Definition
The Topolná transmitter is a broadcasting facility located near the village of Topolná in the Zlín Region of the Czech Republic. It is primarily used for medium‑wave (and historically, long‑wave) radio transmissions on behalf of Czech public‑service broadcasters.
Overview
The site was established in the early 1950s as part of Czechoslovakia’s effort to expand national radio coverage. Over the decades it has served various programmes of Český rozhlas (Czech Radio), including news, cultural, and music channels. The transmitter has undergone several technical upgrades, including the installation of higher‑power transmitters and the replacement of antenna masts to improve signal reach across the Czech Republic and neighboring countries.
Etymology / Origin
The name “Topolná” derives from the nearby settlement of the same name. The Czech word topol means “poplar,” and the suffix ‑ná denotes a place associated with poplar trees, reflecting the local landscape.
Characteristics
| Feature | Details |
|---|---|
| Location | Near Topolná, 7 km north‑west of Zlín, Czech Republic (coordinates approx. 49°12′N 17°45′E). |
| Frequency | Historically operated on long‑wave 252 kHz and medium‑wave 1080 kHz; current usage is primarily medium‑wave, though exact frequencies may vary with programming changes. |
| Power | Transmitter power has ranged from 50 kW in the early period to up to 300 kW after later upgrades. |
| Antenna system | Originally a single tall mast (approximately 250 m high). Subsequent upgrades added a second mast of similar height to facilitate directional broadcasting and redundancy. |
| Infrastructure | The complex includes the transmitting hall, a transformer station, auxiliary power generators, and control buildings. The site is fenced and operated by Český rozhlas’s technical department. |
| Historical significance | The transmitter was a key element in the dissemination of state radio during the Cold War era and later became an important part of the Czech Republic’s civilian broadcasting network. |
Related Topics
- Český rozhlas – The public‑service radio broadcaster that utilizes the Topolná transmitter.
- Medium‑wave broadcasting – The band (530–1710 kHz) most commonly used by the facility.
- Radio mast architecture – Structural design of tall broadcasting antennas, exemplified by the masts at Topolná.
- List of radio transmitters in the Czech Republic – Other notable transmission sites, such as the Liblice (Medium‑wave) and Příbram (Long‑wave) facilities.
Note: While the existence of the Topolná transmitter is documented in technical registries and radio‑enthusiast publications, detailed specifications (e.g., exact current operating frequency and transmitter power) are not always publicly disclosed. Consequently, certain technical details are presented based on the best‑available information, and "Accurate information is not confirmed" where appropriate.