SDS100/SDS200: SDS100 users in Sweden?

Ubbe

Member
Joined
Sep 8, 2006
Messages
9,698
Location
Stockholm, Sweden
Are there any SDS100-users in Sweden? Interested in frequency sharing and such.
It's pretty much non existing activity for scanner listeners here, and maybe more so in Umeå. There are SDS100 and SDS200 on the auction sites selling for half price when they discover that there's nothing left to monitor. After the Covid-19 outbreak the activity went down to 10% and haven't recovered since, as they have found other ways to communicate that doesn't include radio.

You got an airport there so both civilian and mil air frequencies can be monitored. The 267.000MHz frequency are often in use several times a week. The airport uses Tetra, probably in the 425MHz range, that can be monitored using the TTT software and a SDR dongle.
Then program the usual 444 and 446MHz channels as well as the default frequencies that comes in Baofeng radios, the FMR/GMRS ones, those are often active even if they are not allowed to be used in Sweden.

There's always activity on the truckdriver frequencies 85.9375 and 85.9625 and probably several others in the 68-88MHz range. Let the scanner run in Discovery mode for that frequency range for a week or so, every time when you are not using the scanner. But you'll need a better outdoor antenna for that. Then switch to another range, like 146-173MHz, and run Discovery again and continue with 405-420Mhz and 420-429MHz and 460-470MHz. You probably know all about the analog and digital HAM frequencies and the 69MHz band.

I keep the frekvenslista.com updated with Stockholm frequencies and write time stamps for "last heard" so it easily can be seen what are still active, but don't know if anyone are updating the Umeå part of it. There's also a forum part there but have not been active for a long time. Scanner.nu had lots of forum activity but where closed down when it had info and pictures of military installations and some guys where prosecuted, one got a 1 year sentence and another are still awaiting his verdict. The databases for the forum still exists with lots of useful information but I believe the owner have been advised by the police to not activate the forum again.

/Ubbe
 

sm2wls

Newbie
Joined
Oct 29, 2024
Messages
3
Location
Umeå, Sweden
Hi Ubbe!

Thank you for a very comprehensive answer.
I’ve been a scanner listener since mid 80:s, an a HAM since 1996.
So i’m sadly aware of how the activity has diminished over the years.
Knowing this i still thought a SDS100 would be a fun companion in the shack 🙂
I travel around Sweden from time to time, so if you would consider sharing a database for the SDS100 that would be greatly appreciated.
Bought the waterfall option and think it is a really great little gimmick.
About to try to listen to HAM DMR-repeaters now.
Thankful for any help and inputs.
 

Ubbe

Member
Joined
Sep 8, 2006
Messages
9,698
Location
Stockholm, Sweden
You can use my favorite file for the Stockholm area. My departments for Fria kanaler and Marin and so on are of course the same for the whole country.


Frekvenslista.com (or frekvenslista.se as it has changed to) seems to have some issue with its export to XLS function, but you can select a geographical area to display and then mark everything and copy and then click in one cell in Excel and paste and it will create seven columns. Mark the frequency cells and paste into the first line in Sentinels favorite editor and it will expand enough lines to cover the pasted info. Then mark the exact same amount of lines in Excel for the description and paste into Sentinel. But descriptions are too large so you will anyhow need to edit each one.

You can get frequency information from mobil-radio@pts.se if you state for what area and frequency range and will be free of charge up to 5 pages or something like that. Sometimes you get excel or pdf files as email and sometimes it comes as printed pages in a letter in your mailbox. If you state just one frequency range, like 68-88MHz and wish to have only the TX frequency and owner name and transmitter location then it usually only needs a couple of pages. The files in pdf or text pages has to be converted to text files and then imported in Excel and can look something like this when it comes from PTS: frekvenslistaPTS.pdf

For areas like Stockholms Län it will be wiser to divide up the request to smaller frequency ranges like 420-430MHz and the next day request 430-450MHz and so on to not go over the page limit for each request where it starts to cost money. It's our tax money that pays for the service so it shouldn't be any additional costs but are probably done to prevent us from requesting the whole country and all frequencies. In some other parts of the world they have the whole database accesible from a webpage but not so in Sweden, its a manual process to be done by the people at PTS.

/Ubbe
 
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