KØNR: Radio Enthusiast

Lots of important stuff spewing forth from the Internetz.

TWiT’s HamNation netcast keeps on going, so give it a look.

The debate continues about potential likely interference to common GPS receivers from LightSquared’s proposed adjacent-channel transmitters. See this recent article  on the problem. If you want to dig deeper, the detailed documents are referenced here. LightSquared and the GPS industry are blaming each other. I tend to put the responsibility on the FCC, the regulatory agency that is supposed to keep spectrum and interference issues under control. This problem could be avoided by the use of basic EMC engineering but the FCC seems to be driven more by politics than engineering.

I have been playing around with Google Plus and, so far, I like it. It may be the optimist in me that says there must be an alternative to Facebook. If you need a G+ invite, send me an email: robtwitte at gmail.com

On twitter, I asked for suggestions on a big hamfest that is an alternative to Dayton. Most replies were for these:  HamCom in Dallas, TX; Hamcation in Orlando, FL; Pacificon in Santa Clara, CA. Well, HamCom is out, as it conflicts with the ARRL June VHF QSO Party (the biggest VHF contest of the year). You’ve got to be freakin’ kidding me!! The other two look pretty good.

73, Bob K0NR

The ARRL just filed a Petition for Rule Making with the FCC concerning a specific modulation format called TDMA (Time Division Multiple Access). This issue has been simmering in the community of repeater operators but I suspect that most hams have no idea what this is about. It so happens that the land mobile industry (most notably, Motorola) has developed a very efficient and cost-effective digital standard called DMR (Digital Mobile Radio). Motorola markets this technology under the name MOTOTRBO.

As often happens, some radio amateurs deployed this new Part 90 radio technology on the ham bands. Along the way, people started looking carefully at the emission designator that Motorola was using for MOTOTRBO and began to question whether it was allowed under Part 97. I won’t go into the gory details as it makes my head hurt . My brief look at this concluded that there is definitely an issue here but I am not completely convinced that DMR is illegal under Part 97. If you want to dig into this, read the petition in detail with a copy of Part 97 and a few aspirin in hand.

The ARRL probably did the right thing by requesting a very focused rule change which should remove any ambiguity from Part 97. (I know this will disappoint the arm-chair lawyers who make a so-called life out of debating these issues to death.) The ARRL also asked for an immediate temporary waiver from the FCC to allow for DMR operation while the rule making proceeds…another good move.

It is unfortunate that the FCC amateur rules were written in a way that (potentially) disallowed the use of the latest land mobile radio system. This is exactly what we don’t want to have happen in the Amateur Radio Service, as it should be a place for easy adoption of new technology. Future FCC rule making should keep this in mind, always erring on the side of flexibility.

- 73, Bob K0NR

Update on 25 Mar 2011:

The ARRL reports that the FCC is seeking comments on this petition, now designated RM-11625. Comments can be filed electronically here.

The FCC has adopted rule changes to Part 97.113, allowing employees to communicate on behalf of an employer during emergency preparedness drills.

I’ve posted several times about this topic, see EmComm Trouble, Time to Change the Rules,  FCC Moving Ahead on the topic.

The new version of the rules are listed here:

(a) * * *

(3) Communications in which the station licensee or control operator has a pecuniary interest, including communications on behalf of an employer, with the following exceptions:

 

(i) A station licensee or control station operator may participate on behalf of an employer in an emergency preparedness or disaster readiness test or drill, limited to the duration and scope of such test or drill, and operational testing immediately prior to such test or drill. Tests or drills that are not government-sponsored are limited to a total time of one hour per week; except that no more than twice in any calendar year, they may be conducted for a period not to exceed 72 hours.

 

(ii) An amateur operator may notify other amateur operators of the availability for sale or trade of apparatus normally used in an amateur station, provided that such activity is not conducted on a regular basis.

 

(iii) A control operator may accept compensation as an incident of a teaching position during periods of time when an amateur station is used by that teacher as a part of classroom instruction at an educational institution.

 

(iv) The control operator of a club station may accept compensation for the periods of time when the station is transmitting telegraphy practice or information bulletins, provided that the station transmits such telegraphy practice and bulletins for at least 40 hours per week; schedules operations on at least six amateur service MF and HF bands using reasonable measures to maximize coverage; where the schedule of normal operating times and frequencies is published at least 30 days in advance of the actual transmissions; and where the control operator does not accept any direct or indirect compensation for any other service as a control operator.

 

The FCC does allow for drills that are not government sponsored, but did include some time limits on these exercises. At first glance, these rules look reasonable to me. What do you think?

        73, Bob K0NR

It’s time to do one of those miscellaneous collections of drivel that spews forth from the interwebnet pipes. Some of this might even be important!

Some upcoming events: ARRL June VHF QSO Party and the Colorado FM Sprint, on the weekend of June 12th. The FM Sprint runs concurrently with the ARRL contest but only on Sunday afternoon. This is a good chance to get on the air with very basic equipment and have some fun.

The ARRL Field Day is coming up on June 26th and 27th. This is arguably the biggest on-the-air amateur radio event in North America.

I was playing around with setting up an SMS text messaging system for callsign lookup. The idea is that you send a text message (containing an amateur call sign) with your mobile phone and get the FCC or QRZ info back. In the meantime, I found that this problem has been solved by Callsign By Text. Very nice, check it out.

Female radio amateurs should check out Chick Factor International. It looks like a fun group.

I picked up a DV Access Point (DVAP) for D-STAR. This is a neat little device that provides flea-powered D-STAR access on 2 Meters by plugging it into a PC with internet connection. The South Yorkshire Repeater Group has a good description of the product. So far, this thing works really well.

By the way, the South Yorkshire group has a really good web site…interesting and timely information. Although they are in the UK, I find it relevant to US ham radio activity, too.

The Technician Class License question pool will be updated as of July 1, 2010. Our next Tech Class in Monument will be in October, so we’ll be updating the classroom material before teaching that class. It is clear that more technical content is being added to the question pool, which I think is a good thing. See KB6NU’s posting on the topic.

From The Complete Waste of Time Department, the FCC once again dismissed a petition from K9STH to change the amateur radio station identification requirements. Look, the FCC doesn’t see a problem here (and neither do I) so save yourself the trouble.

The FCC is seeking comments on the proposed new rules concerning emergency communications.  I took the time to file a short comment, basically saying that the FCC is on the right track but they should remove the reference to “government-sponsored drills”. Any legitimate emergency communications drill should be included, regardless of who sponsors it. The ARRL made similar but more detailed comments.

- 73, Bob K0NR

The FCC has released a Notice of Proposed Rule Making (NPRM) concerning use of amateur radio by employees of governmental and other agencies. I had previously posted my thoughts on this topic back in October 2009.  A read of the NPRM on the FCC web site reveals that the FCC clearly sees this as an issue that needs to be addressed.

The tone of the NPRM is “what is the best way to address the problem” rather than “should we address this issue”?  In fact, the FCC went ahead and proposed this specific rule change for Part 97.113:

§ 97.113 Prohibited transmissions.
(a) ***
(3) Communications in which the station licensee or control operator has a pecuniary interest, including communications on behalf of an employer, with the following exceptions:
(i) A control station operator may participate on behalf of an employer in a government-sponsored emergency preparedness or disaster readiness test or drill, limited to the duration and scope of such test or drill, and operational testing immediately prior to such test or drill.
(ii) An amateur operator may notify other amateur operators of the availability for sale or trade of apparatus normally used in an amateur station, provided that such activity is not conducted on a regular basis.

The ARRL article concerning this development provides a good summary of the proposal. N5FDL has a brief discussion of the NPRM on his blog. Comments can be filed electronically on this NPRM on the FCC Electronic Filing Comment System.

I think this is moving in the right direction.

- 73, Bob K0NR