Spectrum Analysis of a Smart Meter

We got our smart meter installed this past week, so of course I had to take a look at the RF signals coming from it. The results were very interesting!  I used the spectrum analyzer on an Anritsu S412E LMR Master™, which is fast enough to capture the 20 - 200 millisecond pulses in the 902 - 928 MHz ISM band coming from the PG&E electric smart meter (the meter itself was actually made by GE).

Summary of my findings?  As I expected, there's far more RF energy in the air from the TV and FM broadcast bands and cellular signals than from the smart meter's short-duration pulses.  You have to really hunt for the smart meter signals, which are buried underneath a lot of other stronger signals. 

The Un-Club: Validation

At ARRL Pacificon 2012 I presented "Club is a Four Letter Word" - during which I set forth the idea that most amateur radio clubs are hurting more than helping our hobby.  The thesis of my presentation was that, in the modern world where membership can be obtained by simply clicking the Like button on a Facebook page, and information on innumerable subjects can be obtained from YouTube and other sources, a traditional club structure is often not needed.  A recent article on the ARRL website entitled "The Un-Club" talked about many of these same ideas, and gave examples of how their group has rejected the traditional club model and the positive benefits from that approach. 

Consider Bay-Net in the San Francisco Bay Area.  It's increasingly one of the more popular amateur radio groups in the region, with a popular linked analog repeater system and D-Star node.  Bay-Net has no members; if you're on the email list, you're in the group.  Bay-Net doesn't hold regular meetings, except for a once-per-year gathering at which goals for the coming year are set forth for consideration and an informal expo is held where members bring in projects to share and discuss.  There are three "board members" (required to maintain the Bay-Net vanity callsign WW6BAY) but they're not treated any differently than anyone else and most of them group doesn't even know who they are.  We host a Field Day site every year and usually come in last place because we spend all of our time playing around with radios and gadgets instead of making contacts, but we always learn something. There are no dues; if we need to buy something we ask for donations and people step up. 

One of the great things about Bay-Net has been that it's attracted a lot of younger operators, which I credit in part to the "not a club" approach.  I encourage you to consider whether your club might be more efficient, more effective, and more inviting if it wasn't a club at all.

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Update: As if to yet again validate this idea, I received an email from a local club that allows non-members to monitor their mailing list:

We are having an election to make a change in the By-Laws. The proposed change is shown in RED LINE in the attached petition and adds the words "more than once" to the end of Article IV, Section 1 of the By-Laws. In essence the proposal is that the By-Laws be amended in order to allow officers to serve up to two one year terms in a row rather than only one term as presently provided. It would not extend officer terms and all officers would still stand for election each year at the April meeting.

Gaaahhhhh.....

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Update, Part II: I keep getting comments (here and on my G+ post) about the importance of f2f interaction and why clubs provide that.  Let me clarify: I'm not saying that Bay-Net never interacts f2f.  We meet up all the time, for a variety of reasons.  We just don't do it *formally*.  If we need or want to meet, we do.  What we don't do is waste time with minutes, financial reports, committee reports, voting, etc.

Narrowbanding: A Retrospective

The FCC-mandated deadline for narrowbanding is less than 100 hours away, and as was predicted many license holders will not make the deadline.  (e.g. New York City, Philadelphia, and Chicago)

Starting with a Notice of Inquiry in 1991, and ordered in 2004 (yes, it really took over 13 years for the gears of governmental progress to get from "should we do this?" to "we're going to do this") narrowbanding refers to the conversion of land mobile radio systems from 25 kHz channel spacing to 12.5 kHz spacing.  It was first formally considered in the 1991 NOI because, before cellular phones became affordable and widely available, land mobile radio spectrum in some areas was very scarce.  In many major cities during the 1980's and 1990's it was often impossible to add new channels. 

Dissolve (as they say in the movies) to late 2012.  Many commercial land mobile radio users have switched over to cellular, cellular push-to-talk, or even smartphone push-to-talk apps.  It doesn't make sense to pay an LMR repeater provider for something that has limited coverage, limited flexibility, and requires professional installation in a vehicle.  Yes, LMR works when disaster strikes, which is one of the reasons why amateur radio has kept non-cellular radio in its arsenal of disaster communication solutions.  For the average commercial user, cellular makes more sense operationally and financially.  So there's a lot more LMR spectrum to be had, and yet the narrowbanding mandate continues; a 2013 solution to a 1986 problem.

Why are we even bothering to continue?  There are a wide variety of possible reasons, the sum of which probably answers the question.  The government doesn't like to admit it made a mistake, or that its thinking is two decades behind the technology curve.  It wouldn't be fair to let some people off the hook, when others have already made the change.  (Although this doesn't hold up, because obviously big cities mentioned above ARE being let off the hook.)  And of course there's big money to be made in narrowbanding; the government charges a fee to modify a license, and the radio manufacturers charge taxes on sales of new radio equipment.

All of the above reasons would be perhaps excusable if the end result were something desirable like interoperability, but we're farther away from interoperability than we were 20 years ago.  (Ref: "Meeting the Interoperability Challenge", Witkowski, CMU DMI Workshop 2012)  At the same time the FCC has been beating the narrowbanding drum, it's also allowed proliferation of incompatible radio technologies into public safety communications.  So where before we had everyone on analog FM but at different frequencies, we now have FM, P25, NXDN, DMR, etc and the frequencies are still not aligned.  God forbid these people get hold of our healthcare system.  Oh wait...