Providing news and views from a broadcast engineers perspective since September 1986
Assuming you are reading this column in 2020 – Happy New Year. Some thoughts about this year:
- Most will pronounce it Twenty-Twenty.
- This decade will be pronounced the Twenty Twenties.
- It’s been a very long time since we had 1919 and it will be a even longer until 3030.
- 2020 is often said describing a person’s vision.
- If you are into Roman Numerals – it’s MMXX.
- 20/20 is an ABC TV news magazine.
- 2020 will be a Leap-Year (quick check your calendar to make sure).
- February this year will have 5 Saturdays.
- It’s been 20 years since Y2K. (Remember that one?)
- 2020 will be a presidential election in the U.S. (good news for broadcasters as a lot of money will be spent on advertising.
The end of a decade is, traditionally, a time to look back. Here are some of my thoughts at this time about events and changes in technology that have impacted many of us.
The Tiger Mountain Antenna Fire –
In all my years in this game, I’ve seen many antenna failures. The failure of the Channel 11 antenna on Capital Hill comes to mind. In that case, they had to go back to their historic site at View Park to stay on the air (I was the last transmitter operator at that old site). The Tiger Mountain event, a year ago, caused six radio stations to be immediately thankful that they had auxiliary facilities – elsewhere. In years past, having this much redundancy would be but a dream. Sadly, in smaller markets, an event like this would have meant much more off-air time. Today, the switching to back up equipment is likely seamless and automatic. Hopefully the owners of those ‘very-mature’ Auxiliary transmitters will see the need to replace them.
Too bad Igor Sikorsky is not alive to witness what has happened to his helicopter! It’s amazing what these multi-bladed little machines can and are doing these days…not just in our business but many others. In TV they are the key to those, long wished for, overhead shots for news, sporting events and, of course, the production of spots. On the technical side, it was a drone, flown by Alex Brewster, that provided close up videos of the fire-damaged antenna at West Tiger, so the manufacturer, far away, could see for themselves what had happened, all of this in a very short time period. Recently, while chasing a source of interference to an FM Station, WSU’s Martin Gibbs deployed his specially equipped drone to fly a circular pattern around the suspected station while recording the radiation pattern of their antenna. The final presentation showed their actual antenna pattern overlaid on a Google Earth picture was not omni-directional as the owner thought and clearly showed why there was co-channel interference. Again, something that would have been impossible without the little drone that arrived on site in a small package. In days past, having a pilot on staff meant someone who could fly a light-plane or helicopter…another great example of how far we have come.
Video Cameras –
Back when I was working in TV, cameras used vacuum tubes to pick up images and where NOT small. Image devices have come a very long way now, producing superior pictures and doing so in very small form-factors. Examples are in the drones. High Definition, broadcast quality pictures it a tiny package that weigh almost nothing. It’s hard to remember how we thought that Image Orthicons and Plumbicons were cool. The picture taking drone would not have been possible without the advancements in imaging devices in recent years.
Vacuum Tubes –
They have served us well for many years. First our Radio and TV studios saw them be replaced with solid state systems.…leaving just the really big ones working in transmitters. The first to make the switch from tubes was AM Radio. Now there are just a few Tubes still working in FM Broadcast transmitters. Likely the reason they are still at work is that many of these transmitters were built extremely well. As an example, when the FM Antenna burned at West Tiger, many of those stations relied on Vacuum Tube transmitters that were 40 years old. Today, as these are replaced, the tube era will go away as well. TV is in the same boat as FM. Today, finding a person that knows their way around vacuum tubes has become rare.
The LED –
Probably one of the greatest inventions of our time is the LED or Light Emitting Diode. They were, at first, used as a replacement for little light bulbs that showed the status of a device. Later, as the technology improved, the LED was being used to replace light bulbs of all kinds. The illumination of homes and business have switched to LEDs as have vehicle head and taillights, traffic signals, tower and obstruction lighting and, of course – Christmas decorations. Lighting our studios has also seen the Lightbulb go away. Gone are those heat producing spots and scoops as well as the air conditioning required. Let’s not forget displays that have become huge. Wonder what Thomas Edison would have thought if he were to stand at Safeco or T-Mobile Park? Dazzling displays, not a shadow to be seen and not a lightbulb in sight!
AM Radio –
Who would have thought that the birthplace of broadcasting would, in many cases, be struggling to survive 100 years later? Despite all the competition for people’s ears, Radio continues to survive, however the portion that is AM continues to shrink. It is rare today to find an AM Station in the top 10 of the ratings. The number of AM transmitter manufacturers has been reduced to a handful. Locally there are exceptions with 710 and 770 recently investing in the legacy band with the purchase of new transmitters. There’s a lot of interest now on changing the modulation scheme from AM to DM (Digital Modulation) as a means of giving consumers what they have come to expect from a radio station. It’s early, and the jury is certainly out, as to whether this will catch on and breath new life into where it all started. One thing to watch in the coming couple of years will be the 100th birthday of many of our AM Stations. Guess the question is whether or not they will be celebrating. Yes, folks, KJR is, according to a recent piece by John Schneider, 100, going on 101.
Bonded Cellular –
Cellular telephone systems have been around for awhile now and have been used by broadcasters for some time, especially in today’s ‘smartphones’. The big change has been the bonding or combining of two or more cellular signals, so that the bandwidth can be combined to equal something that will permit wide-band audio or video to be transmitted. This changed everything. Now you did not need a pneumatic mast and a clear shot to your receiver to transmit audio and video from remote locations. Wonder if anyone, holding one of those Motorola ‘Brick’ cellphones would have even dreamed of this day?
The, Desktop Computer –
Just recently, while cleaning out an attic of a local station, I ran across a P.C. with a label on the front proudly stating that it was a ‘286’ (I’ll have some pictures in a future column). This one featured two large floppy disc-drives! Likely the monitor that was used with it was Green or Amber. Wow, have these devices come a long way. Now we have hard drives with storage measured in Terabytes. Today, everyone has a computer at their desk, and we cannot imagine being without it. Portable machines have some a long way, in a short time.
How we communicate with each other –
Finally, after what seemed like a long time – we were able to come up with a standardized means for computers to talk with each other and computer networking was born. At one time the average desktop PC was a stand-alone device. If you wanted a file on another computer, you transferred that file to a disk and walked over to the other machine and inserted the disk, etc. Early connections for PCs involved devices that would enable multiple machines to share printers…and later, electronically transfer files from machine to machine. (Anyone remember Twin-Ax?) First within a station and later to everywhere. Hard to imagine how it used to be. When I first started writing this column, I was using an Apple II (the MSDOS machine would come later). I would send the completed column to the editor, via a dial-up modem at the blazing speed of 300 baud. Today I compose the column using Word and send it to whomever I wish, almost instantly, via email and the Internet. Who would have dreamed we’d all know what ‘Snail Mail’ meant?
How things communicate with each other –
The same technology that permits computers to communicate with each other has spread, much of our broadcast equipment has become specialized computers. Today, as they say, ‘everything’ has become IP (Internet Protocol). Gone are huge amounts of wiring, replaced by the ubiquitous ‘Network Cable’, along with the now, universal, RJ45 Connector.
Then there is the wireless version, WiFi, Wireless Routers, Bluetooth, and 802.11 systems etc. have all become the norm.
Who would have predicted that the pressure for more wireless gizmos would create a need so big that the purveyors of this technology would ‘purchase’ the needed spectrum from the FCC, and that money would be used to shuffle TV channels, and buy new transmitting equipment, to make room for it all?
The inter-connection that changed it all –
Today our world has been changed, dramatically to the point that most of us are interconnected to each other via that wonderful thing called the Internet. We have watched its capability expand in terms of geography as well as bandwidth and speed. Not very long ago, watching TV meant that you had cable. Then came ‘cord-cutting’ and people were, switching from Over the Air TV watching to the Internet. TVs have changed in recent years to the point that almost all of them are what are called ‘Smart’, meaning that you can watch OTA TV, TV via the Internet or look for whatever via your favorite web browser. New to a lot of people in 2020 will be the discovery of the Antenna. The concept of Free TV is foreign to many!
How we communicate with equipment –
In the past, equipment all came with a ‘Control Panel’ in some form. Knobs, buttons, switches, meters etc. The tools of the trade were your fingers and the famous little green screwdriver. Today, as more and more equipment has become computer based, operation of equipment requires the use of a keyboard, mouse (or trackball) and perhaps a touchscreen. I recall one the transmitter manufacturers, reluctantly putting a power output meter on the front of their transmitters out of fear that no one would buy one without it. Unfortunately, those that design some, rather simple equipment, no longer employ designers that knew how to adjust things with that little green screwdriver, when that approach would have been much simpler.
How we store stuff –
Way back in the dark ages, we would record audio and video spots and programs on reel-to-reel tape which was stored in the station’s ‘library’. That’s all gone as these things are now stored on Hard Drives with capacities that were science fiction not that long ago.
The Cloud –
As the required amount of computing storage and hardware for each station became bigger and bigger and more expensive, along came a solution called “The Cloud”. I guess that name clicked because it meant ‘out there somewhere’. Today, many of the big names that own data centers (Microsoft, Amazon etc.) have created these huge facilities full of computers called ‘Data Centers’ that provide the required computing horse power and storage required by broadcasters (and everyone else for that matter). As time goes by, more of this will take place. Perhaps to the point that the Local P.C. will only have minimal capability leaving all the heavy lifting to the cloud. Perhaps you are already using what Microsoft called ‘One Drive’. If so, you have some of your files’ In the Cloud. Who would have predicted that many locations in the out-back of Eastern Washington would see the giant buildings be constructed?
Wow – I could go on and on with this.
So where is this all going to go in the next decade? Certainly, everything will continue to become computer based. Bandwidths will continue to increase. 5G will become a reality, with broadcasters making extensive use of it. The Vacuum Tube will become but a memory. The curve of technological advances will continue to become steeper and IP will become as much of a standard as 60 Hz AC Power. AM Radio (no tears please) will continue to decline overall (yes, there will be bright spots) with the total number of stations declining to levels of yesteryear. FM Radio will continue to duke it out for the ears of one place where the medium still reigns, the automobile. TV will continue to be a major factor, thanks to our love for sports and the ability to display it on a large screen. Next Gen TV will be tough, not for what it can do, but for the lack of knowing how to do it. Many times we have created something, because we can, not because of demand for it. Certainly the jury is out. Jobs in broadcasting will continue to offer exciting opportunities. Just that staffing levels will never be the same as yesteryear. Oh yes, we will almost certainly have more cyber attacks. ☹
As I look back at almost 60 years in this game, I have to conclude it’s been a great ride. I also have this feeling that I have been in it at just the right time. Whether anyone will take on the challenge of writing a column like this…only time will tell. I’ve ended up being, mainly a transmitter guy, even though I did not start out that way. It’s nice, as I am largely working on my own, doing what I love. As long as there is wireless, there are systems that will break and have to be repaired. Certainly, what’s known as ‘component level repair’ will, if it has not already, disappear. I don’t know many that have an interest in doing what I have been doing for all these years. ‘Twas said, ‘There is nothing more constant than change’. Attending a meeting of my peers I see a ‘sea of gray hair’ with a few bright spots (those that still have hair) and I am reminded of how things appeared many years ago. It’s all a cycle, and the cycle repeats.
My readers know that I often talk about the weather…perhaps because this was one of my hobbies when I was a kid. One thing about this neck of the woods, there is never a lack of something to write about. This year, what’s on my mind this past November is how dry the weather had been. I was remarking to some friends over breakfast on December 2nd that it would have to rain about 10 inches in December to get our precipitation total up to normal.
According to those that accurately track these things, this past November was the driest since 1976 with only 1.71 inches in the gauge. That’s about 75% below normal. November is supposed to be one of our wettest months. Extend this and our snow-pack will be impacted and that could spell a lot of trouble. In early December that was running less than 50% of normal.
Mother nature has a way to deal with situations like this. This is why there are often great differences between ‘Weather’ and ‘Climate’. This December has been a great example of how that works. Suddenly, about mid-month, we were hearing terms like ‘Atmospheric River’ and without further delay the skies opened up and the Monsoons were well underway. Now we were hearing familiar terms…like Winter Storm warnings for the mountains, Flood Watches etc. As the rains continued, we set all-time records for amounts of precipitation, following by warnings for flooding and landslides. Suddenly that dry period was ‘washed’ away in our minds to the point that the natives were complaining about the amount of rain.
Some of the interesting records set:
The gloomiest day in 20 years. U-Dub, apparently, tracks the amount of solar energy reaching the ground. For those of you that have solar-panels, it was a bust. In addition, this was the Winter Soltice making it the shortest and darkest day.
December 20 was the fifth rainiest day ever! Seattle recorded just over three inches, while some areas got over four. The rain-shadow of the Olympics, once again, did it’s job with some locations there only getting an inch or so. Seattle was actually wetter than Forks!
Now that is some kind of record.
Looking at the Sea-Tac totals on Dec 20th:
- Thus far in December 6.33 inches
- Total since January 1 – 32.25 inches
- Normal – 35.66 inches
Bottom line – Even after all of this we are still below normal!
Then there is the issue of the amount of rainfall that people all over think we get. I recently ran across a survey of 50 Cites in the US that were to have the most rainfall in 2019. I’ll bet those that saw the same thing were looking for a city in this area…Sorry folks , we aren’t even in that list.
To help put things into perspective – Utqiagvik (previously known as Barrow), Alaska is in the midst of winter and having to deal with 67 days of darkness!
Cyber attacks continue to make the news and broadcasters continue to be victims. Recently KHQ-TV in Spokane was hit. One of their spokespersons said the attack targeted the software they use to prepare newscasts for all the stations in the Cowels group. Reportedly, the station informed their viewers they were having technical difficulties that impacted their ability to air graphics and video their viewers were used to. This caused the news to be presented the way it used to be handled prior to becoming dependent on computers. This made doing weather forecasts a challenge. Wonder if they had to call some folks that had long retired to figure out how to do things? Reading off of paper on live TV – Yikes!
Meanwhile, Entercom was hit by a second cyber-attack. Rightfully, the big radio company has not released much information about this one, so as to not encourage anyone. Apparently, the impact of this one was not as severe as the one in September, indicating the attack was different or their countermeasures were working. According to published reports, Entercom lost millions in the previous event, which may help explain why they have been shedding staff and not making capital investments.
The dependence on computer systems in today’s broadcast stations is….looking for the best word….almost ‘complete’. With today’s graphics, computer driven teleprompters and content on servers, it would be interesting to see how today’s news anchors would deal with typed pieces of paper on the desk in front of them. Without computers, today’s radio would be a bit better off as the mass scramble could not be seen.
I had a recent Ransomware experience at KVTI in Lakewood. In this case, the perps got to one of the PCs in the on-air studio that’s only used for research and communications. In this case, it was a simple matter of quickly replacing the stand-alone computer while the victim was taken to the shop to be ‘dis-infected’.
One target of ransomware are government entities. In some cases, some have actually paid the perps to get their systems back up and running.
The following picture was sent my way by an old friend who gets to see sunrises I don’t, as all my views are to the West. Thanks Neil!
It’s always sad to write about the passing of someone you knew. In this case, the unexpected passing of John Lyons at age 71, who was famous for his work with transmission facilities in New York City. The loss of the Twin Towers on 9/11, 4 Times Square, The Empire State Building and One World Trade Center are all broadcast transmitter facilities that have his name all over them in his role with the Durst Organization.
I would meet and chat with John at various NAB and SBE functions over the years, where I always found him to be easy to talk to, with a warm and quick sense of humor. He was a Fellow of the Society of Broadcast Engineers. NYC lost a giant in our industry.
Another passing to note, listed in the Silent Key column of the most recent QST was Phil Ferrell, K7PF. I first got connected with Phil back in the 70s when I was involved with Amateur Radio Repeater frequency coordination. Phil operated one of the first 2 meter repeaters in the area on 146.88, then known as ‘The Seattle Repeater’. He and his wife, Joni, were very good to me. He knew I was in broadcasting and loved to tease me about ‘patch cords’ (for some reason). His educational resume was most impressive – B.S. Physics, 1955, CalTech; Professional Engineer, 1966, state of Washington; PhD Electrical Engineering, 1970, University of Washington. Perhaps the only person I’ve ever known with a PhD in EE. He retired from Boeing in 1993. According to QST, he resided in Auburn, which was news to me. QRZ still shows his Port Ludlow address. Phil was 86.
Recently, several changes at the Federal Level caused EAS participants to have to perform upgrades to their EAS Equipment. In some cases, several hundred dollars were spent in the process. Whereas the FCC required that this upgrade be done, broadcasters had no choice but pay the price. In some cases, those that own and operate this equipment are not broadcasters but government entities that have to fund it.
Then there are some special circumstances. One of which is the Seattle Weather Forecast Office (WFO) for NWS. Many years ago, the Washington SECC, set out to fully integrate NOAA Weather Radio (NWR) into our area’s EAS system. In the end, NWR/Seattle, in many ways, looks like a radio station. In their case, their ‘programming’ comes from the computers that generate weather forecasts and warnings. Their ‘transmitters’ are the various NWR transmitters in the region. In Seattle, the local transmitter is KHB-60 on 162.550 which broadcasts from Cougar Mt., co-located with broadcasters. The beauty of this system is that a person with a NOAA Weather Radio will receive, not only Weather Warnings, but all EAS warnings as well.
The EAS equipment at the NWS has all been donated, as there is no funding for this system via NOAA, as this is the only place in the U.S. with this arrangement. (Sometimes called the Seattle Experiment) Much of the labor was performed by the late Jim Tharp and continues to this day thanks to the efforts of Lowell Kiesow.
When the time came to update the EAS equipment for the Seattle WFO – we had a situation that was unique – State Emergency Management could not fund it as they are prohibited from funding something used by a Federal agency. The NWS could not fund it as it is, technically, not approved for it. This meant that for the system to continue, a volunteer source of funding was needed.
I am, abundantly pleased, to announce that the required upgrade was – DONATED by Broadcast Supply Worldwide (BSW) in Tacoma.
I want to publicly thank the management of BSW for their donation and support of our Emergency Alert System in this area. Next time you are shopping for broadcast equipment, and in the process, contact BSW and please take a moment to thank them for their contribution.
I am proud that many, across the country, continue to point to Washington State as an example of what EAS can do. It is through voluntary contributions of time and materials we have been able to achieve so much.
Before I leave this topic , if you would like to join our team, we’d love to have you. You are welcome to attend the next SECC Meeting, Tuesday, January 14th at 9:30 a.m. at Clover Park Technical College in Lakewood, or you can call me or send me an email for all the details.
The FCC recently announced some – huge – fines related to some unlicensed radio stations. Radio TeleBoston was fined $453,015 and Radio Concord $151.005 due to them apparently ignoring warnings to halt their unlicensed operations. Now the big questions –
- Will they actually end up paying the fine?
- Will they claim the don’t have the funds and end up paying a fraction of it?
- Will then simply not pay anything and get away with it?
I will start believing the FCC means business when –
- They actually collect the fine amount.
- The pirate operators start spending jail time.
WWFD in Fredrick, MD continues making news with their operation as an All Digital station on 820. A lot of eyes and ears are on this experiment of turning off their AM signal in favor of running all digital.
For some in depth information on this operation, check out recently issues of Radio World and Radio World Engineering Extra.
Some of the highlights are –
- The station, despite not being able to be received by an AM Radio is, attracting enough listeners to show up in the local Nielsen Ratings.
- The FCC has renewed their Special Temporary Authority (STA) to continue in this mode.
- The Commisson is asking whether this should be a permitted mode of operation by issuing an NPRM (Notice of Proposed Rule Making).
There are a number of things a digital only AM can do that a conventional AM cannot –
- Operate in Stereo (Granted you could run the old AM Stereo system).
- Offer relatively noise free reception.
- Broadcast the visual content that, today, is only offered by FM-HD stations meaning Song Title and Artist information and Album Art.
The only down side is the station cannot be received on a standard AM Radio. Perhaps the bottom line will involve some simple math. Will the ability of an ever increasing number of digital receivers, coupled with the fact that to a consumer an all-digital AM have the same look and feel as an FM or FM band HD station, overcome the fact that legacy AM receivers will not be able to ever hear the station?
Up until the development of Digital TV and HD Radio, the FCC had been very concerned about reverse compatibility. Since that time, this has not been a stumbling block to gaining FCC approval. Perhaps this is underscored by the fact that they are willing to issue an NPRM?
The other major factor is that the FCC has been pressured to do something to save AM Radio. Their reaction has been a number of rule changes and, of course, the ability of an AM to put on the air an FM Translator. It’s interesting to note that WWFD was one of those AMs that constructed an FM Translator, whereby they concluded that most of their audience had switched to their FM translator that helped pave the way for them electing to experiment with changing their AM to all-digital.
The question that comes to mind is how many other AMs are in the same boat and how many of them will figure there is little down-side to changing their AM to all digital. My guess is that this is a question that’s being asked by many.
Another potential candidate for digital AM are those AMs that are part of a larger cluster of FMs that are supporting the AM, without whose support would likely go off the air. These groups may see the conversion of their AM to digital attractive.
The impact of this on in-home listening will likely be minimal (except for those that still have an AM radio in their kitchen). Today most in-home radio listening is via a ‘smart speaker’ that’s not really a radio in the conventional sense, but rather a device that can play the stations streamed programming.
Finally, will we see a digital AM in our area? I hope so …I’d love to personally be able to see how well it works.
Oh yes, what about Canada. Will we, one day, see this spread across the border?
A fascinating time, indeed.
Indeed ‘Smart Speaker’ has become a fixture in many households. My grand daughter was the first one in our family to have one…and to her surprise, it was also a radio. Broadcasters were often caught off guard with these devices and scrambled to come up with means for dealing with them. Radio is still not the major use of these gizmos…however the trend is certainly upward, which is good news. As I pointed out earlier, this is today’s in-home radio…and so much more.
In today’s world the term ‘on-demand’ is the key. It used to be that you had to look up a program schedule in the newspaper to find out when, what you sought, would be on a radio or TV station. Today, we have come to expect what we want – WHEN – we want it. The key to making all this work is, of course, the computer networks of today that give us our connected world.
For those of you that long for the look of a classic, in home, table top radio, I recently ran across this item:
Rerii Handmade Walnut Bluetooth Speaker
Even the old-school holdout can join the modern world with this wireless speaker that pairs with smartphones, tablets, and other Bluetooth-enabled devices. But it still receives AM/FM radio stations, and the carved walnut case makes it look like a long-treasured heirloom.
I love it! You can have one for $60 from Amazon.
For those of us that are involved with towers, news of a tower failure is something that gets our attention. Recently a 500 tower in Northwest Nebraska came down due to a heavy ice storm.
The tower supported an antenna for KQSK…as well as the National Weather Service.
A pretty steady stream of news about C-Band. But let’s not take our eyes of what’s called mid-band. The NAB has warned the FCC that permitting unlicensed users on the 6 GHz band can still interfere with electronic news gathering.
Looking for a job in Radio? Here are a couple of openings that might interest you:
- DETROIT – Crawford Broadcasting is seeking a chief engineer for their Detroit cluster of stations – One FM, 3 AMs and 2 Translators. https://crawfordbroadcasting.com/careers/
- MILWAUKEE – Good Karma Broadcasting is looking for a chief engineer. firstname.lastname@example.org
The FCC recently announced they were allocating $17.2 Million of reimbursement money for FM stations that were impacted by the TV channel Repack program. Understand there were 87 FMs effected. To my knowledge, none in this immediate area.
HD Radio continues to grow in this area…a very different situation in smaller markets, however. Here many Non-Commercial FMs are running HD. Recently Latino broadcaster, Bustos Media joined the ‘HD Radio Club’ with the purchase of 102.9 which transmits from Capital Peak SW of Olympia. Not long afterward, KZTM added an HD-2. Bustos has been growing rapidly in recent years. Here is what they have in Western Washington:
From Capital Peak, SW of Olympia – 102.9 – KZTM-FM and HD, KZTM HD-2
From South Mountain, West of Shelton – 99.3 – KDDS-FM
From near Mt. Vernon -103.3 – KZNW-FM
From Auburn – 1210 – KMIA (AM)
I understand another station may become part of this group. Perhaps some news for next month?
Work is progressing on the new studios for KING-FM in Seattle. Due to the sale of their present home at Queen Ann and Harrison (just west of Key Arena) they are moving around the corner and down Mercer, where they will be in the same building at the Seattle Opera.
Here you can see Mike Brooks (on the right) working in what will be the new KING-FM on-air studio. The new consoles are all Wheatstone. This will spell the end for one of the last PR&E consoles in this area.
Here’s an early view of the KING-FM ‘Rack-Room’. Lots of empty space at this point that will be filled with equipment.
For a number of years, KING-FM has been operating HD Radio from their facility on West Tiger, using a mode that is a bit unique. They are transmitting with HD Radio power levels that are different than most, in that their HD Power level is higher on one side of their FM than the other.
A process called Asymmetric Sidebands. They’ve been doing this via what’s called a Special Temporary Authority or STA (Similar process to the AM running all digital I wrote about earlier).
Now the FCC is being formally asked to move this from a mode requiring an STA to something permitted by the NAB, NPR as well as Xperi, the digital radio developer.
Whether or not a station can operate with asymmetric HD sidebands is determined by the proximity and coverage of adjacent channel stations. It’s likely many stations would wish to do this, if it were an outright permitted mode of operation as it would increase their digital coverage. (The reason KING-FM opted to do this several years ago.)
Late news – Xperi, the outfit behind HD-Radio, has agreed to merge with TiVo, creating a company worth about 2.24 Billion Bucks.
The following is in an interesting chart showing the growth of HD Radio over time from Xperi:
Have you been keeping track of Sun-Spots? If you are like most, the answer is probably no.
If you are a Ham Radio operator that operates on what are called the ‘HF Bands’ the answer is likely yes.
Our nearest Star (we call it The Sun) operates in a cyclical manner. That every 11 years it varies between being active (producing a lot of sun-spots) and quiet (having very few). Presently the sun is in the midst of a very deep, if not historic, solar minimum…the quietest period since 1913. This impacts radio propagation on the AM Broadcast Band as well as the spectrum immediately above it (where many Hams operate). These 11 year cycles are also tied, by many, to weather conditions and other events. Many years ago, there was a very long period of solar minimum that was thought to have contributed to a cool-down period.
The follow graphs shows these cycles and where we are now:
One final note of interest, the year 1913 cited earlier for its lack of sunspots on the order of 311 days was a year filled with wild weather extremes including the hottest temperature ever recorded on Earth in Death Valley, CA.
There is a local connection keeping track of solar activity. Tad Cook, K7RA posts a great deal of information on the ARRL Web Site. Visit http://arrl.org/propagation-of-rf-signals the ARRL Technical Information Service, read http://arrl.org/the-sun-the-earth-the-ionosphere “What the Numbers Mean.
Old friend, Donn Harvey, has a good idea of my sense of humor and appreciation for certain things and submitted the following –
According to the records of the NWS, Seattle has a 5% chance of having a White Christmas.
Just for the record…Here’s a picture of West Tiger on Christmas Eve 2019:
That’s about it for this month, my friends.
Hope you had a wonderful Holiday Season and may 2020 be the best yet.
Lord willing, I will be back to most of the same locations next month at this time.
Until then –
Clay, K7CR, CPBE
SBE Member for over 50 years, #714