At the July meeting, CMSARA hosted our neighbor to the north, Glen Popiel KW5GP by Skype. Glen is the author of the recently published book High Speed Multimedia for Amateur Radio: Build a High Speed Amateur Radio Microwave Network (ARRL). Glen gave CMSARA members a jump-start for their MESH Tech Team, led by Rusty Yates KG5FSA. His book is available from the ARRL or from Amazon.
Few hams in the U.S. know more about high-speed multimedia modes than KW5GP: he wrote the book on it! His engaging style and witty sense of humor kept the crowd highly engaged throughout his talk. Glen shared his slides used in his presentation below. Unfortunately, due to a change in computer systems, the planned recording of KW5GP’s talk failed. However, he will be appearing in late August on the Amateur Radio Roundtable (w5kub.com) show, co-hosted by Tom Medlin (W5KUB) and CMSARA VP-Programming Frank Howell (K4FMH) using the same talk. We will add the Youtube link to that video when it’s online. (more…)
Over 40 amateur radio enthusiasts crowded the ad hoc meeting place for the March meeting of CMSARA. Due to the Tuesday election, the Association moved it’s meeting to a conference room at the City of Brandon Municipal Building to welcome one of the most influential amateurs in the U.S. Gordon West WB8NOA brought his best “game” via Skype to educate those in attendance on the “care and feeding” of ARES teams. For an hour, Gordo demonstrated key procedures and issues facing ARES teams in California and around the U.S. using actual radio QSOs from emergency situations. Moreover, he shared with the crowd his suggestions for improving emergency radio teams as they grow and mature.
Gordo complimented CMSARA’s motto of “We Do Stuff” as exemplary, saying that it’s important to keep engagement among ARES teams to keep their abilities sharp. By “doing stuff,” ARES teams have fun, the key to continual engagement. (more…)
We promised that there might be a hurricane at the July meeting. There was! Well, of sorts. Bobby Graves KB5HAV has been a leader in the development of both the Hurricane Watch Net (hwn.org) and the Maritime Mobile Service Net (mmsn.org). Some hams are active in this segment of emergency communications while others are fairly oblivious to them.
The Hurricane Watch Net was founded in 1965 during Hurrican Betsy. An informal group of amateur operators saw a need to provide communications into and out of the impact zone. The HWN has operated since during every hurricane that is projected to reach landfall in the Atlantic, Carribean Basin, and the Gulf of Mexico. It developed and maintains a direct formal communication partnership with the National Hurrican Center in Miami. The Net activates on 20M at 14.325mhz and 50M on 7.268mhz whenever a hurricane is within 300 miles of projected landfall or is a serious threat to a populated area. There are about 40 amateurs located in strategic locations around North America who officially support the HWN’s activities.
Mike McKay N5DU
At the May meeting, Mike McKay N5DU gave a good, down to earth, presentation of the various options available to amateur radio operators involving digital voice communications in the VHF and UHF bands (and higher frequency). N5DU focused on developments in Central Mississippi, the coverage area for the Association. Being a practicing attorney, Mike spends his days getting to the heart of the (legal) matter! It showed in his informative talk to those in attendance at the Rankin County EOC / MSU Extension Service auditorium.
“Digital voice gives the amateur a much greater fidelity in the transmission of messages,” said N5DU. But, he added, it tends to be an on or off condition as the digital signal drops out sharply relative to conventional FM analog. The data capabilities are growing with the ability to send pictures and other forms of communication. (more…)
Remember the Haiti disaster? How about those in the Philippines? We all remember Katrina! The Salvation Army is a worldwide church who has a strong emphasis in disaster relief implemented through emergency communications. Bill Fiest WB8BZH attended the Global Amateur Radio Emergency Communications Conference held last year in nearby Huntsville, AL. He plays a prominent role in the Army’s emergency network, SATERN. (more…)
Martin K5FLU explaining antenna and transmission line RF characteristics
Wow! The crowd in CSpire Auditorium in Ridgeland on Tuesday evening, March 31, 2015, was spell-bound by the mastery of antenna and RF transmission line characteristics exhibited by Martin K5FLU. If you don’t recognize that call, it belongs to Martin F. Jue, President of MFJ Enterprises in Starkville MS. He is the pioneer of the “antenna analyzer,” originally called the “SWR analyzer”.
For two hours, Martin showed the fundamental characteristics of resistance (R) and inductance (X) as they play out in amateur radio antennas and transmission lines. Coupling the MFJ-269C analyzer with the ARRL software, TLW, he gave a virtuoso performance educating the crowd of about 50 in attendance in Ridgeland.
CSpire executive John Nordan said, “We are most happy to serve as host for this very interesting meeting.” They played excellent hosts with audio-video support and making the Central Mississippi Amateur Radio Association bring off it’s first public program in Madison County, home to some 150 licensed ham radio operators.
Slides from Martin’s talk are available in PDF by clicking here. ARRL software TLW information can be found here and the software itself here.
Mike WM5A, Special Events Coordinator for CMSARA, said it best, “A good time was had by all.”
Our host, John Nordan, of CSpire gave our Invocation
President McKay welcomed the crowd on behalf of CMSARA
Frank K4FMH introduced our speaker
and made breaking news by introducing the newest product of the MFJ family to those in attendance...not authorized by MFJ!
Martin as a small boy at family grocery store in Hollandale MS
The latest technologies in consumer solar power options was the focus of CMSARA’s February program. A widely known Brandon ham, Steve Powell KF5QXU, told Central Mississippi hams that the current efficiencies in solar panels is about $1 per watt of electric energy although the batteries, frames, solar charge controllers need to be added into that equation for a full cost per watt.
A large crowd attended this informative talk. Many grilled Steve on some of the popular vague notions about solar-based power, such as whether 12VDC is the most effective voltage (yes) and how did the new bendable amorphous panels work? (well!) and what’s needed to keep the batteries from going bad (don’t let them get “low” on current). KF5QXU handled each question quickly with depth, referring some persistent ones to the diagram on his tee shirt. You can’t make up energy. You can just transform it with some less than perfect efficiency! (more…)
At the January 2015 meeting, Madison ham Tom Brown AE5I gave a superb talk on how to read and interpret the famous Robert Sherwood table of receiver ratings. They are the “gold standard” of Rx characteristics but many amateurs are not technically knowledgeable enough to fully comprehend what they mean. Tom AE5I is a long time RF Engineer for area radio stations (WJDX among others) and a partner in an antenna design company (OmegaTech).