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Technical Specifications and FCC Regulations

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Model 5.0 i.AM. - AM Radio Transmitter

• Frequency Agile with front-panel selectability - frequency range: 520 to 1700 kHz
• Automatic Tuning – internal automatic servo-operated tuning circuit for range maximization  

(U.S. Patent No. 6,295,443)

• Audio Inputs – internal microphone plus externa mic (mono) and line level (stereo) inputs  

(on 1/8” “mini phone” connector-line level sensitivity .1 to .5 volts

• Audio Processing: built in automatic audio limitor / compressor
• Message Storage: digital voice record/playback solid state memory chip, 5 minutes max.
• Message Length: variable depending upon model of transmitter (see sticker on unit back panel)
• Microphone: built-in or hand-held
• Size: 8” x 14” x 2.5” (shipping size boxed - 12” x 20” x 6”)
• Weight: 4 lbs. (shipping weight - 7 lbs)
• Indoor Antenna:  black, rubberized wire, approximately 8’ in length
• Power: 110/120VAC via included 18VDC 100mA external transformer / grounded AC plug adapter
• RF output power: 100 mW average
• Frequency Control: Crystal controlled phase locked loop tuner
• Frequency Stability: - +/- 30 Hz
• Range: typically 300-3000 feet (dependent on conditions and use of outdoor range extender

Model ATU – Outdoor tuning Unit / Range Extender

• Input Power: .01 mW to 1 watt
• Frequency Range: 520 to 1700 kHz
• Connectors: “F” type input,  3/8”-24 threaded antenna coupling, grounding post with knurled knob
• Radiator: 9’ fiberglass whip antenna (included)
• Internal controls: frequency range switch, tuning knob
• Internal indicator: signal strength meter
• Size: 5” x 7” x 3” (shipping size boxed - 6” x 8.5” x 4”)
• Weight: 1.5 lbs. (shipping weight - 2 lbs)
• Mounting: mounts to any metal pipe from 1/2” to 1 3/4” diameter (mounting brackets included,  

pipe not included

• US Patent Number US 7, 437,130 B2

Applicable FCC and Licence Regulations - FCCID: DLB5LTT98

This device complies with Part 15 of the 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.

The model ATU Outdoor Manual Antenna Tuning unit is FCC accepted within this certification as serving as 
the final output stage.

FCC part 15 rules, Section 15.219 Operation in the 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.

Summary of Contents for i.AM.Radio Transmitter

Page 1: ...i AM Radio Transmitter Installation and Operation Easy to follow instructions on how to program and use your Model 5 0 i AM Radio Transmitter...

Page 2: ...hone 8 Broadcast Live from a Studio or External Recorded Message 8 Broadcast a prerecorded message from the internal Message Chip storage 8 Record Procedure in detail 9 Recording a message onto the in...

Page 3: ...rned off when using the mic to avoid feedback 5Next plug the power transformer into a grounded wall outlet and then plug the power cord into the CUSTOM POWER input jack located on the back of the Tran...

Page 4: ...the Front Panel until you see the countdown begin on the Front Display Then release the button and begin recording your message by speaking clearly into the internal mic under the top perforated gril...

Page 5: ...h to Start Playback of Recorded Message Insert key to allow message record or frequency change AM frequency readout Connect indoor antenna here uncoil and stretch out fully along a wall or window sill...

Page 6: ...as on one channel above and one channel below It is advisable to make this listening test at dusk when radio reception is at best Use the front panel raise and lower controls to set this frequency Not...

Page 7: ...he Tuning Knob on the ATU until the needle on the Output Meter peaks at its highest number Leave the knob set for this highest meter reading 5 Close the cover on the ATU box and seal with a silicone s...

Page 8: ...l from distorting but it is still best to maintain the incoming signal level at a consistent volume for best sound quality Note that when recording or broadcasting a LINE INPUT the built in speaker ca...

Page 9: ...he Pause Button to end a recording 5 When your message is complete wait a second or two then press and hold the Play button located on the front of the Transmitter until you see the frequency re displ...

Page 10: ...ator 9 fiberglass whip antenna included Internal controls frequency range switch tuning knob Internal indicator signal strength meter Size 5 x 7 x 3 shipping size boxed 6 x 8 5 x 4 Weight 1 5 lbs ship...

Page 11: ......

Page 12: ...A Division of Radio Systems Inc Radio Systems Inc 601 Heron Drive Logan Township NJ 08085 Phone 856 467 8000 Fax 856 467 3044 Email sales radiosystems com www radiosystems com...

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