An Overview Of 220 MHz Amateur Radio Equipment And Developments In The .
An Overview of 220 MHz Amateur Radio Equipmentand Developments in the U.S. MarketNovember 21, 2015Diana Feinberg, AI6DFStaff 60 2015 Los Angeles County Disaster Communications Service
An Overview of 220 MHz Amateur Radio Equipmentand Developments in the U.S. Market1. Why so few choices in equipment until lately2. History of the 222-225 MHz band and a new threat3. Recent developments in 222-225 MHz mobile radios4. Recent developments in 222-225 MHz handheld radios 2015 Los Angeles County Disaster Communications Service
An Overview of 220 MHz Amateur Radio Equipmentand Developments in the U.S. Market1. Why so few choices in equipment until lately2. History of the 222-225 MHz band and a new threat3. Recent developments in 222-225 MHz mobile radios4. Recent developments in 222-225 MHz handheld radios 2015 Los Angeles County Disaster Communications Service
222-225 MHz amateur band historically under-utilized inthe U.S. due to lack of equipment choicesU.S. 222-225 MHz amateur band until recently had few radiochoices because no world-wide market 222-225 MHz amateur band only in Western Hemisphere Used for television broadcasting elsewhere Ireland, Channel J Video: 223.25 MHz Western Europe; most of Africa and Asia; Australia, NewZealand: Channel 11 audio: 222.75 MHz Channel 12 video: 224.25 MHz Eastern Europe: Channel 12 video: 223.75 MHz 2015 Los Angeles County Disaster Communications Service
222-225 MHz amateur band under-utilized in the U.S. dueto lack of equipment choices but that is changingMany new 222-225 MHz radios recently more expected Most new radios coming from China; several from U.S. maker Prices very reasonable but quality varies Plenty of reasons to get on the 222-225 MHz bandLACDCS has 224.300 MHz repeater on Mt. Disappointment—let’s use it 2015 Los Angeles County Disaster Communications Service
An Overview of 220 MHz Amateur Radio Equipmentand Developments in the U.S. Market1. Why so few choices in equipment until lately2. History of the 222-225 MHz band and a new threat3. Recent developments in 222-225 MHz mobile radios4. Recent developments in 222-225 MHz handheld radios 2015 Los Angeles County Disaster Communications Service
Ham radio lost its 220-222 MHz segment in 1988 due to illfated United Parcel Service radio systemSome history about the 222-225 MHz ham band 1938: Ham radio given 220-225 MHz 1970’s: Little commercial equipment to modify for use in 220-225MHz; band largely quiet 1973-1977: FCC considered and rejected 224 MHz for another“Citizens Band” 1988: United Parcel Service lobbied & got 220-222 MHz forproposed fleet and package tracking system Narrow-banded SSB voice and data network envisioned But UPS turned to cellular providers for wireless tracking UPS abandoned 220-222 MHz, FCC auctioned it to others 2015 Los Angeles County Disaster Communications Service
Amateurs need to use our 222-225 MHz band more, can’tlet spectrum sit idleSome more history about the 222-225 MHz ham band 1990: Amateur radio decided to prevent another spectrum giveback; major makers started selling 1.25-meter radios Early 2000’s: Major brands (ex-Alinco) stopped selling 222-225MHz radios 2012-2015: Lesser makers launched low-cost 222-225 MHzradios, often using non-traditional retail distribution 2014-2015: A new threat emerging from below in 220-222 MHz 2015 Los Angeles County Disaster Communications Service
A railroad signaling technology called “Positive TrainControl” now the biggest threat to 222-225 Mhz ham bandAfter some fatal train accidents, 10 frequencies across220-222 MHz assigned for Positive Train Control 2008: Chatsworth MetroLink crash with freight train started PTC PTC systems use three components with 220 MHz radios Locomotive speed control and display Bi-directional transmission of track, train speed conditions On-board navigation system with database of track speedlimits, other considerations for braking Goals: immediately warn train engineer, automaticallyactivate brakes in 15 seconds Ten existing frequencies not enough in major urban areas 2015 Los Angeles County Disaster Communications Service
A railroad signaling technology called “Positive TrainControl” now the biggest threat to 222-225 Mhz ham bandCurrently you will find Positive Train Control here:Frequency Type Tone Alpha Tag220.12750 BMPTC-1220.13250 BMPTC-2220.13750 BMPTC-3220.14250 BMPTC-4220.14750 BMPTC-5220.75250 BMPTC-6220.76750 BMPTC-7220.77250 ositive Train Control 1Positive Train Control 2Positive Train Control 3Positive Train Control 4Positive Train Control 5Positive Train Control 6Positive Train Control 7Positive Train Control 8Positive Train Control 9Positive Train Control 10 2015 Los Angeles County Disaster Communications DataDataDataDataDataDataDataData
An Overview of 220 MHz Amateur Radio Equipmentand Developments in the U.S. Market1. Why so few choices in equipment until lately2. History of the 222-225 MHz band and a new threat3. Recent developments in 222-225 MHz mobile radios4. Recent developments in 222-225 MHz handheld radios 2015 Los Angeles County Disaster Communications Service
During 2001-2010 Alinco DR-235T was about the only 220mobile transceiver sold; DCS has these in most stations Familiar radio in mostLACDCS rooms Ventura Co. disastergroups heavily use thisradio Easy to manuallyprogram Head not detachable 25 watts, 100 channels But issues with IF filterfailure, final PA easy toblow out 2015 Los Angeles County Disaster Communications Service
59 eham.net reviews 4.7 rating 2015 Los Angeles County Disaster Communications Service
The Jetstream JT-222M appeared to offer an alternative,but problems reported28 eham.net reviews 3.6 rating50 watts, 200memories, but Complaints aboutunits dying early;poorly-written manual;poor software 2015 Los Angeles County Disaster Communications Service
TYT (Hytera) then decided to enter the 220- MHz sectorthrough Amazon.com and transmit up to 260 MHz 2015 Los Angeles County Disaster Communications Service
27 eham.net reviews 4.2 rating55 watts, 200 channels 2015 Los Angeles County Disaster Communications Service
Recently some dual-band mobile radios with 222-225 MHz(and more) started appearing with detachable n/kg-uv920p-a.aspx15 eham.net reviews 3.2 ratingCan do 2m/220 cross-band;or connect two units tocreate a 220 repeater;Includes 88-108 FMbroadcast band 2015 Los Angeles County Disaster Communications Service
New tri-band dual-receive radio with 220 capability about to appear in U.S. with 758 memory channelshttp://www.wouxun.us/item.php?item id 343 2015 Los Angeles County Disaster Communications Service
TX ranges go well outside ham bands—be careful 2015 Los Angeles County Disaster Communications Service
This radio cross-bands from 220 to 440 2015 Los Angeles County Disaster Communications Service
A very promising “almost commercial-build” 220 radiosoon to -220-mhz-mobile-radio 2015 Los Angeles County Disaster Communications Service
2015 Los Angeles County Disaster Communications Service
Some commercial models are used as taxi radios in Asia
An Overview of 220 MHz Amateur Radio Equipmentand Developments in the U.S. Market1. Why so few choices in equipment until lately2. History of the 222-225 MHz band and a new threat3. Recent developments in 222-225 MHz mobile radios4. Recent developments in 222-225 MHz handheld radios 2015 Los Angeles County Disaster Communications Service
Mods to commercial radios don’t always work;what happened to our first MHz with this 217-222 radio? 2015 Los Angeles County Disaster Communications Service
BridgeCom recently introduced a promising U.S.-made220 MHz amateur repeater 2015 Los Angeles County Disaster Communications Service
5 eham.netreviews 5.0 rating30 watts,currently onlyturnkey 220repeater;Made in U.S.A. 2015 Los Angeles County Disaster Communications Service
Developments in HT radios for 222-225 MHz: Wouxun dual-band UV3-D used by many Covers 2-meters and 220 Dual receivers Only transmits in ham bands Has built in LED flashlight Voice prompts (if desired) 99; available at ham stores Make sure you get UV3D with 220; Same model # also in 2-meter/440 eham.net: 70 ratings 4.2128 channels broadcast FM 88-108 MHz, no out of band TX 2015 Los Angeles County Disaster Communications Service
Another Wouxun HT radio for 222-225 MHz: Unusual bandcombinations in this unit but only 3 watts on 220199 channels broadcast FM 88-108 MHz out of band 2015 Los Angeles County Disaster Communications Service
Even lower-cost HT radios for 222-225 MHz: Many that goout of band being sold through non-ham retail channels128 channels broadcast FM 88-108 MHz out of band 2015 Los Angeles County Disaster Communications Service
This low-power TYT does 2m/220 in a small packageEham.net rating: 12 reviews 4.3Only 2.5 watts max.,128 channels broadcast FM 88-108 MHz out of band 2015 Los Angeles County Disaster Communications Service
Developments in HT radios for 222-225 MHz: A low-costalternative to the Kenwood TH-F6A for only 66128 channels broadcast FM 88-108 MHz out of band 2015 Los Angeles County Disaster Communications Service
Very recent HT for 222-225 MHz: BridgeCom BCH-220Alternative to otherlow-cost 220 MHz HTs;199 channels;no out of band TX 2015 Los Angeles County Disaster Communications Service
In summary, choices in 220 MHz ham radios are increasing:Let’s get on the air!Credit goes to China radio makers, selling for other uses tooProduct quality of some units not very goodManuals for some not well-written, programming by hand difficultBe careful where you transmit (some go out of ham bands)Bottom line: Wider selection and low prices will lead to more220 MHz amateur operators, including in DCSWe have LACDCS 224.300 MHz repeater for DCS—let’s use itFor more info on 222-225 MHz in Southern California and list ofcoordinated repeaters, visit www.220sma.orgThanks for watching. 2015 Los Angeles County Disaster Communications Service
and Developments in the U.S. Market 1. Why so few choices in equipment until lately 2. History of the 222-225 MHz band and a new threat 3. Recent developments in 222-225 MHz mobile radios 4. Recent developments in 222-225 MHz handheld radios
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