pinguin6218, It basicly means that the signal is filtered 2X to reduce noise that would other wise cause interferance with the RX. This type RX also needs to be used with a Dual Conversion Crystal If you like to read, Google [Gold Label Narrow Band FM Tx/RX]. This was the new standard as of I think 01/01/1990. Oh yea the good old days.
Subject: Dual Conversion Receiver 
Wed Sep 23, 2009 8:05 am
