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15

Frequency Agile UHF Belt-Pack Transmitter

Rio Rancho, NM – USA

SPECIFICATIONS AND FEATURES

Operating frequencies:

537.600 to 588.700 MHz
614.400 to 793.500 MHz

Frequency selection:

256 frequencies in 100kHz steps

RF Power output:

70 mW (nominal)

Pilot tone:

32.764 kHz (± 2Hz); 5kHz deviation

Frequency stability:

± 0.002%

Deviation:

± 75 kHz (max)

Spurious radiation:

90 dB below carrier

Equivalent input noise:

–126 dBV

Input level:

Nominal 2 mV to 300 mV, before limiting.
Greater than 50V maximum, with limiting.

Input impedance:

Taps provided for 500, 1k, 10k Ohm

Input compressor:

Soft compressor, >30 dB range

Gain control range:

43 dB; semi-log rotary control

Modulation indicators:

Dual LEDs indicate modulation level 12dB below
limiting and at the onset of limiting.

Low frequency roll-off
adjustment:

–18dB/octave; 35Hz to 150Hz

Controls:

2 position “OFF-ON” slide switch for noiseless turn on/turn off operation.
Front panel knob adjusts audio gain.  Recessed control on side panel adjusts low
frequency rolloff.  Rotary switches on side panel adjust transmitter frequency.

Audio Input Jack:

Switchcraft 5 pin locking (TA5F)

Antenna:

Detachable, flexible wire supplied.  50 Ohm port allows
connection to test equipment.

Battery:

Precision compartment auto-adjusts to accept any known alkaline 9 Volt battery.
(We’ve tried 125 different ones!)

Battery Life:

4.5 hours (alkaline); 14 hours (lithium)

Weight:

6.3 ozs. including battery

Dimensions:

3.1 x 2.4 x .75 inches

Emission Designator:

  180KF3E

Specifications subject to change without notice.

Содержание UM200B

Страница 1: ...UM200B FREQUENCY AGILE UHF BELT PACK TRANSMITTER LECTROSONICS INC Rio Rancho NM OPERATING INSTRUCTIONS and trouble shooting guide...

Страница 2: ...SCRIPTION 4 CONTROLS AND FUNCTIONS 6 BATTERY INSTALLATION 8 OPERATING INSTRUCTIONS 8 OPERATING NOTES 9 ADJUSTING THE TRANSMITTER FREQUENCY 9 MICROPHONE CORD TERMINATION 10 5 PIN INPUT JACK WIRING 11 A...

Страница 3: ...y roll off is user adjustable to adapt to varying acoustic environments and preferences The UM200B is a rugged machined aluminum package with a removable spring loaded belt clip The input section prov...

Страница 4: ...ncy audio distortion will be low but high frequency transients will then be distorted The 200 system intro duces an entirely new approach to solving this basic problem called dual band companding Ther...

Страница 5: ...tor in the receiver so that it does not influence the compandor or various gain stages The basic benefit of the pilot tone squelch system is that the receiver will remain muted until it receives the p...

Страница 6: ...battery should be replaced The ON lamp is connected to a precision battery test circuit that continuously monitors battery voltage The LED is at full brightness with a new 9 Volt alkaline battery As t...

Страница 7: ...requency range of the transmitter It is removable via an SMA connector The SMA connector is a 50 Ohm RF port which can also be connected directly to test equipment Replacement antennas are available i...

Страница 8: ...arrow as shown in the drawing Only firm sliding pressure is needed to open and close the battery door Swing the door open and take note of the polarity marked inside showing the location of the posit...

Страница 9: ...ow full deviation The 0 LED turns on at full deviation and indicates that the input shunt compressor is operating The input limiter will handle peaks over 30dB above full modulation regardless of the...

Страница 10: ...tructions Caution Do not allow the shield wire to touch any metal part of the connector shell The shield wire is the antenna on VHF models and poor operating range will result Shield Wire Crimp Tabs R...

Страница 11: ...all a chip capacitor in the mic capsule or connector to block the RF from entering the electret capsule This modification is shown on the next page VHF transmitters use the shield of the microphone co...

Страница 12: ...The normal hookup for line level signals is Signal Hot to pin 5 Signal Gnd to pin 1 pin 4 jumped to pin 1 and pin 3 jumped to pin 1 This gives a 40dB attenuator that allows signal levels much higher t...

Страница 13: ...NA BLOCK RANGE COLOR WHIP LENGTH 21 537 600 563 100 Brown 4 74 22 563 200 588 700 Red 4 48 23 588 800 614 300 Orange 4 24 24 614 400 639 900 Yellow 4 01 25 640 000 665 500 Green 3 81 26 665 600 691 10...

Страница 14: ...et too low 2 Receiver output is disconnected cable is defective or mis wired 3 Sound system or recorder input is turned down DISTORTED SOUND 1 Transmitter gain audio level is far too high Check mod le...

Страница 15: ...ators DualLEDsindicatemodulationlevel12dBbelow limiting and at the onset of limiting Lowfrequencyroll off adjustment 18dB octave 35Hzto150Hz Controls 2 position OFF ON slide switch for noiseless turn...

Страница 16: ...quotation We will be happy to quote approximate charges by phone for out of warranty repairs RETURNING UNITS FOR REPAIR You will save yourself time and trouble if you will follow the steps below A DO...

Страница 17: ...17 Frequency Agile UHF Belt PackTransmitter Rio Rancho NM USA This page intentionally blank...

Страница 18: ...velop we will at our option repair or replace any defective parts without charge for either parts or labor If we cannot correct the defect in your equipment we will replace it at no charge with a simi...

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