Currently, the Polk County Sheriff’s Office leases airtime on the 700/800 MHz RACOM network, while the Polk County Fire Department (made of rural departments that are dispatched by PCSO) resides on conventional VHF frequencies that are then patched to the RACOM network.

The “Assistance to Firefighters” FEMA grant would allow the county to purchase roughly 116 mobile radios, along with 217 handhelds. A decision on the grant is expected by late May. Polk County would have one year to formalize the purchase and that would allow the county to select a new radio system.

Without the text of the grant application, it is unclear whether Polk County Fire would directly join the RACOM network or create a new standalone interoperable system, although reports surfaced earlier this year of a request for proposals (RFP) for a new, leased countywide P25 fire radio system. Westcom and Des Moines will have the option to join the project.

Ankeny Fire was selected to file the proposal, as Polk County was not allowed to apply for the FEMA grant. If the grant is approved, Ankeny, Polk City, Elkhart, Saylor and Delaware townships, Altoona, Bondurant, Granger, Grimes, Johnston, Mitchellville, Pleasant Hill, Runnells and Windsor Heights would benefit from the grant.

I’m becoming increasingly interested in learning about the MotoTRBO platform, particularly its use in the amateur radio band (although the nearest amateur MotoTRBO system for me is located about two hours away in Mount Pleasant, Iowa). While searching for YouTube videos demonstrating its capabilities versus other digital platforms, I came across a video about Racing Radios, a company that specializes in supplying radios to track personnel, media, vendors, security, track fire/rescue, and several race teams.

Certainly, I’m no NASCAR fan — but it was pretty neat to hear about MotoTRBO’s success in such an RF-intense environment at a large-scale event like the Talladega 500. Seeing that bank of MotoTRBO radios in the trailer is enough to make my eyes water!

Already there’s a thread over at RadioReference with a pretty decent chunk of talkgroups figured out. If you’ve been listening to the system, collaborate and share your notes with others. Talkgroups can be figured out by running Unitrunker or by just listening.

If you’re interested, Johnson County EMA will be holding an open house of the JECC on June 19th from 1 to 3 p.m. The JECC is located at 4529 Melrose Avenue in Iowa City. More information can be found on this PDF flier.

The presentation covers the use of the Big Three — Facebook, Twitter, and YouTube — plus the new myARRL and homebrewed social networking sites that can benefit amateur radio by connecting amateur radio operators together and expose non-licensees to our hobby. Other new online technologies related to amateur radio are discussed in the presentation.

Some of the websites mentioned have been discussed on this weblog before, and other websites will also be discussed on this weblog at a later time.

If you missed the presentation, you can download the presentation in the following formats:

• PPT PowerPoint format (10 megabytes, in a ZIP file)
• PDF Adobe Reader format (42 megabytes)

The websites that were featured in the presentation (plus some bonus websites) are listed below:

• Des Moines Radio Amateurs’ Association
• Amateur Radio Technical Society
• Mid-Iowa Skywarn Association
• Facebook
  • Iowa ARES
  • ARRL
• Twitter
  • DMRAA
  • Mid-Iowa Skywarn
  • Hashtag search for #hamr or #hamradio
  • KC0ZMX’s APRS-to-Twitter gateway
• YouTube
• ARRL
  • How to navigate the new ARRL website
  • myARRL profile management (must be logged in)
• 73s.org
• Ham Radio Nation
• The Practical Amateur Radio Podcast
• This Week in Amateur Radio Podcast
• QRZ
• Google Maps APRS
• K6IB 3D APRS
• K5EHX Repeater Mapping
• callbyTXT
• RadioReference
• DX Clusters
  • DX Watch
  • eHam
  • QRZ
  • ham-radio.ch
  • F5LEN
  • DXFUN
  • 2-meter propagation
• Reverse Beacon Network

The presentation will cover the use of the Big Three — Facebook, Twitter, and YouTube — plus the new myARRL and homebrewed social networking sites that can benefit amateur radio by connecting amateur radio operators together and expose non-licensees to our hobby. Other new online technologies related to amateur radio will be discussed.

Executive board members will also be elected at the meeting. Friend and mentor George, KK7FM, has been nominated for president, and I have again been nominated for re-election as vice president.

You do not need to be a member to attend the meeting, but if you are a new ham (within the last year), your first year of membership is completely free.

The meeting begins at 7 p.m. in the Waveland Room of Plymouth Congregational Church, located at 42nd and Ingersoll in Des Moines. We have plenty of room, so bring a friend!

KAIT-TV 8 in Jonesboro, Arkansas, filed a rudimentary report about the proliferation of applications to listen to online police scanners via cell phone. One officer in the video said in a sound bite that it was “alarming” and a “high concern” that such scanner apps exist.

Indeed, these apps do make the radio waves more accessible for everyone — not just criminals. The low cost of these apps — sometimes free — makes police radio broadcasts more accessible than in the days of walking into your local Radio Shack and picking up a handheld scanner for a hundred bucks and get help from the store clerks on how to program it.

What KAIT-TV failed to mention is that most, if not all, of the radio streams for cell phone apps are provided through agreements with RadioReference, who had established strict policies for feed providers when RadioReference acquired ScanAmerica to somewhat limit aid for criminals in the commission of a crime. The policies state that the following is not allowed to be broadcast: “SWAT type operations if on dedicated channels or talkgroups” and “Narcotics / CID / Investigations or other tactical operations”

Seems to me that if you don’t want to be heard on the scanner apps, then switch over to the tactical frequency. Moreover, the same police officer that expressed concerns in the video’s opening also expressed concern over, for example, a criminal listening to the scanner app would be able to know when to get out of the area and if the police were setting up a perimeter. But really, wouldn’t sirens and flashy lights give it away? It doesn’t take a genius to be observant. And it seems simple enough that you could look out the window and be able to see if the police are setting up a perimeter. If you’re setting up a perimeter, then you should already be moved off the dispatch channel and on to a tactical channel.

What KAIT-TV also failed to show are those departments that believe scanner listeners can be an asset to their crime prevention and neighborhood watch objectives. While criminals using scanners can create bad relationships between police departments and law-abiding scanner hobbyists, there are other departments who enjoy mutual relationships with scanner hobbyists.

In fact, RadioReference has actually partnered with some public safety agencies to provide “official feeds” — feeds that are supported and provided by the agencies themselves. Just ask a senior officer how many times they have found a scanner being used in the commission of a crime and you’ll find the whole truth about how rare it is.

The feeds could be broadcast on a time delay of maybe 30 minutes to an hour to avoid aiding in the commission of a crime. But I believe a widespread time delay like that wouldn’t be implemented unless a law is enacted to require it.

Only in very few instances would a feed otherwise be delayed, such as in 2008 when the FBI and Minnesota law enforcement requested RadioReference to delay the feeds by 30 minutes for the Republican National Convention in Minneapolis.

So, the Cliff’s notes: not all scanner listeners are criminals, not all police hate scanner listeners, and there are safeguards in place on online radio feeds to limit the abuse of the feeds by criminals.

VORTEX2 is by far the largest and most ambitious effort ever made to understand tornadoes. We expect over 100 scientists and over 40 science and support vehicles to participate in this unique, fully nomadic, field program during its second and last field season, May/June 2010. The National Science Foundation (NSF) foundation and the National Oceanic and Atmospheric Administration (NOAA) are contributing over $10 million towards this effort. Participants will again be drawn from over a dozen universities, and several government and private organizations. International participants will be drawn from Italy, Netherlands, United Kingdom, Germany, Canada and Australia.

The playground for the VORTEX2 project is a wide swath of the central United States, reaching from northern Texas, to northern South Dakota, and over into central Iowa. For the next month and a half, the armada of VORTEX2 mobile labs, trucks, cars, and Doppler on Wheels (DOW) vehicles will be roaming this area to gain a better understanding of how tornadoes form.

If you enjoy listening to storm reports on DMX MICRN or over Skywarn frequencies, then you’ll enjoy listening in on the VORTEX2 frequencies. The organizers of the project felt comfortable enough to be open with the public to publish the project’s operating manual online, which includes the frequency plan for the project. This doesn’t mean it’s ok to interfere with their project in any way, shape, or form. Period.

Because most of these frequencies are simplex (not using a repeater), you’ll probably need to be within a decent range to hear them. The only channel that will be utilized by a repeater is NSSL 2 (165.4375) and that channel will be used to coordinate vehicles.

National Severe Storms Laboratory (NSSL)
163.1000 – NSSL 1 (Simplex)
165.4375 – NSSL 2 (Duplex)
161.1000 – NSSL 3 (Simplex)

Center for Severe Weather Research (CSWR)/Doppler on Wheels (DOW)
161.5000 – Radar Team Coordination 1
161.4000 – Radar Team Coordination 2
151.9400 – DOW/Telemetry 1
151.8200 – DOW/Telemetry 2
158.4000 – CSWR/DOW

Research teams
161.3000 – Tornado Pod teams 1 – used for DOW to Tornado Intercept Vehicle (TIV) communications
161.2000 – Tornado Pod teams 2
151.7000 – Mobile Mesonet teams 1
151.7600 – Mobile Mesonet teams 2
161.0000 – StickNet teams 1
160.9000 – StickNet teams 2
160.8500 – Unmanned Aerial Surveillance (UAS) Team
160.8000 – Weather balloon teams

I found this gem on YouTube while searching for other Skywarn videos late one night. While the premise and goals of the Skywarn program have remained unchanged, this video from nearly 40 years ago emphasizes how far the science of weather and personal computing has brought the activity.

Instead of chalkboards, meteorologists now use PowerPoint, videos, pictures, and diagrams on a projection screen to teach the general public (read: not meteorology students). Spotters in the field now have laptops, netbooks, aircards, APRS/GPS, and a whole array of wireless technology to assist them in the field and communicate back to the NWS, EOC, or to other spotters.

Since then, scientists have improved the understanding and reliability of weather forecasting. While weather is a science, humans don’t have it “down to a science” quite yet. But I wonder where we’ll be 40 more years from now?

Here’s a video I found months ago, and just now found again buried in my draft box. Most of us are familiar with the 10-codes that were designed to abbreviate radio transmissions made by emergency personnel aren’t so great after all?

In today’s quest for interoperability, 10-codes are going by the wayside to reduce confusion among different agencies that are working together on one channel during an incident, whether it’s a high-speed pursuit, or a natural or man-made disaster. 10-codes can vary greatly among departments, and the federal government has suggested to agencies that they eliminate the 10-code system altogether.

Steven Riddle, W3MOT, was released from jail on his on recognizance this week after pleading guilty to three felony charges of grand larceny of property over $1,000 and a misdemeanor charge of criminal mischief with intent to damage property, according to the New York State Unified Court System.

He is currently awaiting sentencing. His next appearance in court to receive his sentence is Thursday.