/technologies/wireless/b/blog/posts/frequency-hopping-fm-radio-broadcastsIf you&#39;ve ever listened to a weak FM radio station in an urban area, you have heard fading due to interference between reflections from buildings. Fades that cause the signal to drop 10-20dB are common in an urban environment, but they&#39;re only...en-USTelligent Community 12https://community.element14.com/technologies/wireless/b/blog/posts/frequency-hopping-fm-radio-broadcastsFri, 14 Jun 2013 07:41:29 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:30a313f8-89c1-4cfc-a6cd-d7be0f6667d6M0DCD0<p>There is some degree of frequency agility delivered in the RDS data stream for the alternative frequency facility. This may be a particularly European solution, but does actually work pretty well with a single antenna, notably car radios. Not many portbale radios have this feature, but there are some smartphones which are able to handle this as well, notably useful when listening on Public transport. It&#39;s not really frequency hopping in the true sense, but does allow reception to switch intelligently between sources, but does allow uninterrupted listening on long car journies from the national stations, particularly the BBC in the UK.</p><img src="https://community.element14.com/aggbug?PostID=16367&AppID=5&AppType=Weblog&ContentType=0" width="1" height="1">