https://www.rri.ro/en/useful-information-en/how-to-listen/rri-2025-summer-broadcast-frequencies-id875223.html
May 5, 2025 - RRI on shortwaves RECEPTION AREAS UTC kHz WESTERN EUROPE 05.30 – 06.00 11,960 11.00 – 12.00 17,630 17.00 – 18.00 13,750 (DRM) 20.30 – 21.00 11,975...
radio romania internationalbroadcast frequenciesrrisummer
https://www.electronicdesign.com/technologies/components/interconnects/article/21784919/hybrid-couplers-handle-broadcast-frequencies
Spanning a 470-to-860 MHz frequency range and capable of handling up to 300W (avg.) with an insertion loss of less than 0.15 dB, the B-style SM hybrid couplers...
hybrid couplersbroadcast frequencieselectronic designhandle