A monthly newsletter by Society of Broadcast Engineers Chapter 48

August 1999

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The July 1999 Meeting
Upcoming Meetings and Events
SBE, NFL Forge Cooperative Effort To Frequency Coordinate All NFL Games
Job Postings
Rocky Mountain Film & Video Expo '99 Coming To Denver In October
Millennium Certification Project Your Opportunity to Get Re-certified
You asked for it... Certification Sample Tests On Diskette
Static Line: Noise from all over!
Clay's Corner
The 'Cantenna' At Lake Dolores
Our Kids
Miniature Robots
A Texan's Guide To Life
PDX Radio Waves
Road Kill
Some Notable Quotes
Half Empty?
The End User

The July 1999 Meeting

Our "Nth Annual" picnic was a great success. Nearly forty folks met on the patio outside KWGN's transmitter building on Lookout Mountain on Wednesday, the 21st. There were people in attendance from Clear Channel/Jacor, RCA, Itelco, AMFM Inc., TCI/NDTC, Tribune, the Denver FCC office, KCNC, and many others. The lunch was provided by TCI/AT&T, Eric Schultz arranged the catering with Fred LaCount and Phoenix Services and Fred Baumgartner approved the expense. Thanks, guys!

The business meeting was brief, Fred brought the group up to date on the planning for "KFPR - Front Porch Radio", which he has been working on for a while now. A vote of the membership to proceed with "formalization" of our group was taken and passed. Fred passed out a draft of a document entitled "Articles of Incorporation of The Society of Broadcast Engineers, Inc., Chapter 48, Denver Colorado". For a complete copy, check the SBE48/SMPTE Web site at www.broadcast.net/~sbe48.

It is necessary to be an "entity" to apply for a FCC license, so this is the important first step toward that action. Our ongoing thanks to Tim Cutforth of Vir James Consulting for his work on the project and Keith Ericson for providing the tower space for the transmitting facility. We'll keep you on top of this effort here and on the SBE48/SMPTE Web site at www.broadcast.net/~sbe48.

The rest of the gathering, which, by the way, did NOT get rained on, was devoted to enjoying the burgers, brats and dogs and the delicious desserts and lots of friendly fraternization, which is, of course, the hallmark of our July picnic meetings.

Be sure to put our next meeting on Wednesday, August 18 on your calendar right now. It will be the long awaited presentation from that Professor of Power, the Guru of Gensets, the Wizard of Watts....Dennis Roundtree, now with Plannergy, Inc. Join us at the National Digital Television Center at 4100 East Dry Creek (look for all the satellite antennas and the HUGE genset) at 12:00 noon for dutch treat lunch in the cafeteria, then for the business meeting and program. Enter on the WEST side of the building.

See you there!

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Upcoming Meetings and Events

August 18, 1999 Backup Power - Dennis Roundtree, Plannergy, Inc - 12 noon, NDTC
Aug. 31-Sept. 3, 1999 NAB Radio Show, Orlando, FL
September 15, 1999 Burst Communications - Program TBA
September 24-27, 1999 Audio Engineering Society 107th Convention - Jacob K. Javits Center, NY, NY
Sept. 29-Oct. 2, 1999 RTNDA - International Conference & Exhibition, Charlotte, NC
October 6-7, 1999 Rocky Mountain Film and Video Expo
November 10, 1999 Certification Night / Open House , Chapter Elections
November 19-22, 1999 141st SMPTE Technical Conference & Exhibit, NY, NY
December 15, 1999 Hands-On DTV, Howard McClure, Itelco
January 19, 2000 TBA
February 16, 2000 Kelly Hannig, Gentner Remote Control - 6:30PM, KCNC

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SBE, NFL Forge Cooperative Effort To Frequency Coordinate All NFL Games

The Society of Broadcast Engineers and the National Football League have announced a cooperative effort to coordinate frequency use for all regular season and post-season NFL games beginning with the 1999 season.

SBE coordinators have, for many years, coordinated NFL regular season and playoff games, working with the various networks, local stations and other users. The ever growing media demands of NFL games along with the enormity of playoff games, especially the Super Bowl, require a massive effort on the part of these local volunteer coordinators to coordinate the hundreds of requests for frequencies. Coordination is essential, not only to keep the users of these frequencies from interfering with each other but also with those of local broadcasters. This cooperative effort between SBE and the NFL will provide all licensed users of frequencies at stadiums around the country as interference free an environment as possible.

Through its local chapters and frequency coordinators, SBE will appoint a Game Day Frequency Coordinator for each team's home games. The Game Day Coordinator will be equipped by the NFL with a laptop computer, scanner, press box space and a telephone. The NFL will also provide database software and contact information for each team's personnel and local and network media. Event coordinators will work as volunteers. They will be offered $150 reimbursement for out-of-pocket expenses. Should the coordinator elect not to accept the reimbursement, the NFL will offer to make a $150 donation to the local SBE chapter. The NFL will also provide each event coordinator with a booklet of standard event operating procedures authored by SBE. Also provided will be a parking pass and two All Area Passes will be provided the Game Day Frequency Coordinator for each game.

The Game Day Frequency Coordinator will work to coordinate frequencies with local and visiting team radio stations, the television networks, equipment suppliers and other users of spectrum within the stadium and its surrounding environment. Problems that cannot be resolved by mutual consent will be reported to the NFL and a cooperative effort will be made to find amicable solutions.

Rick Edwards, SBE's national Frequency Coordination Chairman, has already begun working with local SBE chapters and frequency coordinators to identify local event coordinators and a back up for each NFL city. Rick can be reached at Rick@cityscape-siting.com or at (954) 757-5757.

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Job Postings

As a service to SBE/SMPTE membership, technology positions in the Rocky Mtn. region are posted at no charge. Please send your posting to:

Rome Chelsi

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Rocky Mountain Film & Video Expo '99 Coming To Denver In October

DENVER, Colo. - (June 16, 1999) - "Cool Gear and Hot Ideas" is the theme for the Rocky Mountain Film and Video Expo '99, produced by ExpoMasters Inc. This dynamic event is scheduled for October 6-7, 1999 in The John Q. Hammons Convention Center at the Holiday Inn - DIA near Chambers and I70.

The Rocky Mountain Film and Video Expo is designed to showcase cutting-edge technologies, demonstrate new equipment and techniques and provide solutions for the increasingly sophisticated and challenging needs of both creative and business professionals. The Expo provides easy access to over 150 manufacturers exhibiting their latest products, 30 Short Takes presentations on "hot" industry topics and numerous opportunities to network with colleagues and production partners. Last year's event boasted record attendance, and Expo '99 is expected to be even more successful.

Don't miss this exciting event!

For more information, contact Mark Cramer at ExpoMasters, Inc. at (303) 771- 2000, or e-mail him at mcramer@expomasters.com .

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Millennium Certification Project Your Opportunity to Get Re-Certified

Your National Certification Committee met in January for a marathon meeting. While the challenges ahead are many, we are excited about the opportunities to provide you with the tools necessary to bring growth, both certified and non- certified alike. We think we've developed a number of interesting and innovative programs to reach that goal.

Our first initiative is to reach Broadcast Engineers who once held SBE Certification and have allowed it to lapse. That lapse in certification may have been an unfortunate oversight or it may have been intentional, but in either scenario those engineers may now regret that decision. We want to do something about that.

In response to this challenge, the SBE Certification Committee has developed the Millennium Certification Project. This one-time only program will allow Radio and Television engineers formerly certified as Broadcast Technologist, Broadcast Engineer and Senior Broadcast Engineer to regain their Certification without taking another examination.

Each applicant must submit a designated application, which will include a narrative section which details their knowledge and experience in broadcast technology through the past several years. A member of the National Certification Committee will review the application and narrative, applying essentially the same recertification criteria as would be expected of a non- lapsed certification holder. At the conclusion of a satisfactory review of the submitted materials, the applicant will have the previous level of certification restored.

If an engineer once held certification as a Professional Broadcast Engineer and it has lapsed, they will not be able to re-certify as a CPBE. However, under certain circumstances, they can re-certify at the Senior Broadcast Engineering level and then obtain CPBE certification at a later date.

The cost for making application under this special program is $99, which does not include SBE membership. Membership in SBE is not a requirement for Certification, although we certainly expect that many who take advantage of this program will also wish to reinstate their membership as well.

The opportunity to take advantage of the Millennium Certification Project will be very limited--all applications must be received by December 31, 1999. It is up to us to get the word out to our Chapter colleagues and acquaintances. Call the SBE National office at (317) 253-1640 or email lgodby@sbe.org to receive an application.

This Project is the first for the Program of Certification. The National Certification will have more exciting news to share with you as this year progresses. As promised '99 is to be the "year of certification".

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You asked for it... Certification Sample Tests On Diskette

The National Certification Committee suggests that you use this sample exam as guide for your own personal study and exam preparation. The information provided on the diskette is designed to help you identify those areas in which you most need to study.

Categories included are:

SENIOR BROADCAST ENGINEER TELEVISION (10 years of skill) FCC, General, Audio, Video, RF, AM-FM RF, TV RF, Satellite, Microwave, Safety, Supervision and Management

SENIOR BROADCAST ENGINEER RADIO (10 years of experience) FCC, General, Audio, Video, RF, AM-FM RF, TV RF, Satellite, Microwave, Safety, Supervision and Management

BROADCAST ENGINEER RADIO (5 years of experience) FCC, General, Audio, Video, RF, AM-FM RF, TV RF, Satellite, Microwave and Safety

BROADCAST ENGINEER TELEVISION (5 years of experience) FCC, General, Audio, Video, RF, AM-FM RF, TV RF, Satellite, Microwave and Safety

BROADCAST TECHNOLOGIST (Beginning) FCC, General, Audio, Video, RF, AM-FM RF, TV RF, Satellite, Microwave and Safety

Each category contain 4-10 subcategories so that each question is representative of the real world of broadcast and broadcast-related technology. Working engineers on the SBE Certification Committee develop the questions.

About The Exam

The purpose of the Certification exam is to permit you to demonstrate your comprehension of the prescribed body of knowledge for your particular experience level and field of specialization.

The exam consists of 50 multiple choice questions drawn from a file of several hundred questions, ranging from basic electronics to state-of-the-art maintenance problems. All exams are conducted OPEN BOOK, and calculators are allowed.

Cost of the Sample Test (Disk Version) is $25 plus $3 shipping.

TO ORDER CALL (317)253-1640

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Static Line: Noise from all over!

From SBE Chapter 3
Editor: R.W. Abraham

There seems to be little awareness by the public of the introduction of the V- chip in new television receivers. As of July 1, 50% of 13" and larger TV sets offered for sale were required to be produced with the V-chip in place, and all sets of that size must include them after the first of the year.

Few parents could tell you today what the program codes mean. One parent interviewed, thought "FV" stood for Family Values! The content codes are:

S - Sexual content
L - Vulgar language
V - Violence
D - Suggestive dialogue
FV - Fantasy violence in children's programming

To be successful, the codes must be applied uniformly to all programming, which is a problem. Time will tell whether this technology can succeed, or is simply another feel-good mandate forced upon the paying public, "because we must do something." I wonder if "they" ever thought of watching TV with their kids, and talking with them about what's right or wrong with what they have just seen?

In the late 1960s, Gordon Moore, Intel's cofounder, observed that the number of transistors that could be put on a single silicon die was doubling roughly every 18 months. Since then, the industry has managed to stay on that performance curve only by building ever more costly factories. The 33 percent higher chip density Intel is planning will produce significantly faster microprocessors with as many as 50 million transistors, compared with today's 10 to 15 million transistors.

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Clay's Corner Featuring News, Rumors and Views From Usually Reliable and Irrefutable Sources

Clay Freinwald Chapter 16, Seattle

Have you seen the audio patch panel system that makes use of Cat-5 wiring that has become the norm in our plants for Telephone and Computer networks? Many of us have been using this wire for Audio. But up until this time we had no easy way to integrate it into the normal world of Audio. This Cat-5 Patch Panel and a number of accessories make me realize that using Cat-5 as a universal wire standard is possible.

One of the speakers at the NAB this year pointed out an area where a lot of work needs to be done: RECEIVING ANTENNAS. In our area, with relatively low elevation transmitters and very rough terrain, good antennas are going to be critical. The problem is that there is no good measure of what is a good antenna. Work needs to be done to not only determine just how the various antennas perform, but in getting qualified people to install them. This could cause a whole new industry to be born.

One exhibitor really ought to win the unique gizmo award. They were showing petrol powered radios. The booth featured a number of lanterns burning. These are not your typical lantern, but ones that have been modified with a thermocouple on the top generating enough electricity to power the AM-FM-SW Radio in the base (the telescopic whip antenna gave it away) I understand that these are really being built for third world countries that need light and radio at the same time. I was tempted to buy a couple (they are priced at $99 a pair) for use as a conversation piece on the deck this summer. They fit right in with my hand-crank radio I received for Christmas a few years back.

I get the distinct feeling that a lot of Radio Broadcasters, unlike their TV counterparts, are betting that analog will be around a lot longer in Radio.

New Northwest Broadcasters have been adding a station or two every time I go to write this column. This time I can report that they have purchased a couple of FM stations in Anchorage. One of the facilities they already operate under an LMA, the other is a new one in the works. According to Michael O'Shea, as much as half of the programming of the new group's stations will originate in Bellevue. Good news for broadcast employment here, bad for it there. This reminds me of a place where my cousin works in Vail Colorado, where he's an announcer on a number of radio stations around the country all at the same time.

Jim (Lucky in retirement) Stevens suggests that we should take a look at this site to see how the Army is dealing with Y2K:


C.U. Next Month.


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The 'Cantenna' At Lake Dolores

From Chapter 124

The Lake Dolores pirate station reported in the last CGC Communicator newsletter attracted a web photojournalist who went into the desert water park in search of a bootleg transmitting antenna. While no DF bearings were taken, there appeared to be a 5/8-wave FM-band ground plane antenna perched atop a water tank that was painted to look like a giant Coke can! The antenna itself was fastened to the tank ladder. Enjoy the views:

http://home.pacbell.net/kc6onq/ld1.jpg (Entering the Park)
http://home.pacbell.net/kc6onq/ld2.jpg (Getting Closer)
http://home.pacbell.net/kc6onq/ld4.jpg (The Cantenna)
http://home.pacbell.net/kc6onq/ld5.jpg (Cantenna Closeup)
http://home.pacbell.net/kc6onq/ld3.jpg (Just for Fun)

Thanks to CGC Communicator (by Communications General Corporation) to it's Editor . . . Robert Gonsett, W6VR

Special thanks to Tony Dinkel, WB6MIE, Microwave Frequencies Services, Lakewood, CA
As always, Oscar Medina and Gary Stigall always willing to assist

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July 20th, 1999 marked the 30th Anniversary of the lunar landing. To commemorate the event, Neil Armstrong, "Buzz" Aldrin, and Michael Collins arrived at Cape Canaveral together in a limousine. Neil and Buzz joined the day's festivities, and Michael sat in the car.

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Our Kids

From Fred Baumgartner

Charles Sykes is the author of DUMBING DOWN OUR KIDS. He compiled a list of things for high school and college graduates that they don't eem to learn in school. Dave Kaun sent this on... I'm posting it on some bedroom doors..These are some of Sykes' rules:

Rule 1:
Life is not fair; get used to it.

Rule 2:
The world won't care about your self-esteem. The world will expect you to accomplish something before you feel good about yourself.

Rule 3:
You will not make 40 thousand dollars a year right out of high school. You won't be a vice president with a car phone until you earn both.

Rule 4:
If you think your teacher is tough, wait till you get a boss. He doesn't have tenure.

Rule 5:
Flipping burgers is not beneath your dignity. Your grandparents had a different word for burger flipping; they called it 'opportunity'.

Rule 6:
If you screw up, it's not your parents' fault so don't whine about your mistakes. Learn from them.

Rule 7:
Before you were born your parents weren't as boring as they are now. They got that way paying your bills, cleaning your room, and listening to you tell how idealistic you are. So before you save the rain forest from the bloodsucking parasites of your parents' generation, try delousing the closet in your own room.

Rule 8:
Your school may have done away with winners and losers but life has not. In some schools they have abolished failing grades, they'll give you as many times as you want to get the right answer. This, of course, bears not the slightest resemblance to anything in real life.

Rule 9:
Life is not divided into semesters. You don't get summers off, and very few employers are interested in helping you find yourself. Do that on your own time.

Rule 10:
Television is not real life. In real life people actually have to leave the coffee shop and go to work.

Rule 11:
Be nice to nerds. Chances are you'll end up working for one.

Frederick M. Baumgartner
Director of Broadcast Satellite Operations
National Digital Television Center

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Miniature Robots

Chapter 124, Portland

A miniature robot the size of an ant has been developed by three Japanese companies. It weighs only one one-hundredth of an ounce, and moves at speeds of up to six inches per minute.

But that's not all. Each robot has a pair of connectors on both sides that can be linked up with other robots for more extensive assignments. They can then crawl into the tiniest of gaps around bundles of wires or pipes to make inspections and possibly even make repairs. Japanese scientists also plan to develop similar micro-robots with higher speed motors and even more advanced problem detecting sensors.


[Remember the Star Trek Next Generation episode where young Wesley Crusher's miniature robots, called Nanites, got loose after he fell asleep? They ate the ship's memory core and they had to re-boot the ship! - ed]

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"Don't Squat With Yer Spurs On"
A Texan's Guide To Life

By Michael Hill

Crisis management principle: Good judgment comes from experience, and a lot of that comes from bad judgment.

Lettin' the cat outta the bag is a whole lot easier 'n puttin' it back.

If you're ridin' ahead of the herd, take a look back every now and then to make sure it's still there.

If you get to thinkin' you're a person of some influence, try orderin' somebody else's dog around.

Never kick a cow chip on a hot day.

There's two theories to arguin' with a woman. Neither one works.

Don't worry about bitin' off more than you can chew. Your mouth is probably a whole lot bigger'n you think.

If you find yourself in a hole, the first thing to do is stop diggin'.

Never slap a man who's chewin' tobacco.

Always drink upstream from the herd.

Always take a good look at what you're about to eat. It's not so important to know what it is, but you might need to know what it was.

The quickest way to double your money is to fold it over and put it back in your pocket.

Never miss a good chance to shut up.

There are three kinds of men: The one that learns by reading. The few who learn by observation. The rest of them have to pee on the electric fence for themselves.

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PDX Radio Waves

by Michael D. Brown N7AXC CSRE
Brown Broadcast Services,
Portland mdbrown@teleport.com

The FCC's current interpretation of the duopoly rules is often allowing one company to legally own 2/3rds or more of the stations is many small markets. The "hook" usually is a Class C or C1 FM in the station mix whose 70 dBu "city-grade" contour is sufficiently large to overlap with a number of stations far removed from the local market, effectively increasing the market size for duopoly purposes far beyond what it is in practical terms.

It's summer, which means NRSC test time again. The remaining 1 and 5 kW tube- type AM transmitters are rapidly being retired or relegated to standby service at most stations. While cleaner in most respects to their old "grandparents," I've found that the wider output tank circuits in many of the new transmitters makes them more susceptible to the creation of intermodulation spurs. Non-D stations with simple (and wideband) coupling networks tend to be the worst offenders. In almost every case, the formula is (2A + or - B), with A being the client station and B being another signal in the market, usually within 150 kHz of A. A surprising number of stations have never thoroughly checked for these products, (and probably wish they hadn't discovered them after they do!). But then, the audio on these spurs is usually primarily station B - sometimes with a very listenable signal. So, aside from the legal issues, why have your transmitter give your competitor an extra spot on the dial?

Finally, my current favorite application of Murphy's law - perhaps one of the truest of them all:


To estimate the time it takes to do a task: estimate the time you think it should take, multiply by two and change the unit of measure to the next highest unit. Thus, we allocate two days for a one hour task.

(thanks to Andreas Gotz)

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Road Kill

West Virginia and Tennessee recently passed laws allowing motorists to cook and eat road kill... In that part of the country, "SUV" now stands for "Servin' Up Vittles"...

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Some Notable Quotes

"The advantage of a bad memory is that one enjoys several times the same good things for the first time." - Friedrich Nietzche (1844-1900)

"There are three things I always forget. Names, faces -- the third I can't remember." - Italo Svevo

"I never forget a face, but in your case I'll be glad to make an exception." - Groucho Marx

From: Doug Erickson <EMCPRES@compuserve.com >

"If you limit your actions in life to things that nobody can possibly find fault with, you will not do much." - Lewis Carroll

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Half Empty?

Clay Freinwald, from Broadcast.Net

Comprehending Engineers, Take Five

To the optimist, the glass is half full To the pessimist, the glass is half empty To the Engineer, the glass is twice as big as it needs to be!

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The End User

by Richard Jones Chapter 16, Seattle

A virus originating in Taiwan can cause some actual damage to your system. Called the "Chernobyl Virus", this nasty critter was triggered to execute on the anniversary of the Chernobyl nuclear meltdown about thirteen years ago. When activated, this virus was capable of erasing an entire hard drive. Worse, it would also rewrite the BIOS chip (basic input/output system) which, in effect, gives the computer its basic control functions. When this occurs about all that can be done is to replace the BIOS chip or the entire motherboard-- essentially forcing the user to get a new computer.

Viruses are "hostile programs" written for the express purpose of causing damage to other computers. Those who write these programs are doing it to cause as much widespread damage as possible. In fact, there is a subculture, that appears to be somewhat competitive in which "those who cause the most damage wins". Virus detection software is produced by an industry whose purpose is to discover and eradicate these viruses before they cause damage. Many of these companies are credited with preventing rather substantial damage. Companies such as McAfee and Norton Utilities have been very successful in stopping problems before they become too big. Interestingly, much of this software is FREE to use for a short period of time. It's called "shareware", allowing for temporary free use. If the user likes it then he pays full price gaining registration and, possibly, more functionality of the product.

Real Networks, the Seattle-based company that has defined Internet audiostreaming, has released another piece of software called "RealJukebox". This software takes advantage of the trend toward use of MP3. Audio files that can be downloaded over the Internet that are CD digital quality and played back on MP3 players. Many of these players are available for a free download. Music producers and record companies are seriously worried about the future of the music business as this MP3 technology becomes more popular.

Email: richard@serv.net

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We found this Web site through a link from Chapter 17, Minneapolis. This is just a very small sample of the information available on this site.

Sited in Australia, Finland, Japan, U.K., and USA. Frames menu: vertical, horizontal, none.

What are MiniDiscs?

MiniDiscs were introduced by Sony in 1992 as a disc based digital medium for recording and distributing consumer audio that is ``near CD'' in quality. In 1993 Sony announced MD Data, a version of the MiniDisc for storing computer data.

There are two physically distinct types of discs: Premastered MDs, similar to CDs in operation and manufacture, and Recordable MDs, which can be recorded on repeatedly and employ magneto-optical technology. The disc itself is enclosed in a small (7cm x 7cm), convenient, cartridge.

What's New?

7/24: Bob Berardino spots a new price point for MD recorders, Shopping.com's Sharp MD-MS702 is US$130(!) after rebate. // Alex Stenberg has a stylish MD page at bounce.to/md.

7/23: Joseph McLean finds a TWICE article covering Sony's Voice Activated MDX- C8970 car MD deck, you train it by saying the names of your FM stations. He also sends in the Sony MZ-R5ST exploded views and parts list, snarfed from the 1999 Service Manual CD (sadly no longer accessible, but on which we also found the MZ-R50 views and parts list). To readers who managed to find a service manual I missed, I'd be delighted to receive a copy!

7/22: Adam Turner spots Aiwa's AM-HX50 MD player, with 50 hours battery life it is the smallest, lightest and longest running unit yet made. // Louis has made an enthusiastic MD page with several equipment reviews.

7/19: Mark Bausch notes an interesting MacWeek article by Stephan Somogyi on what MD could have been. // Dave Chambers shares his experiences with his Sony MDS-JB930 MD deck. // Ross Harmes has made a site for his 17 labels, one for each of his MD recordings. // Aaron Satz spots low cost MD portable sales, via credit card, and with post paid 1 year warranty coverage at HyperJack, in Osaka. He also finds VIP, a Russian MD dealer and information page.

7/15: Robert contributes a careful review of the Panasonic SJ-MR100 portable MD recorder.

7/13: Jackpot! A reader points out gorgeous PDF service manuals for the Sony MZ-E44/45, MZ-E33, and MZ-R55 (with service mode and self diagnostics, accessed via a magic front panel sequence), the MDX-7970, MDX-5970 and MDX-65, and a new machine, the MDS-SD1 (an MDS-JE520 class machine that mates to an HCD-SD1 CD/Receiver to form the CMT-SD1 bookshelf system).

7/12: Thomas Meier describes how to build a PC interface for a Sharp MD-MS70x machine, allowing you to title (mostly) from your PC.

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By Joe Risse From Chapter 2

Radioscience Observing, Volume 1, by Joseph J. Carr. In this book, the author covers topics including radio astronomy; propagation, whistler and spheric hunting, searching for solar flares using vlf radio, and related subjects Aimed ~ amateur scientists and radio hobbyists, the book provides an introduction to this field with more in depth studies to follow in future volumes. The final chapter was contributed by Dr H Paul Shuch, who contain numerous examples of radio frequencies as a means of learning how to identify them. Published by Prompt Publications, Howard W. Sams and Co, 2647 Waterfront Parkway East Drive, Suite 399, Indianapolis, 46314-2041 Telephone 800-42&7267; price for Volume 1 is $29.95

Audio Power Amplifier Design Handbook, by Douglas SelfNewnes, by Buttersworth Heinemann, 225 Wildood Ave., Woburn, MA 02801-2941 phone 899446-6250, price $34.95. Covers the theory and practice of power-amplifier design this publication covers the field from simple mathematics of the differential pair to the practice of bolting down power transistors without breaking them. Based on the author's 20 years of design experience, it supplies many practical solutions to many design problems. An excellent text for teaching and a key source for design engineer.

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Newsletter Committee

Bill Harris........(303)756-4843 email: bharris4@ix.netcom.com
Garneth M. Harris..(303)756-4843
Andre' Smith.......(303)556-3549 email: asmith@carbon.cudenver.edu

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.