Introduction to Amateur Radio

Transcription

1 Introduction to mateur Radio ric Hansen, KB1VUN mateur Radio is a licensed service You must have a license Three license categories, different privileges Licenses are issued by the FCC, exams are administered by volunteers Multiple-choice exam questions cover theory, rules, and operating practices mateur radio is a public service mergency communication when normal infrastructure is broken Communication for other events, e.g., The Prouty But emergencies are rare, everything else is direct or indirect practice Largely self-policing, but FCC will prosecute abusers 1

2 Ham radio vs other services you may know about Commercial broadcast radio M: khz, 10 khz channels, 50 kw limit, licensed FM: MHz, 200 khz channels, 100 kw limit, licensed Citizens Band: MHz, 40 channels, 4-12 W (depending on mode), no license Family Radio Service (walkie-talkies): 462 & 467 MHz, 14 channels, 500 mw, no license mateur radio is licensed, two-way (no broadcasting), up to 1.5 kw (mostly), variety of frequency bands. Must be unencrypted, noncommercial, no music. lso supposed to be non-profane and nonpolitical, but Operating modes nalog (speech) M (nearly obsolete) Single sideband (SSB, better version of M) FM Digital Morse code (CW) Radioteletype (RTTY) More advanced digital modes, including digital voice lthough digital data is coded, it is not encrypted. nyone with the right equipment can listen in. 2

3 7/26/12 160m 80m 40m 30m 20m 17m 15m 12m 10m HF 6m 2m 1.25m VHF 70cm 33cm 23cm UHF US mateur Radio Bands Published by: ffective Date May 6, 2008 US MTUR POWR LIMITS t all times, transmitter power should be kept down to that necessary to carry out the desired communications. Power is rated in watts PP output. xcept where noted, the maximum power output is 1500 Watts. 160 Meters (1.8 MHz) 30 Meters (10.1 MHz) void interference to radiolocation operations from to MHz void interference to fixed services outside the US. 200 Watts PP MHz MHz (50 W ) MHz Phone and Image modes are permitted between and MHz for FCC licensed stations in ITU Regions 1 and 3 and by FCC licensed stations in ITU Region 2 West of 130 degrees West longitude or South of 20 degrees North latitude. See Sections (c) and (f)(11). Novice and Technician licensees outside ITU Region 2 may use CW only between and MHz and between and MHz to MHz is not available outside ITU Region 2. See Section (e). These exemptions do not apply to stations in the continental US MHz,T N (25 W ) MHz MHz *eographical and power restrictions may apply to all bands above 420 MHz. See The RRL Operating Manual for information about your area. 70 cm (420 MHz) * 15 Meters (21 MHz) MHz ,T MHz MHz ,T N (5 W ) MHz mateur radio bands = SSB phone = USB phone only = Fixed digital message forwarding systems only = mateur xtra = dvanced = eneral T = Technician N = Novice MHz 23 cm (1240 MHz) * MHz 10 Meters (28 MHz) = phone and image = CW only,t Test transmissions are authorized above 51 MHz, except for MHz See RRLWeb at for detailed band plans. 33 cm (902 MHz) * Meters (24 MHz) KY CW operation is permitted throughout all amateur bands except 60 meters. = RTTY and data 1.25 Meters (222 MHz) khz 40 Meters (7 MHz) 7.125,T 17 Meters (18 MHz) eneral, dvanced, and mateur xtra licensees may use the following five channels on a secondary basis with a maximum effective radiated power of 50 W PP relative to a half wave dipole. Only upper sideband suppressed carrier voice transmissions may be used. The frequencies are , , , and khz. The occupied bandwidth is limited to 2.8 khz centered on 5332, 5348, 5368, 5373, and 5405 khz respectively Note: MCW is authorized above 50.1 MHz, except for MHz. 2 Meters (144 MHz) MHz Meters (5.3 MHz) USB only 2.8 khz ,T 54.0 MHz Meters (14 MHz) 80 Meters (3.5 MHz) Meters (50 MHz) MHz Main Street, Newington, CT US ll licensees except Novices are authorized all modes on the following frequencies: MHz Hz Hz MHz Hz Hz MHz Hz Hz MHz Hz ll above 275 Hz RRL Headquarters: (Fax ) hq@arrl.org Publication Orders: Toll-Free ( ) orders@arrl.org Membership/Circulation Desk: Toll-Free ( ) membership@arrl.org etting Started in mateur Radio: Toll-Free ( ) newham@arrl.org xams: vec@arrl.org Copyright RRL 2007 rev. 4/21/2010 3

4 mateur Radio in Practice Local amateur radio 2m and 70cm FM voice and data Line of sight, range extended by repeaters: one inbound frequency, one outbound frequency Distant amateur radio HF and 6m (occasionally higher), skywave / ionosphere Contests, DX, rag chewing xperimental amateur radio UHF, microwave, earth-moon-earth, etc. What does W1T have? Icom IC-736 HF / 6m all-mode transceiver Yaesu FT-847 HF / 6m / 2m / 430 MHz all-mode transceiver Two VHF all-mode transceivers Three VHF / UHF FM transceivers (for local communications) HF and VHF antennas Currently, no shack space plan to operate portable through the summer, then make longer-range plans in the fall. 4

5 Upcoming exam sessions Find an exam near you: xam fee is $15. If you pass, you may take the next exam on the spot, for no additional charge. 5