W5SLA Ozone Amateur Radio Club - QRM

Transcription

1 W5SLA Ozone Amateur Radio Club - QRM April Volume 2018 No. 4 1

2 SAFETY FIRST! There are entire pages dedicated to the safety topic of RF Exposure both at the ARRL and FCC s websites. Check it out! 2

3 Protocol Changes Are Coming! Thanks for the heads up AA5UY 3

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5 2018 ARRL Field Day is June Ham Radio s Open House 5

6 Meeting Highlights 6

7 Thanks for the notification KG5CEN 7

8 For The Record Point In Time Conditions 8

9 From the Desk of KF5PQ 9

10 Upcoming HAM Fests 10

11 97.17 Application for new license grant. 11

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13 2 Meters Repeaters MHz (+) CTCSS MHz (-) Limited Range (Digital) 70 Centimeters Repeater MHz (+) D-STAR, DMR, C4FM (+) Limited Range (FM) 2 Meters Packet MHz W5SLA-4 Digi-peater (SIL) W5SLA-3 Mailbox W5SLA-5 NWS-TNC St. Tammany ARES Net Every Tuesday at 8:00 pm on the W5SLA 2 meter repeater 2 Meters Club Net Every Friday at 7:30 pm on the 2 meter repeater 10 Meters Club Net Every Friday at 8:00 pm on Or about MHz USB 75 Meter Club Net Every Friday 8:30 pm On or about MHz USB Some of your OARC Facilities 13

14 KG5NXY As you may recall, backscatter is a powerless means of radio communications that measures changes in the ambient RF environment, and where shorting out antennas make them reflect more background signal, to send information. This is a extremely rapid area of development, that only been around for a year or so. Well here is a chip so small, it is injectable in the body, where it measures alcohol, ph and signal strength! 14

15 Raising Solid Signals w/ Good Engineering Design 15

16 KG5 Radio Lawn Mower Generator Build 16

17 KE5QKR DELTA LOOP Check out my 2 part series on Amateurlogic.tv 17

18 This past Tuesday, SELARC members were treated to a visit from LA ARRL Section Manager, John Mark Robertson (K5JMR), LA ARRL Assistant Section Manager, Mike McCrary (WB5LJQ), and LA ARES Section Emergency Coordinator, Jim Coleman (AI5B). K5JMR presented a certificate of merit to Matt Anderson (KD5KNZ) for his contributions to ham radio within the state of Louisiana. Certificates were also presented to WB5LJQ and AI5B officially designated them as ASM and SEC respectively. K5JMR led a discussion introducing himself for those who he had not yet met and also discussed his philosophy on leadership for the section. AI5B followed with an overview of a presentation that he plans to present as he tours the state promoting ARES. 18

19 Do you understand the relationship of Long Waves, Medium Waves Short Waves, ultra-short waves labels to frequency wavelengths? Let s start with definitions; In contemporary usage, the term longwave is not defined precisely, and its intended meaning varies. It may be used for radio wavelengths longer than 1,000 m [2] i.e. frequencies [3] up to 300 kilohertz (khz), [4][5] including the International Telecommunications Union's (ITU's) low frequency (LF, khz) and very low frequency (VLF, 3 30 khz) bands. Sometimes the upper limit is taken to be higher than 300 khz, but not above the start of the medium wave broadcast band at 525 khz. [6] Medium wave (MW) is the part of the medium frequency (MF) radio band used mainly for AM radio broadcasting. For Europe the MW band ranges from khz to khz, [1] using channels spaced every 9 khz, and in North America an extended MW broadcast band ranges from 525 khz to 1705 khz, [2] using 10 khz spaced channels. Shortwave radio is radio transmission using shortwave radio frequencies. There is no official definition of the band, but the range always includes all of the high frequency band (HF), and generally extends from MHz ( m); from the high end of the medium frequency band (MF) just above the mediumwave AM broadcast band, to the end of the HF band. They continue to go up in frequency and down in wave length from there; i.e. VHF, UHF, Microwave The relationship is: Modern and Local Examples; 60Khz CW PWM-ASK (WWVB) 1 wavelength would physically be 4998 meters (16400 feet) long 870Khz AM (WWL-AM) 1 wavelength would physically be 345 meters (1132 feet) long 105.3Mhz FM (WWL-FM) 1 wavelength would physically be 2.85 meters (9.3 feet) long Mhz FM (W5SLA VFH Repeater) 1 wavelength would physically be 2 meters (6.7 feet) long 2.412Ghz OFDM (Wi-Fi g AP) 1 wavelength would physically be.12 meters (.4 feet) long 19

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21 SEVEN, THREE [Amateur Radio] "plays a vital public safety communications service...[with]...tremendous potential...when all other forms of radio communication fail, especially during emergencies." The Hon. Greg Walden Member, U.S. Congress DE W5SLA SK SK.. 21