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Messages - redhat

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Shortwave Broadcast / Re: WTWW the truth
« on: November 14, 2022, 0241 UTC »
Anybody professing to provide the truth with only one post to their credit is highly suspect in my book.  I smell a sock puppet!


Get 'em while you can...


RTL Plans 234 kHz Exit for Year-End

French broadcaster cites energy crisis for dropping longwave

By T. Carter Ross ⋅
Published: October 25, 2022

Faced with rising costs and concerns about the environmental impact of energy use, Groupe M6 announced plans for its station RTL to stop broadcasting on longwave by January 1, 2023.

“Faced with the energy crisis, energy sobriety actions were necessary,” according to the station. “Energy sobriety,” or sobriété énergétique in French, is one of the four pillars France’s new energy strategy designed to reduce French energy use by 10% of 2019 levels over the next two years. Specifically, “energy sobriety” is a call to reduce energy consumption.

The broadcaster compared the electricity required for its longwave broadcasts to the average annual energy consumption of 3,000 French people.

This is not the first move RTL has made to address the carbon footprint of its operations. In 2019, the RTL Group announced an agreement with Luxembourgish energy company Enovos to install 23,400 solar panels at its Junglinster and Beidweiler transmission sites in Luxembourg.

The first wave of panels went into operation in 2020 with a second section of solar panels at Beidweiler completed in 2021. Today, more than 29,000 panels at the two sites produce 10.5 gigawatt hours of electricity annually, according to Enovos, making it the largest solar generation facility in the country.

According to Broadcasting Center Europe Marketing Manager Laurent Seve, long-, medium-, and shortwave operations at the 7.1-acre Beidweiler site will be transferred to Junglinster. The towers will be removed and solar generation capabilities will be “progressively extended.”

This work is currently scheduled to occur over the course of 2023. BCE, part of the RTL Group, manages operations at Beidweiler and Junglinster.

In explaining its longwave exit, RTL also stated that listenership to the channel’s longwave broadcasts were “marginal,” in part because support for the longwave reception is less common in modern receivers. RTL urged listeners to tune to the channel’s FM broadcasts or its digital streams via the Internet, apps, or smart speakers. The company also noted it has been “gradually rolling out” DAB+ service since 2020.

RTL has operated on longwave since 1933, broadcasting until 1966 as Radio Luxembourg from transmitters in Junglinster. In 1966, it rebranded as RTL, and in 1972 the station began broadcasting from a new site at Beidweiler with three 290-meter-high transmission towers.

The decision to exit longwave comes just weeks after the German RTL Group, a division of Bertlesmann, announced it would retain its controlling interest in Groupe M6. The company had previously sought to merge M6 with French broadcaster TF1, but in late September the companies abandoned the deal over French competition authorities’ concerns that a combined TF1–M6 would control more than 70 percent of the French free-to-air television advertising market.
RTL was the last remaining French commercial broadcaster on longwave. France Inter ended its longwave broadcasts in 2017 followed by Europe 1 in 2019 and RMC in 2020.


General Radio Discussion / Re: Tour of AM Stereo Station KYET
« on: October 08, 2022, 2217 UTC »
Never seen one blown up from static or handling.  Just saying...


A testing laboratory with NIST traceability, special anechoic chambers, millions in test equipment and specialized antennas.  That's why it costs so much.  From the ouside looking in, it doesn't make sense until you've seen how certification is carried out.


I'll keep your reply in mind the next time I'm looking for a noise source from an unverified Chinese white box good.


Part 15 AM and FM Station Operation / Re: Introducing Parking Lot Radio!
« on: September 30, 2022, 1852 UTC »
Yes.  Getting a transmitter tested for FCC approval can run into the 5 figure category.


I don't know how "huge" this is.  The encoder with the vulnerability is a low-end encoder bought by folks that were too cheap to buy a Sage, and probably don't check their logs anyway.  I believe that the commission revoked the type acceptance to those units years ago, deeming them illegal to use in a FCC licensed station in the first place.


If we're going to go that far, might as well resurrect OIRT's polar FM as well...


General Radio Discussion / Re: Tour of AM Stereo Station KYET
« on: September 10, 2022, 2317 UTC »
There isn't a lot of CMOS in those cards.  Most of it was MC series stuff from the 80's, the rest being discrete TTL stuff.


Another clue is that it occurs day and night.  Signals propagating from afar will not behave in such ways, especially across the HF spectrum.


Huh? / Re: Compromís asks to end FM radio to save energy?
« on: August 13, 2022, 1757 UTC »
I'd love to see the twisted math it took to say that digital modes of transmission use less power.  To this day, the best linear TV technology is 45% DC to RF efficiency.  Analog FM is near 80%, AM is over 90%.
This perversion of 'save the planet' justifying ever encroaching authoritarianism needs to stop, and people need to put their foot down.


Part 15 AM and FM Station Operation / Re: Coax to use
« on: August 06, 2022, 0613 UTC »
I've used the off brand lmr cable with good results.  I've been using off brand half inch super flex on projects lately also without incident.


Part 15 AM and FM Station Operation / Re: Coax to use
« on: August 03, 2022, 0653 UTC »
Agreed.  For runs under 50 feet, lmr240 is fine.  I use it for short cellular jumpers without issue.  Anything longer though, I'd use lmr400.


Nothing new under the sun.  I had an old net-top laptop about a decade ago I bought for the same purpose.  It wound up being a surfing laptop for the garage and the tub.
I'm sure it's arm based to run that low on the consumption end, so don't expect a speed demon.


The RF Workbench / Re: Beyond 45/48m
« on: June 14, 2022, 0247 UTC »
Your not reading again stretchy.  I am talking about 1700v devices with 80mOhm RDSon...not 900v devices at 280mOhm.

The current rig has run up to 10 Mhz.  I have little interest in anything much above that as I don't operate during the day.  Bolt on fet drivers are used to deal with the gate capacity.  I will explore GaN when the price performance ratio gets more attractive.  For now Sic makes more sense in my topologies and power levels.  If they come out with comparable high voltage GaN devices at a reasonable price, I'll consider it.

I like my current approach as it affords high power with a simple low cost PA architecture.  There are ways to get similar power with lower voltages, but circuit complexity, the headache of ferrite, high current losses, etc start to make things unnatractive for my needs.

SiC devices have made what I'm doing possible at much lower cost, and simpler design than was possible just a handful of years ago.  GaN for the moment, does not hold the same advantages.


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