All Day Seminar - SBE Certified Broadcast Networking Technologist (CBNT)
GREAT NEWS! If you are interested in learning about computer networking as it is related to the broadcast environment, we have the class for you! We are setting up this wonderful opportunity for you to become certified with the SBE "Broadcast Networking Certification" class!
This class is designed for broadcast professionals having a basic familiarity with networks and networking systems as used in a broadcast facility. Upon successful completion of the class and the exam given, you will given the Broadcast Networking Technologist Certification by the Society of Broadcast Engineers.
The class will start promptly at 8:00 AM. Food and refreshments will be provided.
DATE: Saturday May 10th, 2003
If you are interested in attending this class or would like more information, please contact Robert Whiting prior to May 1, 2003.
Robert Whiting, Chair SBE 48
Random Radio Thoughts
Cris Alexander, CSRE
There is no doubt that our industry is in a time of transition. The question is, from what to what? Those of you who were at the NAB convention this year (and last year, and the year before that) were probably left with the impression that we are on the doorstep of a transition from the analog transmission world we have lived in since radio was born, to the brave new world of digital or High Definition (HD) Radio. Wasn't it nearly a decade ago that we were told that a digital transmission medium for radio was "just around the corner"? The difference now is that the technology is here, and more importantly, available. Most of the HD Radio products on display on the exhibit floor are available now; manufacturers and distributors are taking orders. In some cases, previously ordered HD product is now ready for shipment.
What does this mean for those of us who make our living plying the radio engineering trade? For some, it means very little in the immediate future. Just a small percentage of domestic radio stations have committed to make the conversion to the hybrid HD Radio mode in this first wave of implementation. Most of those conversions will take place in the nation's top six markets; our fair city is a bit farther down the list. For others, though, plans have been set. Those individuals are having to change their thinking about a number of things.
At the end of March, Clear Channel hosted an HD Radio technical seminar at its facility on South Monaco. Broadcast Electronics, a manufacturer of HD Radio generators, exciters and transmitters, put on the seminar. Tim Bealor, John Abdnour and Richard Hinkle were on hand from BE. Also on hand were Max Brown of ERI and Chris Kreger of RF Specialties. The program consisted of a well-produced PowerPoint presentation explaining the more practical aspects of HD Radio implementation for both FM and AM. A wealth of material was presented, and many questions were answered. Some of the topics discussed were bandwidth requirements for AM antenna systems; transmitter compatibility; high-level injection, common amplification and separate antennas; FCC requirements; audio processor requirements/configuration; data rates; and STL requirements. Last November, the FCC completed a rather comprehensive process revising its Part 74 Broadcast Auxiliary Service (BAS) technical rules. Among many others, the changes included immediately allowing true digital modulation in all TV and aural BAS bands, modification of the emission masks to make them similar to those used by Part 101 services, raising the power limit for aural BAS stations to 40 dBW, adopting temporary conditional authority (TCA), changing the 160 MHz and 450 MHz RPU channel bandwidths to match Part 90 Land Mobile channel bandwidths, and providing for FCC-designated special event frequency coordinators.
Perhaps most notably for radio broadcasters, however, is a requirement to use Part 101-type coordination for BAS fixed stations. This means that we will no longer be able to call our local SBE frequency coordinator to obtain a frequency coordination for a new or modified STL or ICR link. Instead, we will have to shell out $1,000 or more to Comsearch or some other firm that offers such services. Some of the larger groups may opt to do their coordination in house, and there are BAS database and search engine sources available so that radio groups can do just that. Most of these rule changes were set to take effect April 16. The SBE requested a one-year temporary stay to allow BAS licensees time to provide and correct BAS receive site information in the BAS database. The FCC granted a six-month stay; the new rules will now be effective October 16. For coordination to work, it is imperative that the information contained in the database be accurate. As the SBE noted in its stay request, many older records do not include receive site information. I would encourage each of you to check all of the records for your BAS licenses for accuracy in the online ULS database. The URL is http://wireless2.fcc.gov/UlsApp/UlsSearch/searchLicense.jsp. To make sure there are no "dead" records in the database, perform a licensee search to find all the records associated with your license entity. Immediately file corrections as appropriate.
A few notes of interest around the Denver market... A couple of stations are getting around the congestion and coordination requirements for BAS stations by moving to unlicensed DSSS (spread spectrum) systems. While Moseley Associates, a well-known manufacturer of broadcast STL, ICR and RPU products manufactures such a system, there are a number of alternatives available, devices and technology originally intended for use in wireless Internet. KNRC first pioneered use of this alternative delivery method, linking its downtown studios to its Douglas County transmitter site with several 5.7 GHz hops using the Motorola Canopy system. Crawford's KLZ recently began experimenting with a similar system from its Highland studio. The need for an isocoupler where the receive antenna is mounted on a "hot" AM tower is eliminated by simply repeating from the tower to the rooftop of the transmitter building with another link. Reflectors give the antennas a 1.8-degree beamwidth, which should be adequate for off-axis rejection in most cases.
KJME recently received an FCC construction permit to relocate from the Denver Drywall site near Dartmouth and Santa Fe to the KLZ site near 78th and York. KJME will diplex into one of KLZ's 450-foot towers with 1.3 kW daytime. The diplexer will also permit the station to drive the second KLZ tower to permit daytime maintenance operations on the other tower.
KCUV, 1150 kHz, is undergoing a facelift. The station was recently purchased by Newspaper Radio Corporation, and in an effort to restore the station to a first-rate facility, the existing site is being upgraded. The transmitter building is being replaced, along with ATUs and doghouses, transmitters, phasor and ancillary equipment. Only the towers and ground system will be original 1978 equipment when the project is done. Paul Montoya is running the project, commuting in from Cheyenne each week.
One of the hot items at NAB 2003 was the Kinstar Antenna, which at 40-feet in height has been proven by measurement to produce 95-98% of the inverse distance field of a quarter-wave radiator. One of the first Kinstars to be built in the U.S. may end up right here in Colorado at KEZZ in Estes Park. After losing many battles with the city and county in trying to relocate its transmitter site, the Kinstar may provide the solution that will keep the politicians and residents happy. If the FCC approves the application, the installation should take place this summer.
If you have local radio engineering related news you'd like to share in next month's newsletter, drop me a note at firstname.lastname@example.org.
NAB Convention 2003
By Bill Harris
As the Australian gentlemen in line at McCarran airport said, "It was a pretty good show, actually". That seemed to be a fair assessment of the 2003 convention in Las Vegas. During my visit on Tuesday, April 8th, I saw a steady, if slightly lighter, flow of folks through the main entrance and on and off the exhibit floor. Of course, the final count will ultimately tell the tale of this year's event. It also appeared that the general tone was more subdued, perhaps a reflection of the economic times and the war in Iraq. But the show went on, with plenty of exhibitors displaying their wares, including, of course, lots of 'high def' in both radio and TV.
This shot in the Radio hall shows that some of the aisles were extra wide probably due to fewer exhibits. The Orban Mobile Lab was on hand in the Radio hall.
The guys from Clark Wire and Cable, a long-time sustaining member of SBE Chapter 48 and Rocky Mountain SMPTE, were on the job. Chris Kreger from RF Specialties in Missouri poses with one of Broadcast Electronics' IBOC ready FM transmitters.
The SBE booth in the main lobby was experiencing regular visits from both members and non-members seeking information about membership and the certification program. That's former national president Terry Baun on the left and Barry Thomas of Thomas Consulting in Los Angeles with Terry.
A pretty good show, actually.
It's 72 degrees, sun is setting into storm clouds and 6:00 PM on the 16th of March, 2003. I'm having that "OK, it can rain now" feeling. It's a good feeling... sort of a Midwest thing, as you move the hay or anything under cover... so now it can rain, or snow... or whatever...
Ron Vincent's finger is smarting, and we did crush one furniture dolly (Chinese rated at 1000 lbs, we set in the center of the rig at one point as we got the rig down off Jody's horse trailer; BTW, horses weigh 1400 lbs each, and bounce around while trailering... so this was easier).
In the garage (my "Indiana" room, located firmly on my side of the Les Nessman line) up against the couch (a necessity, along with a stereo, fridge, tools, and a TV for any Indiana room) is the 1952 Gates (pre Harris) BTA-1F transmitter, with spare tubes and the likes, it's transformers, reactors, and some other stuff are spread out around it.
When Joel Humke called to say that there was an old AM rig available for the hauling, I was excited to hear that it was an "F." If I remembered right, my very first Chief's gig, at WMIR in Lake Geneva, Wisconsin (Yes, right across from the Play Boy Club) had just this rig, and first brought my name to the attention of the FCC... but that's a story I've told a number of times (God bless you George Sklom of the Chicago office, wherever you are). One look... that's the guy.
I have answered every listing of a Collins 20V for sale in North America... always pulled from the market or gone by time I see the ad. The Gates at 2600 pounds, over 6-feet high and wide, it's not an easy mover, unlike the venerable 20V, and frankly a little boxy and unattractive. With 18% AC to RF efficiency (5500 watts in at 85% modulation), the 1-F is a better furnace than a transmitter.
What I know is that it has 57,333.8 hours, or maybe 157,333.8? There has been 480,000 intervening hours since she was originally tuned to 1220 kHz (KBNO's frequency) and made it over to 1150 kHz (was KCUV, also Spanish). BTA-1Fs went on the market in 1951, but the manual for this one was published a year later.
So the intent is to refurbish it to as close to the original condition as I can get it, retune to 1850 and 1860 kHz, for AM operation on the 160-meter ham band, and eventually make it available to a suitable museum. If I can, I'd like to find enough to put together a 1950s-60s-70s station to go with it.
So, I'm looking for spares, especially mercury vapor rectifiers 866, 575 and some 5U4s... Also the finals 833s, and drivers 845, 813, 807 (I think I'm good with 6V6, 6J5, and 6J7). Likewise, a generic power transformer, inductors and non-PCB caps would be good, and a couple of contactors, old loads, and networks would help.
Don't expect anything fast... It'll take a few years to get this on line... I have lots of shop and antenna and (God forbid) barn stuff to do... so I should take advantage of the snow storm, and get back to work...
Thanks Joel and Paul, and everyone who has added to the 50s AM project.
I did especially like page 24 of the manual... The manual is short by today's standards and unaffiliated by the marketing hype and legal obviscation... so it is in fact useful!
Featuring News, Rumors and Views
By the time you have read this, NAB 2003 will be but a memory and our thoughts will be turning to less rain and more sun. Let's see now what's been going on in our world.
Another big story in mid-March was the release of Elizabeth Smart in Salt Lake City. Again there was a call for making the Amber program a national, funded, activity.
Received some wonderful news the other day in the form of an email from Russ Hill. Russ is back to work! It was last summer-as I was on my way to West Tiger Mt.-when I got a radio call from Dick Trumbo telling me that Russ had fallen from the tower. I recall meeting the ambulance at the gate and leading them to the site... and finding Russ, severely injured, lying on the ground. For Russ the past months must have seemed like an eternity. We wish you well, my friend... and welcome back!
Well we have a new radio station in the area... sort of. This is even lower power than a Low Power. I am talking about the new 1500 AM station in Auburn. We used to call them 'phono-oscillators'. But the backers of this micro-power operation in Auburn have plans of a network of these little emitters covering the South Sound community, and if their dreams come true... they hope to add a LPFM to the operation. Interesting that the local print media has given this so much attention. Check out their web site at www.auburncommunityradio.com.
IBOC or HD Radio continues to make the news with lots of announcements of equipment sales by the two major vendors, Harris and BE. I found it interesting that a number of NCE stations and facilities in smaller markets are jumping on the HD bandwagon. I would have thought that this would have been a major market only situation. In February I was In WDC for an EAS meeting, while there spent some time with old bud, Tom Shedlick. I asked Tom about HD in the nation's capital and he told me that there has been some 'talk' but that's all. Hmmm. Here in Seattle, according to what I have come to learn, we will likely have 7 IBOC/HD FM stations on the air by year's end. Infinity will have their, already installed, 106.1 operation; Entercom will have all six of their FMs... the most recent addition to the first wave of Digital FMs is KING.
Before I go on... a number of folks have been critical of the term IBOC, meaning In-Band-On-Channel, in that the FM system actually makes use of the ADJACENT channels. An un-named at H&D was recently quoted as saying that IBOC stands for In-Band-OFF-Channel. My version of this is 'I-Bother-Other-Channels'. Like it or not, looks like it's here. At least the mistakes of AM stereo don't seem to be repeated.
At the last SBE meeting, Mike from the local 'office of the Commish' noted that the FCC has issued a notice dealing with making truthful VERBAL statements to the FCC. If you read this notice you quickly noted that it was carefully written by those with law degrees. In other FCC news... Verizon recently donated 5.7 megabucks to the treasury... something to do with the way they were marketing long distance services. And a pirate radio operator was nailed to the tune of 35K Bucks. Mike pointed out that there are still stations that have not registered their towers or have the appropriate sign posted... or, can you believe this, don't have working EAS equipment. Mike did not mention it... but I will... Rebecca Dorch has recently been named Western Regional Director for the FCC Enforcement Bureau. (Her degree is in Law.) The Seattle office is in her district. I also noted that a Robert Spiry was given a $10K NAL for un-authorized operation. Meanwhile, William Woods was to pay $7K 'cause he did not want the FCC to inspect his station. Both these fine folks apparently live in Tacoma.
Good news for Clear Channel as the mondo media operator reported good 4th quarter earnings of $184 Million. Certainly many are watching the Iraq situation as advertising historically gets hit during war times.
We have had some recent fires of note, specifically the tragic club fire in Rhode Island that has caused fire inspectors to step up their activities. This should serve as a wake-up call to us all to keep a close watch on our facilities in terms of fire prevention. If you want to see how bad it can get take a look at this site www.ccdx.org/scrapbook/MtWash/MTW.htm. The pictures detail a devastating fire that raged on famous Mt Washington in New Hampshire. What a mess... sure makes you thankful that you have sprinkler systems at your transmitter site!
In my last column I reported that I was going to WDC to attend a meeting re. EAS. When I got there, they were recovering from a two-foot-plus snowfall. Streets only had a couple of lanes open and traffic was a mess... but the meeting was good. Officially this was a MRSC (Media Reliability and Security Council) meeting. At this session, held in the NAB Board Room, were representatives of FCC, FEMA, NOAA and other governmental agencies in addition to a number of State EAS Chairs and organizations that are involved in public warning systems like PPW. I was in attendance representing SBE. We were in session all day and when all was said and done there was a lot of constructive dialog and the 'Feds' certainly got an ear-full. Time will tell whether or not this effort will bear fruit.
From the 'you never know who is reading this' department comes this item from Ed Forke. If his name sounds familiar it's because you have seen his company's ad in the Waveguide... give you a hint... Shively. Well, anyway, Ed has apparently decoded the fact that your humble writer's mind is a bit twisted and submitted this gem...WARNING! you have to read this one CAREFULLY.
"If you are what you eat, then you couldn't be something until you've eaten something. But you can't eat something until you are something. So you must be something before you eat something. Therefore, it's not true that you are what you eat" Ed adds to this wonderful observation the following... "This would be true only if you are identical to (the same thing as ) your body." Wonder if this is caused by the cold weather in Maine? Thanks, Ed... I think.
I see where Europe is going to send its first mission to the Moon in July. I have to wonder, in light of recent events, if the Arianespace project that's supposed to orbit the Moon will be vetoed by the French?
Understand that Chairman Powell was in town recently as a part of the FCC's work aimed at overhauling the media ownership limits... didn't go, did you? This is going to be interesting...likely to be causing stress proportional to the size of the organization.
At this year's NAB John Reiser got the Engineering Achievement Award for Radio while Robert Eckert won for TV. I really don't know either one of these fellows. However, I have noted that John continues to pop in once in a while and join a thread on Radio-Tech, one of the B'Net remailers.
Have you been tracking the late evening TV Newscasts? First there was 5 on 16 at 10, unless you have cable in which case it's 5 on 6-16 and 10. Now it's 7 on 11 at 10. (sounds dicey). The obvious next step will be 4 on ____ @ 10.
Noted that the NAB Crystal Radio award list of finalists did not include any stations in the Northwest this year. Wonder what happened?
Another manufacturer of Radio transmitters has bit the dust. CCA is no more. Some of their leftovers were on E-Bay. Hardly a good feeling for a station with a CCA Rig. This impacted one of the Entercom stations back East. I received a call from their chief (who was concerned about his CCA transmitter) who was trying to reach the factory for some advice. Come to think about it there are a number of transmitter makers that are no more with rigs still turning out the kilowatts. RCA, McMartin... and the last time I heard, over in Tri-Cities, a Visual. Interesting that there are very few things around a broadcast plant that are over 20 years old and still doing their job. Up at Cougar Mountain we have six Collins transmitters that were all made in the middle to late 70s that are still going strong.
Remember the Telezapper? It's the little gizmo that you install on your phone to supposedly get rid of the telemarketers by emitting a tone when you answer the phone that tells the automatic dialing equipment that your number has been disconnected. Well it did not take long. A new tool is on the market now that enables the telemarketers to get around it. Sounds strangely like radar detectors.
One of the major losses this last month was the passing of Fred Rodgers. He was likely to be known by just about everyone as the gentle voiced host of "Mr Rodgers' Neighborhood". He taught many a youngster some great values.
A great victory for Andy Scotdal and KRKO with the announcement that after a very long and expensive fight the station will be able to build their new transmitter site and increase power. Andy, you could write a book... and perhaps should. Nice to see Andy at our recent EAS/SECC meeting too.
The International Electrotechnical Committee (IEC) recently blessed the Digital Radio Mondiale or DRM system for broadcast bands below 30 MHz. Still think that this movement needs to be watched very carefully.
The following is a letter that you'd expect to receive in April. But this IS serious. It's from the USDA and concerns those that operate communications equipment in the Cleveland National Forest. Get a load of this language... "the USFS will require the installation of anti-perching devices on all microwave sites within the four national forests at issue in this case." The letter goes on to list some commercial companies that provide anti-perching materials. And you thought that you'd heard it all?
SpectraSite has emerged from bankruptcy and changed its name to SpectraSite, Inc. The firm operates a number of sites around the country including some in this area.
According to Walt Lowery's Harris Newsletter Bill Glenn has recently installed a new DX1O transmitter at KYAK in Yakima. The station is owned by Tom Read. If you recall, Tom was a broadcaster in Tacoma many years ago where he worked as DJ, booth-announcer (remember those?), Broadcast instructor and radio station owner (KTWR). For the past several years he has owned and operated a number of stations in Eastern Washington. I remember Tom driving around with a purple T-Bird with a Marti transmitter in the trunk and a bumper mounted 'halo' antenna... those were the days.
Well it's time to leave you with some parting wisdom (it would not be "Clay's Corner" without it, right?). The following word meanings come from none other than Jim Hatfield, who also shares my twisted synaptic traits -
I'd love to use the others, Jim... but this is a family publication.
To finish off this month... these from Bruce from the Bean Remailer - 10 years ago -
And finally -
Clay, K7CR, CPBE
The above comments and opinions are those of Clay Freinwald. They are not the opinion of the Society of Broadcast Engineers, Inc., or Seattle Chapter 16, Inc.
The End User
April 2003 Issue
Last month, the Waveguide celebrated its 20th anniversary. But did you know the Mac also turned 20 this year? It's true - the first Mac hit the stores in 1983. To mark this milestone, Apple released a limited edition (only 12,000) 20th-anniversary Mac with (get this) a special flat-panel design made with metal and leather, a built-in television, a FM tuner, and a specially designed sound system with separate subwoofer. Price? $7500 - but that includes home valet delivery and setup. And those 12,000 units will only be available in the US, the UK, France, Germany and Japan. As they say, "order before midnight tonight..."
And in other Mac news - five years after its introduction, the original iMac - the colorful, teardrop-shaped computer that helped revolutionize PC design (and made users become accustomed to not having a floppy drive in their computer!) has been discontinued. The new entry-level offering from Apple is the eMac - basically, an iMac with a 17-inch monitor. Amazingly, but not surprisingly, iMac users have been writing eulogies since learning of its demise.
Have you seen those commercials for Intel's new Centrino line of mobile computing hardware? You probably have and don't know it. The commercials (running in prime-time on the major networks) show users setting up their desks and computers in just about any location - in a park, out in a meadow, or other locations away from the "traditional office". But none of the commercials identifies just what Centrino is and how, specifically, it makes your "computing life" more pleasant. So here's the bottom line: Centrino integrates the notebook CPU, wireless networking and peripherals into a more compact and lower-power-consuming form factor. The fastest Centrino CPUs are 1.6GHz - considerably slower than the fastest Pentium-4M chips, and the wireless networking only supports the older 802.11b standard. While the basic technology is certainly not state-of-the-art, Centrino's platform does enable additional miniaturization of the notebook's motherboard, resulting in a new generation of smaller and lighter notebooks that run longer on batteries. This is certainly a big advantage to the corporate IT crowd, but not really a technology the mainstream user clamors for.
Another month - another website that erroneously priced an item - another story of how buyers are angry because the vendor won't honor the incorrect price. The pricing error is nothing new - store clerks have made pricing errors for years. The difference is that maybe a handful of items would have been sold at the wrong price before it was caught. The WWW changes all that - now, thousands can order an incorrectly-priced item before someone realizes the mistake. But online retailers are smart, placing "CYA" language that effectively lets them cancel any order placed with an "incorrect price." In spite of this, there are many people who continually scour websites looking for pricing errors - and then get indignant when the prices aren't honored.
That's it for this month. Questions, suggestions or comments? Send 'em to email@example.com. Till next month....all the best!
The above comments and opinions are those of Rich Petschke.They are not the opinion of the Society of Broadcast Engineers, Inc., or Seattle Chapter 16, Inc.
PDX Radio Waves
by Michael D. Brown N7AXC CSRE
It wasn't just a busy week. It wasn't just a knock-down drag-out fight to get the job done. It was a record-shattering onslaught. No, I'm not talking about the war in Iraq. I'm talking about the FM translator filing window, which ran from March 10-17. The estimates we've heard lately were that 18,000 applications were filed. By our count (based on the incrementing of the 3 letter file-number suffixes), over 8,000 applications were filed in the last 2½ days of the window alone. For perspective, there are currently about 3800 FM translators and boosters on the air. During five LPFM filing windows, which were much busier than expected, a combined total of 3285 applications were filed. 18,000 applications in 8 days is nothing less than a mind-blowing event. While most of these applications are now listed as "filed", none (as far as we can tell) appear on the FCC database or have been Accepted for Filing. In calls we made to the Commission, the staff was unusually silent on just about every issue. It's clear that they are just shell-shocked at the situation, and it may take years to sort it all out. In the waning days and hours of the window, the CDBS filing system became utterly and hopelessly overloaded. The system ground to a halt, and would repeatedly crash or kick us out. We would have to enter and re-enter information several times, and wait forever for anything to happen. A lot of applications could not be filed as a result, nationwide. With four computers running seven screens, we just barely got all our paying customers filed. All engineering consultants and attorneys we were in contact with were also hopelessly overloaded. We turned away quite a number of late-comers. Is this any way to run a filing system?
Emphatically, we think not!
So what kind of system would work better? Commission staff have told us that filing windows are seen as necessary to facilitate the auctioning of mutually-exclusive commercial applications. Perhaps the filing windows should run longer when heavy traffic is anticipated - up to 60 days. Or perhaps applications should be continuously accepted, and periodically (or even randomly) cut off every few months, and a batch "loaded up" for an auction. Almost nothing could be worse than what happened last month. Nothing could cause a "herd mentality," sloppy and speculative applications, and frazzled engineers and attorneys worse than a one-week window. So who are all these applicants? Since commercial stations are limited to fill-in translators, and most of these stations have concentrated on improving their core signals rather than filling in, it's likely that the two biggest categories are: A) national religious non- commercial networks, and B) speculators. Down the list are probably local commercial and non-commercial applicants, including translators for LPFM stations. While LPFM stations cannot own translators, independently-owned and operated translators can rebroadcast LPFMs.
Speaking of war, whatever we might think about the prudence of Gulf War II, it's clear that broadcasting is a vital link once again. By the time the daily paper arrives, it's already old news, thanks to broadcasting.
Portland's Stonehenge Tower has a new "pimple" on top: the one-bay DA for 94.7 KNRK, Camas WA. All that remains are final tests and receipt of Program Test Authority from the Commission. ERP will be 6.3 kW. [KNRK started using it on Thursday afternoon, April 3rd. Picture at http://www.sbe124.org/newsletters/pdx0403. - ed.]
On the local TV front, the Commission has finally approved the sale of KWBP-32 from Acme TV to Tribune Denver Radio, Inc. IBOC for FM appears to be rolling out nicely in the seed markets. In Seattle, 7 FM stations, including all of Entercom's FMs, are expected to be running IBOC by the end of the year. For better or worse, it's appearing that IBOC, at least for FM, will likely be a reality. The FCC has announced that they will now allow IBOC operation without an STA or any other prior approval. Meanwhile, the unflattering acronyms continue to make the rounds, IE: In-Band, Off-Channel, or Clay Freinwald's favorite: I-Bother-Other-Channels.
An enterprising chap from Israel with obviously too much time on his hands, put a vinyl record on his flatbed scanner, made four passes, pasted them together, wrote a program, and actually got discernable audio out of his computer. See: www.cs.huji.ac.il/~springer/ (thanks to CGC Communicator and Ron Patten, KG6HSQ, for the link)
Finally, from Broadcast.net comes a post from CPBE Tom Osenkowsky about the new revolutionary "Longhorn Dipole. According to Tom, "The reduced multipath characteristic is a function of the horizontal-to-vertical ratio of the element length and the insulating material which encapsulates the metallic radiating element." See this new antenna at: www.oldradio.com/dipole.jpg
Jeff Foxworthy on Colorado:
Garneth M. Harris
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Views expressed herein do not necessarily reflect the official positions of the Societies, its officers, or its members. We regret, but are not liable for, any omissions or errors. The Denver SBE and SMPTE Newsletter is published approximately twelve times per year. It is prepared with a combination of text and graphic data. Submission deadline is 10 days before the last day of each month. Other SBE or SMPTE chapters are permitted to use excerpts if attributed to the original authors, sources, and/or the Denver SBE/SMPTE Newsletter.