"mc" bravely wrote to "All" (03 Jan 06 00:00:37)
--- on the heady topic of "FM hiss, vintage 1973 receiver"

mc From: "mc"
mc Xref: core-easynews rec.audio.tech:186013
mc sci.electronics.repair:353686

mc FM stereo receiver, vintage 1973, has a noticeable background hoise
mc (hiss/white noise) on FM stereo regardless of the incoming signal
mc level. It disappears completely upon switching to mono.

mc Is this normal in a receiver of that age? If not, what components are
mc likely to be deteriorating?


Vintage 70's equipment is making a comeback and is all the rage now.
A big noise is absolutely normal between stations if there is no
muting circuit but when tuned to a station the noise should drop
dramatically. It is also normal to have a little extra hiss in stereo.
However I have no idea how much hiss is normal for your particular
receiver. If it seems excessive then perhaps the components to look at
are electrolytic capacitors around the stereo decoder/demultiplexer
circuitry. If you can find a separation adjustment trimmer, sometimes
reducing the separation a little can lessen the hiss significantly
without affecting the stereo effect too much.

A*s*i*m*o*v

.... A stereo system is the altar to the god of music.