Czech Republic

End of medium and long waves for the Czech public broadcaster.
Since the beginning of this month, Český rozhlas Dvojka has been broadcasting information about their closure on medium wave.
At the end of this year, Český rozhlas will cease broadcasting on medium wave and long wave.
On this occasion, a warning begins to be broadcast on the AM transmitters of Dvojka radio. It aims to prepare the auditor for this stage. Listeners on Dvojka’s AM frequencies are alerted by a message announcing that the broadcast will end on December 31, 2021.
In the weeks and months to come, Czech Radio will intensify this broadcasting.
Broadcasting in the AM range was very expensive for Czech radio. The director general of the public establishment René Zavoral has confirmed on several occasions that this distribution is of the order of tens of millions of crowns per year.
Dvojka and other Czech radio stations are broadcast in the ČRo DAB + multiplex, on FM and online.


The above text was Google-translated from the original text in French:
Fin des ondes moyennes et longues pour le radiodiffuseur public de Tchéquie.Depuis le début de ce mois, Český rozhlas Dvojka diffuse des informations sur leur fermeture sur les ondes moyennes.À la fin de cette année, la Český rozhlas cessera de diffuser sur les ondes moyennes et les ondes longues
.A cette occasion, un avertissement commence à être diffusé sur les émetteurs en modulation d’amplitude de la radio Dvojka. Il vise à préparer l’auditeur à cette étape. Les auditeurs sur les fréquences AM de Dvojka sont alertés par un message annonçant que la diffusion se terminera le 31 décembre 2021.
Dans les semaines et les mois à venir, la Radio tchèque intensifiera cette diffusion.La diffusion dans la gamme AM était très chère pour la radio tchèque. Le directeur général de l’établissement public René Zavoral a confirmé à plusieurs reprises que cette distribution est de l’ordre de dizaines de millions de couronnes par an.
Dvojka, ainsi que d’autres stations de radio tchèques sont diffusées dans le multiplex ČRo DAB +, en FM et en ligne.

Radios du Monde fb group (2021-09-12) and Svenn Martinsen (2021-09-21)

North Macedonia

The last remaining medium wave in North Macedonia [810 kHz] has failed at least since August 14, 2021. According to gossip from the region, the cause in this case is external.

Accordingly, the transformer station of the broadcasting station Ovce Pole was damaged by bush fires. The repair or replacement of the destroyed system parts is solely in the hands of EVN Makedonija, the responsible network operator.

This would mean that the medium wave would be as good as empty during the day in Thessaloniki as well. The stations on 972 and 1368 kHz, which can still be heard quite well there, are two of the medium wave pirates who are practically permanently active in Greece and ignored by the authorities.
[Google translated from German)
https://www.radioeins.de/programm/sendungen/medienmagazin/radio_news/beitraege/2020/mazedonien.html

Information from Georgi Bancov in Radio Eins Radio-News (2021-09-08)

Canada

A summary of CRTC decisions and on air changes affecting the Canadian radio landscape.

[…]
AM to FM Conversions on the air
MB Winnipeg 92.7 CKJS moved from 810. Operates with 24,000 watts.
Testing – will launch in late September.
[….]

Canadian Radio News fb group (2021-09-01)

Brazil

Quick note on ZYJ-455 Super Rádio Tupi 1280 KHz, Rio de Janeiro
Just to share Super Rádio Tupi, Rio de Janeiro (callsign ZYJ-455, 1280 KHz, 100KW) ceased altogether its transmissions over medium wave effective 23-june-2021.
Before it, Super Rádio Tupi was operating its MW transmitter in daytime hours only. Between 31-may-2019 and 23-jun-2021, the 1280 KHz station was active between 06h and 20h BRST (0900-2300UTC).
Super Rádio Tupi main frequency is 96.5MHz. Audio and studio video are available through digital platforms and paid-TV services. Tupi also has a fair amount of syndicated stations that relay their programming live during football matches.
About a week before its last day on the ether, DXer Carlos Latuff recorded a video of Radio Tupi 1280 KHz airing a news bulletin : https://www.youtube.com/watch?v=B0b8p60jv4g

References:
https://radioamantes.wordpress.com/2019/05/31/super-radio-tupi-passa-a-desligar-seu-transmissor-de-am-nas-madrugadas/

Remarks:
As you may know, Brazil Telecom Authority rolled out the legal and engineering process to allow migration of MW/AM stations to VHF/FM. To handle the sudden and massive need of spectrum, the FM broadcast has been expanded by about 12MHz (from 87.5-107,9 to 76.1-107.9). Reason for the migration include low audience rating and advertisers on MW, increased noise and coverage complains from listeners and the fact most cellphones in Brazil market include only FM band in their embedded receivers*.
* I came to know recently the 2008 Ericson R300-series cellphone did include an AM receiver however it required to plug a very specific and somewhat large headphone adapter to enable it (perhaps ir was ferrite antenna?)
** Not aware of cellphone trends in North America and Europe; but in Brazil the majority of cellphones include FM radio, some even include digital terrestrial TV receiver (SD and HD). Only phones not carrying FM radio seems to be the Iphones and very high end/exec -like Android devices.
*** Before the decision to migrate the FM, Brazil had a few pilots of DRM (Radio Nacional 980KHz) and IBOC/HD Radio (R Globo, CBN, Gaucha, both on MW and FM) but it never got traction. Colleagues I’ve been talking are aware of DAB, but we are still to see any interest for it down here.

Huelbe Garcia, Brasil, to MWCircle iog via WOR iog (2021-08-13)

Canada

Nav Canada decommissions LW and MW non-directional beacons.
NAV CANADA, the country’s provider of civil air navigation services, conducted an aeronautical study that reviewed the requirement for Non-Directional Beacons (NDBs) and Very-High Frequency Omnidirectional Rangefinders (VORs).
The study concluded that given the comprehensive radar surveillance coverage, and the propensity of area navigation (RNAV) with GNSS equipped aircraft, many navigation aids (NAVAIDS) are no longer required and should be decommissioned.
Where a current NAVAID identified in the study serves as an instrument approach aid or anchors an airway segment, NAV CANADA will ensure that a RNAV (GNSS) instrument approach procedure or RNAV airway segment is published, where required, before removal of the identified NAVAID.
Implementation is ongoing and will progress for the next several years. The sixth phase is represented below. Subsequent Notices of Change will be published for each upcoming phase.
See the link for a full list of the beacons.
https://swling.com/blog/2021/08/navcanada-decommissions-lw-and-mw-non-directional-beacons

Mike Terry to Longwaveradiolistening iog (2021-08-12)