15  
Diversity . . . . . . . . . . . . . . Continuous Posi Phase Diversity  
Both antennas are fully employed at all times  
to maximize signals.  
FCC I.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B5DR307  
-3-  
 
Model HT-700 Transmitter  
Specifications  
Power Output (Terminated). . . . . . . . . . . . . . . . . . . . 10 mW,  
Antenna. . . . . . . . . . . . . . . . . . . . . . . . Permanently attached.  
Modulation . . . . . . . . . . . . . . . . FM, +/- 40 KHz Deviation,  
50 us pre-emphasis.  
Frequency Response (System) . . . . . . . . 50 Hz to 15000 Hz  
Microphone. . . . . . . . . . . . . . . . . . . . . . Dynamic or Electret  
DC Power . . . . . . . . . . . . . . . . . . . . 9 volt Alkaline Batteries  
Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 12 Hours  
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . FCC, Part 74H  
Industry Canada, RSS123  
FCC I.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B5DH208A  
-4-  
 
Model WT-700 Transmitter  
Specifications  
Power Output (Terminated). . . . . . . . . . . . . . . . . . . . . 10 mW  
Antenna. . . . . . . . . . . . . . . . . . . . . . . . Permanently attached  
Modulation . . . . . . . . . . . . . . . . . FM, +/- 40 KHz Deviation,  
50 us pre-emphasis.  
Frequency Response (System) . . . . . . . . 50 Hz to 15000 Hz  
Microphone. . . . . . . . . . Dynamic or Electret, + 5 VDC Bias  
Microphone Sensitivity. . . . . . . . . . 7.8 mV for full deviation  
DC Power . . . . . . . . . . . . . . . . . . . . 9 volt Alkaline Batteries  
Battery Life . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 to 12 Hours  
Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . FCC, Part 74H  
Industry Canada, RSS123  
FCC I.D. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B5DB108A  
-5-  
 
Figure 1  
Front Panel  
Power Switch: When turned on, one of the diversity lights will  
illuminate.  
RF Display: A 1-segment LED Display indicates the presence of the  
signal from the transmitter.  
LED’s indicate diversity operation.  
Diversity Display:  
AF Display: A 5-segment 3 color LED Display indicates the relative  
modulation of the microphone.  
Squelch: Adjustable for maximum range or minimum interference.  
-6-  
 
Figure 2  
Rear Panel  
Antenna Jacks: Two antenna jacks for posi phase diversity recep-  
tion. Attach an antenna to each jack.  
XLR type jack connects to balanced mic input of audio  
Mic Level:  
sound system (Amplifier/Mixer). Pin 1 ground, Pin 2 +, Pin 3 -.  
Line Level: 1/4" jack with screwdriver adjustable unbalanced audio  
output. Use supplied screwdriver to adjust to desired level.  
Power Jack: For external AC wall supply adapter (supplied). Will  
accept 12-15 volts AC/DC at 300 mA. Plug size is 2.1mm x 5.5 mm.  
To prevent accidental pull out of the power  
Power Cord Retainer:  
plug.  
-7-  
 
Receiver Set-up  
Connect the supplied AC power adapter to an AC outlet supplying  
105 to 125 volts AC, 60 Hz. The 230 volt export model should  
connect to an AC outlet supplying 210-240 VAC, 50-60 Hz.  
Connect the UR-700 to your equipment:  
Insert the appropriate audio connector and cable into the mic or  
line receptacle on the rear of the UR-700.  
Insert the other end of the audio cable into the input of your  
Mixer/Amplifier.  
If utilizing the two 1/4 wave antennas supplied, connect both of them  
to the back of the receiver at a 90 angle as shown in Figure 3. Tighten  
the connectors securely. (If using other types of antennas, refer to the  
placement instructions on page 14 of this manual.)  
Figure 3  
Antenna Mounting  
-8-  
 
Figure 4  
HT-700  
HT-700  
Power and Mute Switches: Located on the bottom of the handle.  
Microphone Gain: Controls the gain of the audio circuit to prevent  
under or over modulation.  
Set-Up  
NOTE: Do not use carbon-zinc batteries. 8.4 volt Ni-Cad batteries  
may be used but will yield shorter run times.  
Unscrew the handle and install a 9 volt alkaline battery. Be sure  
the battery polarity matches the diagram inside the battery holder.  
Screw the handle back on.  
Do not turn on at this time.  
-9-  
 
Figure 5  
WT-700  
WT-700  
Power and Audio Switches: Located on the top of the case.  
Controls the gain of the audio circuit to prevent  
Microphone Gain:  
under or over modulation.  
Microphone Jack: wired as follows:  
Pin 1  
Pin 2  
Pin 3  
Pin 4  
Ground  
Mic  
+5 volt bias  
+5 volt bias fed through a 3K ohm  
resistor for 2 wire electrets.  
-10-  
 
Set-Up  
NOTE: Do not use carbon-zinc batteries. 8.4 volt Ni-Cad batteries  
may be used but will yield shorter run times.  
Open the battery door and install a 9 volt alkaline battery. Be sure the  
battery polarity matches the diagram inside the battery holder.  
Close the battery door.  
Insert the microphone plug into the connector.  
Do not turn on at this time.  
System Set-Up  
When employing two or more wireless systems, the micro-  
NOTE:  
phones should be a minimum of 10-15 feet away from the receivers  
to prevent “front-end” overload.  
Turn on the receiver. Check the RF light. If it is on, this indicates  
potential interference.  
The squelch control on the front of the receiver may be adjusted to  
increase range or reduce interference. Turn the control counter-clock-  
wise to increase range. CAUTION! DOING SO WILL MAKE  
YOUR SYSTEM MORE SUSCEPTIBLE TO OUTSIDE IN-  
TERFERENCE! Turn the control clockwise to reduce interference  
from noise and out side radio signals. It is best to set the squelch with  
the transmitter turned off. Turn the control counter-clockwise until  
you hear noise or interference over your sound system. Then turn it  
clockwise until the noise is squelched off. This setting will give you  
your best interference free range. Remember, too much squelch will  
reduce range.  
Turn on the microphone power switch. When the power switch is  
turned on, the battery light will flash one time if the battery is good.  
If the light does not flash or stays lit continuously, the battery is weak  
or dead. If the light comes on during use, the battery is weakening  
and should be replaced as soon as possible.  
-11-  
 
The RF light on the receiver should now be illuminated. Turn on the  
audio (mic) switch. Speak into the microphone and adjust its gain so  
that the Audio Meter on the receiver just illuminates the 0 (or yellow)  
light on the loudest sounds.  
If necessary, vary the line level on the back of the receiver to suit your  
equipment.  
Walk the transmitter through the expected use area to check for  
“drop-outs”. To minimize the chance for drop-outs, read the section  
on antenna placement.  
Antenna Placement  
The antennas and UR-700 should be placed in a location with a clear  
“signal path” to the transmitter. This “path” should be as short and  
free of obstructions as possible. Obstructions, such as walls, ceilings,  
and metal objects, will reduce range and performance.  
Do not rack mount the UR-700 with the antennas attached  
directly on the back of the unit. This will severely decrease the  
range and performance of the system.  
Antenna Placement for Optimum Range and Rack Mounting  
For better range and when rack mounting, the antennas must be  
located on the front of the rack mounts or use optional ground  
independent antennas and remote mount them. See the accessories  
section of this manual for cable kits to front mount the antennas.  
Remote mounting antennas will increase the effective reception range  
when appropriately positioned. The two 1/4 wave antennas supplied  
are not ground independent and therefore not appropriate for remote-  
mounting. See the accessories section of this manual for remote-  
mountable antenna options.  
-12-  
 
The diversity antenna system operates most efficiently when the two  
antennas are separated as much as possible.  
The antennas should be mounted so that they are at least 6 feet (2  
meters) apart for best results. They should be at least 2 feet (60 cm)  
from nearby objects.  
Accessories for remote antenna mounting are listed in the back of this  
manual. See Figures 6 and 7 for suggested mounting options.  
Bracket Mounting  
The antenna brackets may be either mounted on mic stands or secured  
to some other object with the hardware provided.  
Figure 6  
Bracket Mounting  
-13-  
 
Figure 7  
Antenna Placement with Accessory Brackets and Cables  
If possible, do not mount the brackets on a wall. See Figure 7 for  
bracket and antenna placement.  
Antenna Connection  
Attach the two antenna cables to the back of the UR-700. Be sure the  
connectors are tightened securely. Route the cable to the antennas and  
attach in the same manner.  
-14-  
 
Installing Rack Mounts  
The UR-700 is supplied with rack mounts for both double and single  
mounting in a 19" equipment rack. For single mounting, the long and  
short rack “ears” are used. For dual mounting, use the short “ears  
and the mid brackets from two UR-700’s.  
Item  
No.  
1
Description  
Rack Ear, short  
2
Mid Bracket  
3
Rack Ear, long  
4
5
6
Screw, #6-32 x 3/8" Phillips, pan head  
Screw, #6-32 x 3/16" Phillips, flat head  
Screw, #10-32 x 3/8" Phillips, pan head  
Figure 8  
Assembly of Rack Mount  
Assembly  
To assemble the rack mount to the unit(s) and install it into a 19" rack,  
proceed as follows:  
Remove the front Phillips head screws from each side of each unit.  
Refer to Figure 1.  
Align the rack ear (Item No. 1 or 3) with the holes on the side of  
the unit. Install the previously removed screws. Insert an additional  
screw (Item No. 4 provided in the parts pack) into the remaining  
hole. Repeat this step for the opposite side of the unit. Tighten all  
screws securely.  
-15-  
 
Double Mounting:  
Align the mid brackets (Item No. 2) with the holes on the adjacent  
sides of each unit.  
Install the previously removed screws. Insert an additional screw  
(Item No. 4 provided in the parts pack) into the remaining holes.  
Tighten all screws securely.  
Place the two assemblies side by side with the mid brackets  
together. (The left bracket should fit above the right so that the  
countersinks are visible.) Install 4 flat head screws (Item No. 5)  
Tighten all screws securely.  
Place the assembly into the 19 inch rack enclosure and insert four  
#10-32 x 3/8" Phillips pan head screws (supplied) in each corner of  
the rack ears and secure to your enclosure.  
-16-  
 
ACCESSORIES AND REPLACEMENT PARTS  
Model CLA-5 - 1/2 Wave Antenna  
- for remote mounting.  
Order No. 870658-5  
Model AB-2 Combination Antenna Bracket  
with hardware and 10 foot (3 meter) coaxial cable  
TNC Connectors. Use with Model CAL-5 Antenna.  
Order No. 71138000  
1/4 Wave Replacement Antenna  
Part No. 879010  
AC Power Supplies  
120 Volt, 60 Hz  
730131  
230 Volt, 50 Hz U.K. 730103-1  
230 Volt, 50 Hz Euro. 730104-1  
-17-  
 
Model ALP-450 450-900 MHz Directional Log Periodic Antenna  
includes mounting hardware and 10 foot (3 meter) coaxial cable with  
TNC Connectors. 9 1/2" long x 11" high. Unique forward coverage  
pattern increases signal gain up to 5 db. Covers all frequencies and  
increases range.  
Order No. 71147000  
Model UAD-2 Four Way Antenna Splitter  
Order No. 71253000  
Feeds four UR-700’s with just two antennas. Also supplies power.  
Eliminates 3-power supplies and 6 antennas.  
Front Connector Mounting Kit  
Part No. 878978  
This kit consists of 4 cable and connector assemblies with “TNC” type  
connectors. They attach to the rack mounts by removing the filler  
plugs and installing a single nut.  
-18-  
 
FCC INFORMATION  
The TELEX Receiver UR-700 is authorized under Part 15 of the  
Federal Communication Commission. Licensing of TELEX equipment  
is the user’s responsibility and licensability depends upon the user’s  
classification, and frequency selected. TELEX strongly urges the user  
to contact the appropriate telecommunications authority before ordering  
and choosing frequencies other than factory preset frequencies.  
The Telex WT-700 and HT-700 Transmitters are Type Accepted under  
United States Federal Communications Commission Part 74. Licensing  
of Telex equipment is the user’s responsibility and licensability depends  
upon the user’s classification, user’s application, and frequency selected.  
Telex strongly urges the user to contact the appropriate telecommunica-  
tions authority for any desired clarification.  
CAUTION: Any changes or modifications made to the above equip-  
ment could void the user’s authority to operate the equipment.  
-19-  
 
CUSTOMER SERVICE INFORMATION  
If your receiver or transmitter should need servicing under the warranty,  
please contact:  
Customer Service Department  
TELEX COMMUNICATIONS, INC.  
8601 East Cornhusker Highway,  
P.O. Box 5579,  
Lincoln, Nebraska 68505-5579 U.S.A.  
Phone: (402) 467-5321 or 465-7021  
FAX: (402) 467-3279  
All claims of defect or shortage should be sent to the above address. When  
returning items for service, you must provide date and proof of purchase,  
such as a copy of the sales receipt, to establish warranty. A letter should be  
included outlining all symptoms and claimed defects. Information on how  
the equipment was installed and used is very helpful. Please include your  
phone number and return address in case our service technicians need to  
contact you.  
Units that have been modified cannot be accepted for repair.  
Include all information requested by the Service Department. Then pack the  
unit as follows:  
Check the unit to see that all parts and screws are in place. Then wrap it in  
heavy paper or put it in a plastic bag. If the original carton is not available,  
place the unit in a strong carton that is at least six inches bigger in all three  
dimensions than the unit. Fill the carton equally around the unit with resilient  
packing material (shredded paper, excelsior, etc.). Seal it with gummed paper  
tape, tie it with a strong cord, and ship it by prepaid express, United Parcel  
Service or insured parcel post.  
It is very important that the shipment be well-packed and fully insured.  
Damage claims must be settled between you and the carrier and this can delay  
repair and return of the unit to you.  
Telex reserves the right to make changes in design and improvement on its  
product without assuming any obligation to install the same on any of its  
products previously manufactured. Further Telex reserves the right to ship  
new and/or improved products which are similar to the form, fit and function  
of products originally ordered.  
-20-  
 
TELEX COMMUNICATIONS, INC. 8601 East Cornhusker Highway w P.O. Box 5579 w Lincoln, Nebraska 68505-5579  
PN 801347  
APRIL 1998  
 

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