GfK Telecontrol AG products have demonstrated their quality over the last 23 years in a variety of countries and studies.
The GfK Telecontrol AG is responsible for TV research in the following countries:
The Telecontrol Mediawatch, the portable meter, is used for both long-term national projects and for limited studies.
Long-term studies with Mediawatch (formerly Radiocontrol)
| Switzerland |
53,000 measuring weeks p.a. from 2001 |
| Liechtenstein |
530 measuring weeks p.a. from 2002 |
| Cyprus |
10,600 measuring weeks p.a from 2006 |
| United Kingdom |
8,320 measuring weeks p.a from 2001-2006 |
| Russia |
10,400 measuring weeks p.a in 2005 |
Time-limited studies
| Switzerland |
150 children in 2001 |
| Sweden, Denmark, Netherlands, Germany |
4 times 360 participants in the Metropolitan Youth Study in 2005 |
| Germany |
4 studies with 640, 960, 126 and 50 participants in 2002/2003/2008 |
| United Kingdom |
4 studies with 1,210, 840, 780 and 250 participants in 2001-2005 |
| Sweden |
2 studies with 560 and 312 participants in 2004 and 2005 |
| Belgium |
550 participants in 2005 |
| Hungary |
450 participants in 2005 |
| Japan |
2 studies 350 and 120 participants in 2003 and 2005 |
| Russia |
640 participants in 2004 |
| Czech Republic |
2,300 participants in 2004 |
| Spain |
1,000 participants in 2003 |
| France |
720 participants in 2002 |
| Netherlands |
300 participants in 2008 |
| Greece |
1000 participants in 2009 |