1. Audio FM Link Blue Team Justin Cobbett Elizabeth Cullinan Usman Hashmi Matthew Peck Joshua Smith

2. Audio FM Link (AFeL) What is it? – PC-Controlled FM broadcasting unit. What does it do? – Allows user to transmit digital audio from their home PC to any home FM band receivers. Who could use the AFeL? – Anyone who wants more flexibility in listening to their PC audio files (e.g. MP3’s, RealAudio)

3. System Sketch

4. AFeL Features Contains transmitter to broadcast FM signal Contains receiver to scan for an available frequency PC connections – USB port – Audio cable PC software for broadcast control Audio playback via existing audio software (e.g. WinAmp, RealPlayer)

5. Block Diagram

6. System Hardware Ramsey Electronics FM-10 Transmitter Kit Phillips TDA7000 FM Radio Circuit Microchip PIC 16C745 EMI Shielded Case

7. FM-10 Transmitter Kit

8. FM Radio Circuit

9. PIC Microcontroller PIC 16C745 – Offers built-in USB support – Inexpensive – Easy project development – Multifunctional

10. Software Visual User Interface – Visual Basic Functionality – Automatic Scan – Manual Scan – Frequency Display

11. Welcome Screen

12. Input Frequency Window

13. Error Message

14. AFeL Control Window

15. Specifications Nominal transmission range of 100 ft. radius. – 31415 ft 2 transmission area Able to transmit on licensed FM (88.1-107.9). Uses standard electric outlet. Weight limit of 2lbs. Size limit of 8”L x 8”W x 2”H. Software compatibility with Windows 95/98. USB interface between PC and AFeL unit. Audio signal from sound card.

16. FCC Regulations Maximum output of 100 mW for non- licensed FM transmitters Maximum range of ¼ mile Case must provide shielding to block EMI

17. Deliverables 1. The AFeL Unit 2. 6 foot USB cable 3. 6 foot audio cable 4. 12 volt regulated AC wall transformer 5. Disc containing software 6. Complete User Manual 7. Complete Service Manual

18. Project Budget 1. Power Supply $15.00 2. Transmitter Kit $35.00 3. PIC chip $10.00 4. Receiver Chip $ 5.00 5. USB cable $ 4.00 6. Audio Cable $ 5.00 7. Casing Material $15.00 8. Other electronic components $20.00 9. Miscellaneous $10.00 TOTAL $119.00

19. Questions