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FCC Authorizes All-Digital AM Radio
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Video Description: Implementation of the Twenty-First Century Communications and Video Accessibility Act of 2010
User Report: MPR/APM Build Links With Burk
The author is chief engineer at Minnesota Public Radio.
Minnesota Public Radio and American Public Media are headquartered in downtown St. Paul, Minn. within sight of the state capitol.
It operates 49 public radio stations and 42 translators serving listeners in eight states. MPR delivers three services for broadcast via satellite. The APM program portfolio reaches nearly 20 million listeners each week. Notable programs delivered live include BBC World service, “C24” and “Marketplace.”
During my 10 years with the company I have seen the Gentner/Burk GSC system migrated entirely to Burk ARC Plus Touch, ARC Plus SL and ARC Solo at 37 sites.
Flying on AutoPilot
The decision to continue with Burk for a complete remote control system update was not automatic but made sense. The GSC-to-ARC transition was aided by using the Plus-X GSC Adapter which made transition at many of our sites plug-and-play.
While most of our sites are transmitting facilities, we also have a Burk system installed at our Network Operation Center in St. Paul, which monitors codecs, satellite uplink and downlink, building temperatures and UPS status, and at the Public Radio Satellite Systems (PRSS) NOC in Washington, where our live streamed network contribution is nominally uplinked.
Our St. Paul NOC uses AutoPilot to watch over sites on multiple computers. This gives our NOC operator a machine to use while a member of the radio network team is on another machine remotely. Sites I need to see regularly are best viewed with AutoPilot from my PC. ARC units reliably report to multiple AutoPilot instances. Additionally, the Warp Engine Polling feature minimizes processor load and IP bandwidth on computers running AutoPilot. I am aware of the smartphone options that Burk has but so far have not added that to my device. While we have the relative luxury of a full-time NOC operator, I will probably avoid that.
One of the AutoPilot custom views used at the American Public Media NOC in St. Paul, providing more than 175 status and metering indications from seven sites.Transmitter sites require a primary and backup remote control connection, so most sites still have a POTS line to provide a modem connection in the event of an IP failure. We have recently seen situations where the POTS line will not work reliably with the modem and there are a couple of sites that use the Burk RSI voice interface for backup. Burk works well at sites that use wireless internet as well.
I am a big fan of Custom Views in AutoPilot. One red spot on a screen will stand out even among hundreds of statuses and meters. I have created small custom views for specific purposes, like switching between two transmitters sites or keeping a close eye on equipment experiencing issues.
We are getting more versed at employing SNMP, which is taking over transmitter M and C. Our GatesAir FAX transmitters and Intraplex IP Link codecs get along well with Burk SNMP Plus. Our XDS/ATX-Networks satellite receivers display lock status and Eb/No using SNMP on multiple AutoPilot Custom Views.
In conclusion I can say we are pleased with Burk Technology products and are consistently imagining new ways to use this system.
Radio World User Reports are testimonial articles intended to help readers understand why a colleague chose a particular product to solve a technical situation.
For information about this product contact Matt Leland at Burk Technology in Massachusetts at 1-978-486-0086 or visit www.burk.com.
The post User Report: MPR/APM Build Links With Burk appeared first on Radio World.
Takeaways From the AM Digital Order
Here’s some immediate reaction and followup to the announcement that the FCC will allow AM radio stations to use all-digital transmission if they wish.
THE CHAIRMAN LOVES AM
Ajit Pai hasn’t lost his lifeline affection for radio. In an official statement after the vote, Pai wrote: “Freddie Mercury memorably sang in Queen’s 1984 hit Radio Ga Ga, ‘Radio, someone still loves you.’ Thirty six years later, that remains true; I love radio, as do millions of my fellow Americans. And that love extends to the AM band.”
Pai repeated his frequent praise for stations that cover local events and sports, provide a forum for discourse, offer foreign-language programming and provide information in emergencies. He reminded us that in the AM revitalization initiative, more than 2,100 FM translators are on the air rebroadcasting AM signals, with another 700 pending. “Countless AM broadcasters have told me that their FM translators have given their stations a new lease on life.”
APai said that a transition to all-digital service “presents a singular opportunity to preserve the AM service for future listeners.” He also thanked Ben Downs of Bryan Broadcasting, the proponent of this proposal who hosted Pai at his stations in Texas years ago “and planted a bug in my ear about this idea.”
WHAT WILL BEN DOWNS DO?
Radio World reached Ben Downs this morning as the FCC was set to vote. “I’m glad we had a chance to be a part of this proceeding,” he told us. “David Layer at NAB conducted tests on the system over a period of years and Hubbard’s WWFD was the proof of concept.
“To me it just seemed we needed a slight push to take us to the next step. The FCC staff apparently agreed that this was a well-tested and proven system. Regulator changes never happen as fast as you might like, especially with the burden of Covid, but the FCC staff moved really quickly to get this to today’s vote. The fact it was unanimous shows that the work done was based in solid engineering.”
I asked Downs if he will convert his own stations. “I have two of four that makes sense to convert,” he replied. “My decision tree says that if it’s a full-time station with a backup cross-band translator, then it’s an easy decision to choose to convert. Especially if you’re playing music.
“Two of my AMs have a very good sized footprint and would benefit from being able to broadcast without that noise and narrow bandwidth that defines today’s AM radio,” he said. “And, to the best I can determine, their RF facilities will require only minor adjustments.”
Just how many others will get on board is uncertain. The FCC sounded optimistic, writing that “AM broadcasters overwhelmingly support the proposal to allow all-digital AM broadcasting, as do broadcast engineers; technology companies, and some individual listeners.”
It said that “commenters believe that all-digital operation will increase the format choices that AM broadcasters can offer to their audiences, including the option of music programming (in full stereo if using enhanced mode). Hubbard asserts that all-digital operation will also allow AM broadcasters to provide program and station information along with the main audio stream more reliably than in hybrid mode. Finally, commenters note that the all-digital mode is designed to potentially support an HD-2 second programming stream.”
But Radio World is eager to hear from stations that are planning to make this move anytime soon. Anecdotal evidence has suggested to me that there may not be many stations ready to jump. I certainly have sensed no wave of pressing interest. And comments I have received personally have been doubting or downright negative. Now that the window is actually open, advocates can put their money where their mouths have been.
Email me at radioworld@futurenet.com.
MIKE RAIDE ON THE INVESTMENT
On the topic of what adjustments stations will need to make, Radio World also checked in with Mike Raide of Xperi. We asked him: If an AM station has HD Radio equipment installed, what technical changes and further investments will they need to make now in order to go all digital?
“They will need to make sure their antenna system is capable of handling an HD signal,” Raide said. “The antenna system will need to meet the required bandwidth to properly transmit an MA3 signal. This may require some additional components to properly increase the bandwidth, and some consulting work done by some familiar with AM antenna systems.”
What about stations that do not yet have any HD Radio gear? “They will need to reach out to the equipment manufacturers for the necessary equipment,” Raide replied.
“The required equipment at least would be an exciter or exporter and a transmitter capable of transmitting an MA3 signal. An MA3 signal places greater demands on a transmitter, even more so than an MA1 hybrid signal. A station would have to reach out to an equipment manufacturer to see if their solid-state transmitter is capable. A vacuum tube transmitter is not capable of any digital signal and would have to be replaced.”
On the subject of costs, the FCC wrote this in its order: “We note that all-digital broadcasting places fewer new demands on the transmission system than hybrid operation, therefore minimizing the technical and equipment costs of conversion. Kintronics sets out in detail the system parameters that would be needed for all-digital conversion, concluding that ‘the measures required on the antenna system for many sites will be minor, and the majority of antenna systems should be capable of digital transmission.’ The cost of conversion for AM stations that are already broadcasting in hybrid mode is likely to be minimal. For facilities requiring a major overhaul to accommodate all-digital transmissions, however, the costs will be considerably more.”
The commission noted that Xperi currently offers AM stations a perpetual license to use HD Radio technology with no initial or recurring costs, as we’ve reported.
FURTHER NOTABLE DETAILS
There are extensive technical discussions in the order under headings for nominal power, digital spectrum emission limits, power measurements, use of digital subcarriers, carrier frequency tolerance standard, prohibited interference and remediation procedures, night operation, EAS and other facets.
You can read the order here.
But here are a few notable takeaways:
-All-digital operation will be allowed both day and night.
-There’s a 30-day waiting period before converting to all-digital “so that transitioning AM stations can provide adequate notice to the commission, consumers and other potentially affected stations.”
-The order requires each all-digital station to “provide at least one free over-the-air digital programming stream that is comparable to or better in audio quality than a standard analog broadcast.” Beyond that though, digital subcarriers can be used for broadcast or non-broadcast services, including song and title information.
-Stations will be able to use their additional digital bitrate capacity for broadcast or non-broadcast services, with the capacity varying depending upon the mode of operation. “WWFD initially operated in core-only (reduced bandwidth) configuration while it modified its facility to enable transmission in enhanced mode (greater bandwidth),” the FCC noted. It will permit each broadcaster to select either mode as their situation dictates. (It opted not to require that additional digital data capacity be used only to enhance audio fidelity, particularly stereo audio, as some had requested.)
-Each digital station still must participate in the national Emergency Alert System. The station must ensure that any others that monitor it can still receive and decode an all-digital EAS alert, or adjust their monitoring assignments to receive EAS alerts from another station.
-The commission declined requests to consider Digital Radio Mondiale for AM digital operation, saying there has been no fully developed proposal or testing. “We approve the HD Radio MA3 mode, but do not foreclose the future consideration of alternative transmission technologies.”
-The FCC agreed to use average power of the all-digital signal (including the unmodulated analog carrier power and all of the digital sidebands) to determine whether the station is complying with the nominal power limits set out in the rules. This was a change from its original plan. “We find that this nominal power limit is technically feasible, as demonstrated in the NAB Labs experiments and WWFD’s experimental operation.”
-About interference, it wrote: “Although testing indicates that the digital signals may cause some increased degradation to analog signals, in most cases this will be masked by the noise floor, and in any case there is no evidence that interference will occur within service areas that are currently protected under our rules.”
-The FCC did not impose stricter spectral emissions limits as had been proposed in the NPRM. It said the consensus was that existing emissions limits will adequately protect stations on adjacent channels. Also, “the record indicates that these stricter HD Radio emissions limits may not be set at technically feasible levels and may need to be revisited in light of field data from all-digital experimental operation.” The FCC said stricter limits could hamper deployment of all-digital service but said it could revisit that later.
-The FCC declined to incorporate the NRSC-5D Standard by reference into its rules, for several reasons. Among them: “If we were to consider incorporating by reference the NRSC-5-D standard in the future, we would likely aim for consistency across services, and thus would consider AM all-digital, AM hybrid, and FM hybrid technical standards at the same time.” But it emphasized that it was not trying to undermine confidence in it as a voluntary standard.
-And the FCC declined to take certain other actions that had been urged upon it, saying these were beyond the scope of the proceeding. These ideas included increased enforcement to reduce noise floor levels; the sunset of AM translators; establishing a Low Power AM service; waiving regulatory fees for all-digital AM stations; allocating television spectrum for FM replacement facilities for AM broadcast stations on a primary basis; allowing translator rebroadcasting from an all-digital AM primary station to originate programming; disallowing use of HD Radio hybrid mode; authorizing AM programming on audio-only channels in ATSC 3.0 TV broadcasts; widening the FM band; other AM revitalization-related proposals, such as eliminating third-adjacent channel protections; and receiver standards.
The post Takeaways From the AM Digital Order appeared first on Radio World.
LPFM Station Faces $25,000 FCC Penalty
A low-power FM station in Jupiter, Fla., is facing a whomping $25,000 fine from the Federal Communications Commission — whomping, at least, for most LPFM stations.
The Enforcement Bureau issued a notice of apparent liability against Jupiter Community Radio and its station WJUP(LP).
It said Jupiter operated the station at the wrong power level, with the wrong antenna and from the wrong location; that it failed to make the station available for timely inspection as required; and that it didn’t have EAS equipment in place.
Agents from the Miami bureau found that WJUP was broadcasting from the roof of a multi-unit residential building more than a quarter mile from its licensed site and that it was using a two-bay antenna rather than its authorized one-bay model.
After some problems reaching Jupiter President Wayne Manning, the agents eventually were able to do an inspection and reported that the station also had a transmitter power output of 100 Watts and effective radiated power of approximately 177 Watts, compared to the licensed TPO of 45 Watts and ERP of 20 Watts.
They also said the station did not appear to have any EAS equipment. Manning told them that the EAS equipment was at the studio, which is on the premises of a local church that has its own LPFM station, WOIB; but despite several requests the agents said Manning provided only logs for WOIB, none for WJUP.
The bureau noted in its summary of the case that Manning had sent them e-mails and letters to advise that Jupiter had “turned down” the station’s transmitter, replaced the antenna with the correct model and “taken care of the violations.” But the FCC said none of these included a declaration attesting to the accuracy of its responses, as required by its earlier notice of violation.
Thus it says the station violated four sections of FCC rules. “These types of violations make it difficult for the commission to manage the radio spectrum, to ensure the accuracy and reliability of the technical data in its licensing databases, to fully investigate violations and to ensure compliance with the commission’s rules by entities subject to the commission’s oversight,” it wrote.
“At any time, Jupiter could have cured these violations or could have sought authority from the commission, such as through an application for special temporary authority or an application to modify the station’s license; yet it did not.”
The licensee has 30 days to reply or to pay the fine.
Read about the case here. DA-20-1248A1.docx
The post LPFM Station Faces $25,000 FCC Penalty appeared first on Radio World.
FCC Approves All-Digital Option for AM
The Federal Communications Commission will allow U.S. AM radio station owners to convert their stations to all-digital HD Radio transmissions if they choose to do so.
The commission voted unanimously in favor today at its October open meeting.
Industry observers will be watching to see if any owners large or small take this step. All HD Radio receivers in the market are capable of receiving the MA3 signals; but making this switch would end analog listening on the given frequency.
[Related: Special Report: AM Advocates Watch & Worry]
The order establishes technical rules to protect existing stations from interference. Stations that want to convert will be required to notify the FCC and the public 30 days in advance.
“These stations must provide at least one free over-the-air digital programming stream that is comparable to or better in audio quality than a standard analog broadcast,” the FCC wrote in a summary. “They also must continue to participate in the Emergency Alert System. The order envisions that AM broadcasters will decide whether to convert to all-digital operation based on the conditions in their respective markets.”
The Texas broadcaster who pushed the FCC to allow voluntary all-digital transmission on the AM band has said this would be a “uniquely positive” one in AM revitalization.
Ben Downs, VP/GM of Bryan Broadcasting in Texas, petitioned the FCC in March 2019 to make this move. “The option to convert to all-digital isn’t a magic wand for an AM station, but it is a tool we can use to compete,” he told Radio World today in expectation of the vote to approve. “Those of us with AM stations have been limited to spoken word and niche formats because AM is just not suitable for mass appeal music formats. This changes that fact, and gives us many more options.”
He said there are 70 million radios in the marketplace that will receive AM digital now.
“I’m certainly happy about this. For AM stations that couldn’t find spectrum for a cross-band translator, this is a great option. It will probably benefit large markets with a crowded radio dial that still have the need to compete using an AM signal.”
This change is the latest in a series of “revitalization” steps that the commission has taken to help broadcasters that operate in the AM band, which is troubled by declining listenership, noise and changing consumer habits.
As we’ve reported, three AM stations have received experimental authority to operate in all-digital. Hubbard’s WWFD in Frederick, Md., has actively promoted the format and made presentations about its experiences. Another, WIOE in Ft. Wayne, Ind., experimented but ended its digital transmissions. A third, WTLC in Indianapolis, owned by Urban One, wanted to rebroadcast multicast channels of the AM test signal over FM translators, but the commission didn’t allow that.
The National Association of Broadcasters praised the decision. “Radio broadcasters are grateful to Chairman Pai for championing AM radio during his tenure at the FCC and thank him for successfully implementing policies to help revitalize AM stations.”
The post FCC Approves All-Digital Option for AM appeared first on Radio World.
FCC Chooses C-Band Repack Money Clearinghouse Operators
The FCC has picked the companies to operate the clearinghouse for payments to those affected by the C-Band spectrum repack in the 3.7–4.2 GHz range.
Radio and TV stations will be able to finally recoup costs incurred in changing equipment as the result of spectrum changes and elimination.
[Read: SES Offers Some Answers to Radio’s C-Band Questions]
CohnReznick, an accounting and business services company, will lead with Squire Patton Boggs LLP, a Washington law firm, and Intellicom Technologies, a satellite communications specialist, supporting.
The FCC had stakeholders such as satellite companies such as Eutelsat, Intelsat License, SES Americom and other interested parties such as the NAB, NCTA – The Internet & Television Association, American Cable Association, CTIA, Competitive Carriers Association, and Wireless Internet Service Providers Association, form a committee for the selection process.
The companies will collect claims for the costs from entities such as radio and TV stations and make apportionment decisions for the claimants. It can also resolve disputes.
The post FCC Chooses C-Band Repack Money Clearinghouse Operators appeared first on Radio World.
Shure Launches MV7 Hybrid XLR/USB Podcast Microphone
Shure has launched its new MV7 Podcast Mic. As the company’s first hybrid XLR/USB microphone, the MV7 is aimed at content creators who are involved in podcasting, VO and more. As an entry-level microphone, the MV7 is designed for a simplified user experience, while providing audio quality commensurate with pro users’ expectations, the company says.
An integrated touch panel optimizes control for quick adjustments, allowing users to adjust the gain, headphone volume, monitor mix and mute/unmute, with an option to lock customized settings. Also onboard the mic is Auto Level Mode, which sets gains in real time, so the output levels stay consistent. This enables creators to focus on the content, and not on their mic technique. Auto Level Mode also acts as a virtual audio engineer and adjusts audio levels on the fly, giving audiences a more consistent listening experience.
[Check Out More Products at Radio World’s Products Section]
The microphone works in conjunction with the new, free Shure MOTIV app for desktop, which offers a variety of preset modes. Users can select a tone (dark, natural or bright), depending on if they want a deep “radio” voice, or a crisp and clean sound. These settings are available in Auto Level Mode and can be selected in the MOTIV app. Similarly, users may select their mic distance from the MV7 (near or far), depending on how they are positioned. The Shure MV7 is also certified by VoIP technology developer TeamSpeak.
The mic offers an XLR output for use with interfaces, mixers and professional audio equipment, but also supports a USB-A and USB-C output for Mac and PC. When mobility and on-the-go recordings are needed, the MV7 works with select Android devices. A Lightning cable is available separately for use with iPhones and iPads.
The Shure MV7 Podcast Microphone comes in two colors (black, silver) and is available for US$249.
Info: www.shure.com
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