NIA officials recovered the wireless set while scanning the area for evidence and clues in connection with its probe on the terrorist attack at the Air Force station, official sources said.
The equipment has been sent to Central Forensic Science Laboratory (CFSL), Chandigarh for analysis, they said.
Meanwhile, questioning of Salwinder Singh, a Superintendent of Police-rank officer, continued for the third day at the NIA headquarters.
The NIA had also summoned Somraj, caretaker of Panj Peer Dargah in Punjab, which Singh had claimed to have visited before he was kidnapped by terrorists who attacked the Pathankot Air Force base hours later.
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Somraj will be joining probe tomorrow, they said.
The shrine is located a few kilometres from Bamiyal, the village from where the terrorists were suspected to have infiltrated into India before mounting the attack.
Six terrorists had attacked the Pathankot base during the intervening night of January 1 and 2. They were killed during a counter-operation by Indian forces that lasted for about three days in which seven security personnel were killed.