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1.
(Repeater Term) A condition experienced on VHF and above where a signal rapidly fluctuates in amplitude causing a sound akin to rubbing a stick on a picket fence. If a repeater user's signal isn't strong enough to maintain solid access to the machine's input (such as when operating from a vehicle passing beneath underpasses or through hilly terrain), the signal would be hard to copy because of a pronounced, rapid fluttery or choppy characteristic.
We can't copy you, you're picket fencing really badly.
by IrishRepublicanArmy January 01, 2004

Words related to picket fencing

repeater
 
2.
In competitive forensics, to picket fence is to recieve only scores of 1 (the highest score) in all speech rounds.
Sarah: How did you do at the Jack Howe tournament?
David: I picket fenced it!
by bitterspice May 30, 2005