Comtek BST 75-216 Operator'S Manual Download | Manualshive

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BST 75-216 ACCESSORIES

Page 11

Optional Accessories

1.

Mini-Mite 1/2 wave

omni antenna

2.

Phase-Right

coaxial antenna

3.

PRA Phase-Right

antenna mount

4.

HM-100 Behind-the-neck

directional boom microphone
with 1/4” phone jack plug

5.

RMK 75-4 Quad

rack-mount face plate

6.

RMK 75-2 Double

rack-mount face plate

7.

RMK 75 Single

rack-mount face plate

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Summary of Contents for BST 75-216

Page 1: ...BST 75 216 OPERATOR S MANUAL 216 MHz 357 West 2700 South Salt Lake City Utah 84115 Phone 800 496 3463 Fax 801 484 6906 www comtek com Mini Base Station Transmitter ...

Page 2: ...ound to comply with the limits for a Class A digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmf...

Page 3: ... and open coaxial cable for quick and easy trouble shooting The audio processing circuit produces full fidelity frequency response from 100 Hz to 10 kHz with very low residual FM noise and distortion To accommodate a greater variety of receivers the BST 75 216 can operate with non companded receivers or with companded receivers for higher fidelity sound reproduction with a system signal to noise r...

Page 4: ... noise If a problem is found move the base station or the remote antenna as far as possible from the affected equipment Should you continue to have problems contact COMTEK s Technical Support Services for assistance Power Requirements The BST 75 216 base station is designed to be powered by 12 volts DC The standard barrel type power jack 5 5mm X 2 1mm is nonpolar and will accept either 12 volt DC ...

Page 5: ...ialty antennas contact COMTEK s Technical Support Services Short Loaded Whip BNC Antenna If the BST 75 216 base station transmitter is to be used outside of the traditional rack mounted environment for stand alone mobile type applications the short loaded whip antenna SLW 75 216 can be used The transmitter should be placed on a table or platform as high as possible and away from any metallic objec...

Page 6: ...smission fidelity the transmitter must be modulating at least 50 with normal speech 0 dB on the VU meter This adjustment is made in the following manner a Ensure that the audio source has been optimized for best signal to noise ratio b The XLR 3 connector located on the back of the transmitter is used for line level balanced or unbalanced audio source up to 20 dBm c Set the AF Gain Control on the ...

Page 7: ...em is however determined by the corresponding de emphasis and equalization used in the receiver In order to accommodate a greater variety of receivers the BST 75 216 transmitter incorporates the option to operate with receivers that have companded or non companded audio processing However the BST 75 216 transmitter must operate non companded with non companded receivers and companded only with rec...

Page 8: ...wer is on VU METER Displays the audio level being used for modulation See Audio Adjustment Section ANTENNA INDICATOR Flashes when transmitter detects coaxial cable shorts and open conditions bad antenna load RACK MOUNTING SCREWS Used for mounting BST 75 216 to rack mounting panels BST 75 216 FRONT PANEL Page 6 4 3 2 1 3 5 4 2 6 5 1 6 ...

Page 9: ...s the RF power output of the transmitter High 100 mW Mid 50 mW Low 25 mW AUDIO LEVEL CONTROL This control is used to set the proper modulation level when referenced with the VU meter MIC LINE AUDIO INPUT XLR 3 accepts balanced line level input 1 4 phone jack accepts AUX input or 2 conductor electret microphone COMPAND NON COMPAND SWITCH For high fidelity operation switch must be in compand positio...

Page 10: ...ON FREQUENCY 1 3 7 10 216 0250 216 1750 216 7250 216 9750 GROUP FREQUENCY CHARTS CHANNEL 41 44 55 60 GROUP A 2 4 6 9 216 0375 216 2750 216 5250 216 9250 42 46 51 59 GROUP B 3 5 8 10 216 1750 216 4250 216 8250 216 9750 44 49 57 60 GROUP C CHANNEL FREQUENCY 41 42 43 44 45 46 47 48 49 51 52 53 54 55 56 57 58 59 60 216 0250 MHz 216 0750 MHz 216 1250 MHz 216 1750 MHz 216 2250 MHz 216 2750 MHz 216 3250 ...

Page 11: ...ype of interference when multiple transmitters are used in the same proximity transmitting frequencies must be coordinated by selecting from frequencies in the same group See group frequency chart on page 8 Transmitter Proximities For Multiple Channel Operation Frequency groups being transmitted should be separated by 2X the operating area and for best performance the group operating areas should ...

Page 12: ...SORIES Included Accessories 1 C 75 Carrying case 2 BST75 216 Operator smanual 3 SLW 75 216 Short loaded whip antenna and bracket 4 AP 12V1 75 Universal switching power supply 12V DC output 5 BST 75 216 Base station transmitter ...

Page 13: ...ve omni antenna 2 Phase Right coaxial antenna 3 PRA Phase Right antenna mount 4 HM 100 Behind the neck directional boom microphone with 1 4 phone jack plug 5 RMK 75 4 Quad rack mount face plate 6 RMK 75 2 Double rack mount face plate 7 RMK 75 Single rack mount face plate ...

Page 14: ... 1 at 80 modulation Audio Gain Control Limited to 20 dB Modulation Limiter Peak compressor type with high linear overload protection 25 dB Attack time less than 1 ms recovery time 10 ms Audio Processing Companded and non companded to accommodate a variety of receivers RF Output Power Maximum power output for FCC Part 95 100 mW Frequency Stability Better than 0 002 digitally synthesized crystal con...

Page 15: ... shall bear no responsibility or obligation with respect to the manner of use of any equipment sold by it COMTEK SPECIFICALLY DISCLAIMS AND NEGATES ANY WARRANTYOF MERCHANTABILITY OR FITNESS OF THE PRODUCT FOR A PARTICULAR PURPOSE INCLUDING WITHOUT LIMITATION ANY WARRANTY THAT THE USE OF SUCH EQUIPMENT FOR ANY PURPOSE WILL COMPLY WITH APPLICABLE LAWS AND REGULATIONS Service Policy Warranty repairs ...

Page 16: ...357 West 2700 South Salt Lake City Utah 84115 Phone 800 496 3463 Fax 801 484 6906 www comtek com ...

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