9
Technical Specifications and FCC Regulations
Transmitter
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Frequency agile with front-panel select-ability; frequency range: 520 to 1700 kHz.
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Automatic Tuning: internal automatic servo-operated tuning circuit for range maximization (U.S. Patent No.
6,295,443).
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Audio Inputs: internal microphone plus external mic (mono) and line-level (stereo) inputs (on 1/8” “mini phone”
connector-line-level sensitivity .1 to .5 volts).
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Audio Processing: built in automatic audio limiter / compressor.
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Message Storage: digital voice record/playback solid state memory chip, 5 minutes max.
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Message Length: variable depending upon model of transmitter (see sticker on unit back panel).
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Microphone: built-in or hand-held.
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Size: 8” x 14” x 2.5” (shipping size boxed - 12” x 20” x 6”).
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Weight: 4 lbs. (shipping weight - 7 lbs).
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Indoor Antenna: black, rubberized wire, approximately 8’ in length.
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Power: 110/120VAC via included 18VDC 100mA external transformer / grounded AC plug adapter.
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RF Output Power: 100 mW average.
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Frequency Control: crystal-controlled phase locked loop tuner.
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Frequency Stability: - +/- 30 Hz.
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Range: typically 300-3000 feet (dependent on conditions and use of outdoor range extender).
Applicable FCC and Licence Regulations - FCCID: DLB5LTT98
This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: 1.) This device may not
cause harmful interference, and 2.) this device must accept any interference received, including interference that may cause
undesired operation.
FCC Part 15 Rules, Section 15.219 - Operation in Band 510–1705 kHz
(a) The total input power to the final radio frequency stage (exclusive of filament or heater power) shall not exceed 100
milliwatts.
(b) The total length of the transmission line, antenna and ground lead (if used) shall not exceed 3 meters.
(c) All emissions below 510 kHz or above 1705 kHz shall be attenuated at least 20 dB below the level of the unmodulated
carrier. Determination of compliance with the 20 dB attenuation specification may be based on measurements at the
intentional radiator’s antenna output terminal unless the intentional radiator uses a permanently attached antenna, in which
case compliance shall be demonstrated by measuring the radiated emissions.
