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Broadband over Power Line ARRL Statement

Broadband over Power Line ARRL Statement. Paul L Rinaldo Chief Technology Officer American Radio Relay League Tel: 703 934 2077, Fax: 703 934 2079 E-mail: prinaldo@arrl.org. Who is ARRL?. Represents 160,000 members, licensed amateur radio operators mostly in USA

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Broadband over Power Line ARRL Statement

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  1. Broadband over Power Line ARRL Statement Paul L Rinaldo Chief Technology Officer American Radio Relay League Tel: 703 934 2077, Fax: 703 934 2079 E-mail: prinaldo@arrl.org

  2. Who is ARRL? • Represents 160,000 members, licensed amateur radio operators mostly in USA • ARRL is a member society of the International Amateur Radio Union (IARU) which represents 2.6 M amateur radio operators • ARRL, IARU active in ITU-R SG 1 studies. ARRL-IEEE

  3. ARRL on Broadband • ARRL endorses “universal, affordable access to broadband technology.” • BPL has the potential of interfering with radio services, particularly amateur radio • Interference has occurred, complaints filed with FCC, have resulted in shut down of systems (e.g. Cedar Rapids, IA) ARRL-IEEE

  4. FCC ET Docket No. 04-37 • On Feb 23, FCC released Notice of Proposed Rule Making on BPL. • NPRM would permit BPL at Part 15 emission levels for intended emitters, e.g., 30 μV/m measured at 30 m distance. Proposes inadequate mitigation procedures. ARRL-IEEE

  5. NTIA Report 04-413 • NTIA report of April 27 addresses potential interference to federal assignments • For low/moderate signals (which describes amateur radio), interference extends to: • 75 m to land vehicles, 100 m to boats • 460 m to fixed stations • Aircraft 6 km altitude within 40 km of center of a BPL area. • ARRL tests are consistent with NTIA’s. ARRL-IEEE

  6. NTIA Lists Protected Frequencies 2173.5-2190.5 kHz 2495-2505 2850-3026 3400-3500 4125-4128 4177.25-4177.75 4207.25-4207.75 4650-4700 4995-5005 5450-5683 6215-6218 6267.75-6268.25 6311.75-6312.25 kHz 6525-6685 8291-8294 8361-8367 8376.25-8386.75 8414.25-8414.75 8815-8965 9995-10100 11275-11400 12290-12293 12519.75-12520.25 12576.75-12577.25 13260-13410 kHz 14990-15010 16420-16423 16694.75-16695.25 16804.25-16804.75 17900-17970 19990-20010 21924-22000 25500-25670 37.5-38.25 MHz 73-74.6 74.8-75.2 ARRL-IEEE

  7. ARRL Comments • FCC’s mitigation provisions are insufficient • BPL signals raised noise level >20 dB over ambient • Notching helps but insufficient • Separate tests showed that amateur radio signals will disrupt BPL. ARRL-IEEE

  8. ARRL: 0 dBµV/m at 10 m Acceptable Our requirement Frequency (MHz) ARRL-IEEE

  9. Amateur Bands Needing Protection • First responders use the band: 30-50 MHz • CB, in residences and vehicles use the band: • 26960-27230 kHz • Broadcast listeners would receive interference as they are also in residential areas. • 5950-6200 kHz 13600-13800 25670-26100 • 7300-7350 15100-15600 54-72 MHz (TV) • 9500-9900 17550-17900 76-88 (TV) • 11650-12050 21450-21850 • Add the NTIA list of protected frequencies and there is not much spectrum at 1.8-80 MHz left for BPL. 1800-2000 kHz 3500-4000 5330-5407 7000-7300 10100-10150 14000-14350 18068-18168 21000-21450 24890-24990 28000-29700 50-54 MHz ARRL-IEEE

  10. ITU Radio Regulations • 4.11 Member States recognize that among frequencies which have long-distance propagation characteristics, those in the bands between 5 and 30 MHz are particularly useful for long-distance communications; they agree to make every possible effort to reserve these bands for such communications… • 15.12Administrations shall take all practicable and necessary steps to ensure that the operation of electrical apparatus or installations of any kind, including power and telecommunication distribution networks, but excluding ISM, does not cause harmful interference to a radiocommunication service… ARRL-IEEE

  11. Conclusion • Unless BPL emissions reduced to 0 dBµV/m at 10 m, amateur radio would receive harmful interference. ARRL-IEEE

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