I was trying to pull up an old post of Ermi Roos that was originally at http://www.part15.us/blogs/ermi-roos/earliest-radio?page=1
It's where he posted a response of former FCC Chief Engineer of the Technical Rules Branch that laid out the history of part 15 AM (I had highlighted that discussion years ago at https://part15lab.blogspot.com/2017/01/origins-of-part-15-closer-look-at-15219.html - which is where I got the link)
The Internet Archive doesn't appear to have that page archived, so I altered the link by changing only the "part15.us" to the present "part15.org" - thinking it was still archived here, but the page it pulls up really surprised me.. it's not Ermi Roos and it's all in Spanish!:
http://www.part15.org/blogs/ermi-roos/earliest-radio?page=1
It's apparently a redirect and something about a part 15 station called “Radio Echo One”
I isn't Spanish.. It's Italian, here's a translation of his post:
January 19, 2021 by radioyoganetwork
From the experience of (literally) Radio YOGA NETWORK comes “Radio Echo One.” Yoga Network remains Yoga Network, Literally Radio becomes “Radio Echo One,” shortwave pirate
Low-power devices and short-range devices (SRD) for free use.
This category includes low-power devices that use collective frequencies, without any protection, for very short-distance connections, installed and used for the purposes referred to in Article 105 ("Free Use"), paragraph 1, points a) to o) of the Electronic Communications Code. For these uses, neither general authorization nor the Declaration referred to in Article 145 of the Code are require.
“Radio Echo One” is a member of the “Part15” community, meaning “low power, unlicensed, legal radio.” In fact, “Radio Echo One” broadcasts at 100 mW. Of course, you can listen to “Radio Echo One” worldwide via streaming at http://104.167.2.55:8081/index.html (click “Listen”).
For information, please contact [email protected]
his post was also a link to rhe "Ministry of Business and Made in Italy" government website which details Italy's Low Power Rules. Here's some of the info as translated:
Low-power devices and devices for very short-distance connections to short-range devices, including Short Range Devices (SRDs)
This category includes radio equipment that uses collective frequency bands, without any protection from interference.
The use of such radio equipment is regulated by the Electronic Communications Code and can take place under a general authorization regime (Article 104 of the Code) or under a free use regime (Article 105 of the Code) on the basis of the technical characteristics and frequency bands defined pursuant to the national frequency allocation plan (decree of the Minister of Economic Development of 5 October 2018).
In fact, the decree of the Minister of Economic Development of 5 October 2018, which approves the National Plan for the allocation of frequencies between 0 and 3,000 GHz, aims to establish the allocation of the frequency bands covered by the plan to the various services , to indicate for each service within the individual bands the government authority responsible for managing the frequencies, as well as the main civil uses.
Low-power devices and Short Range Devices (SRD) subject to general authorization
These are radioelectric devices that fall within the general authorization regime pursuant to Article 104, paragraph 1, letter c) number 2 of the Code.
These are the devices that have the technical characteristics and use the frequency bands defined in accordance with the national frequency allocation plan and which, therefore, can be used for the services indicated in points 2.1 to 2.8 bis of the aforementioned Article 104 of the Code.
This category includes, in particular, low-power, short-range professional radio microphones; equipment used to assist road and rail traffic and transport, road safety and rescue workers, traffic surveillance, etc.; equipment used to assist industrial, commercial, artisanal, and agricultural activities, including entertainment or broadcasting, etc.
To obtain general authorizations, interested parties are required to submit a declaration ( certified notification of commencement of activity - Scia) and pay the fees listed in Annex 25 to the Code. The fees are based on the number of devices used and are divided into a one-time processing fee and an annual fee for surveillance and maintenance.
To submit the declaration, the relevant forms are available in the forms section at the bottom of the page.
Low-power devices and free-to-use Short Range Devices (SRD)
These are radioelectric devices that fall within the free use regime pursuant to Article 105 of the Code.
These are devices that meet the technical specifications and use the frequency bands defined in accordance with the national frequency allocation plan and can therefore be used for the services indicated in Article 105 of the Code. For such devices, no administrative and/or contribution requirements are required for the owner.
This category includes, in particular, citizen band communications equipment - CB and PMR 446 equipment , for which no administrative requirements or payment of contributions are required pursuant to Legislative Decree no. 76 of 16 July 2020 (the so-called Simplification Decree).
Communications via CB and PMR 446 devices are permitted to citizens who meet the requirements set out in Article 145 of the Code.
___________________________
It is useful to remember that if the use of radio equipment on the market requires general authorization, pursuant to current legislation, this information is made available on the packaging and must be completed in the instructions included with the equipment. To this end, the packaging of such equipment clearly and legibly displays the pictogram 
followed by the abbreviations of the EU states where restrictions on use or authorization requirements exist.