In particular, DAB depends on exact time synchronisation to avoid interference. Every transmitter in the country has to broadcast the same OFDM symbol at the same time.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Single-frequency_network" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Single-frequency_network</a><p>The kit is supposed to accomodate loss of GPS, but evidently doesn&#x27;t handle error so well: <a href="http:&#x2F;&#x2F;www.microsemi.com&#x2F;products&#x2F;timing-synchronization-systems&#x2F;time-frequency-distribution&#x2F;gps-instruments&#x2F;4370a-dvb-sync-source" rel="nofollow">http:&#x2F;&#x2F;www.microsemi.com&#x2F;products&#x2F;timing-synchronization-sys...</a>