We got this Estonia guy in the house and he bought in Tallinn this digiboksi that catches both Finnish and Estonian television programs.
Ok, then it might be possible to receive them with T14BR. Check the frequencies and channel parameters from your friends box and post them here. It could be that Kaffeine and w_scan aren't looking within the right frequency range.
On my digiboksi I can get all all the Finnish channels except AVA. When I do same scan using my USB tuner then AVA again isn't recognised. If I re-scan using the digital "plate" antenna then Kaffeine sees AVA. Then, now that AVA is found, if I disconnect the digital plate antenna and connect to house antenna AVA disappears again.
That's very odd. Sounds like you are receiving a different signal source with the house cabling. Are you sure it's not operated by DNA Welho? They broadcast DVB-T in their cable network at Espoo frequencies and probably don't include AVA in that service. Otherwise I can't explain how AVA could be missing from the "A" bouquet.
Are we sure of the Artec being capable of MPEG4?
Absolutely sure. USB DVB receivers are dumb devices -- they don't care what data streams the broadcast contains as far as the link level and MPEG-TS structure is standard compliant. Estonian broadcasts are plain old DVB-T, so any DVB-T USB stick can receive them.
MPEG-2 and MPEG-4 AVC are video coding formats and only the receiving software needs to deal with that part. Both streams are just bits for the tuner and the demultiplexer hardware in your T14BR.
Take a look at salai's screenshot too. He's using a DiBcom 7000PC receiver there, which is either Artec T14BR or a device based on the same chipset as T14BR.
The Artec website doesn't reflect this.
Many DVB-T devices are targeted at UK and German markets where only MPEG-2 is used. The company simply cuts costs by not including a H.264 decoder that would be needed on Windows XP and Vista. H.264 royalties cost a couple euros.
This is also why some companies have an "MPEG-4" model of a device with the same hardware: there's a H.264 decoder included in the software package and a slightly heftier price tag on the box.
P.S. I understand that FInland is moving to MPEG4.
Yes, but it's only used for HD broadcasts in DVB-T
2 (and DVB-C networks). You'd need new hardware for that.