Philips Semiconductors
Decoder for traffic warning (VWF) radio
transmissions
Product specification
TDA1579
TDA1579T
Fig.2 BK signal voltage at pin 5 as a function of
frequency.
Fig.3 DK signal voltage at pin 15 as a function of
frequency: fo = 125 Hz; Q ≈ 18.
Fig.4 Control characteristic of the SK amplifier at VP = 8.5 V, mBK = 60% and QL = 70.
May 1992
8