| City of license | Warsaw |
|---|---|
| Broadcast area | Poland |
| First air date | 2 January 1976 |
| Language | Polish |
| Owner | Polskie Radio |
| Sister stations | Jedynka Dwójka Trójka |
| Webcast | Live Stream |
| Website | PR4 |
| Radio na Wizji | |
|---|---|
| Launched | 18 January 2011 (officially) |
| Owned by | Polskie Radio |
| Picture format | 16:9[1] |
| Country | Poland |
| Language | Polish |
| Availability | |
| Satellite | |
| Hot Bird 8 | 13°E, SR 27500, FEC 3/4, DVB-S/QPSK, 12,149 GHz, V[2] |
| Cyfra+ | Channel 145[1] |
| n | Channel 157[1] |
| Cable | |
| UPC Poland | Channel 787 |
| Toya | Channel 750 |
Polskie Radio Program IV, known also as PR4 or radiowa Czwórka is a radio channel broadcast by the Polish public broadcaster, Polskie Radio.
The Program was started on 2 January 1976 as Polskie Radio Program IV. On 8 October 1994 the station was renamed to Radio Bis. At the beginning, it was a channel for young people, dedicated to sport and science. On 26 May 2008 the station changed its name into Radio Euro, and focused on musical entertainment and sport. On 2 August 2010 the station returned to its original name - Polskie Radio Program IV.[3]
On 18 January 2011, at 11:00 p.m., Polskie Radio Program IV officially started the project Radio na Wizji.[4] It is a television channel, broadcasting as live video feed of the PR4. It's similar project to Italian RTL 102,5 Very Normal People, but the product of Polskie Radio is more advanced.[4]