Editing TV and FM DX (section)

==Digital modes==
[[Digital radio]] and [[digital television]] can also be received; however, there is much greater difficulty with reception of weak signals due to the [[cliff effect]], particularly with the [[ATSC]] TV standard mandated in the U.S. However, when the signal is strong enough to be decoded identification is much easier than with analog TV as the picture is guaranteed to be noise-free when present.  For [[DVB-T]], [[hierarchical modulation]] may allow a lower-definition signal to be received even if the details of the full signal cannot be decoded. In reality, though, it's actually much more difficult to get DVB-T E-skip reception as the lowest channel DVB-T transmissions operate on is channel E5 which is 178 MHz. A unique issue observed on [[analog TV]] at the end of the [[DTV transition in the United States]] was that very distant analog stations were viewable in the hours after the permanent shutdown of local analog transmitters in June 2009.  This was particularly pronounced because June is one of the strongest months for DX reception on VHF, and most digital stations were assigned to UHF.