Tuner deviation meter ?

Analog FM tuners had a meter to help you get tuned accurately to the station's carrier frequency (Which is modulated to reflect the audio signal). Proper tuning minimizes distortion and noise. The meter should be adjusted for null: ie: centered.

Digital tuners don't have meters except for signal strength which is used for pointing a directional antenna. Tuning of a digital tuner is based on its crystal oscillator, which is more accurate than anyone could do twiddling a knob.

Eldartford, are you sure you have the right meter for your description? My deviation meter on my Kenwood KT-917 moves with the signal level. (i.e it bounces around as the signal level changes, like the signal meters on a cassette deck.)

Guycom:

The more expensive vintage analog tuners/receivers actually had two types of signal meters for FM reception:

1. A signal strength meter, which is the type that Brian was referring to. This meter moved in conjunction with signal strength.

2. A signal tuning meter, which is the type that Eldartford was referring to. This meter is a centering type meter. Really old vintage equipment (post WWII Grundig receivers) used a tuning "eye" for these purposes.

The more basic receivers usually went with one meter ... the signal tuning type.

AM reception usually piggybacked off the signal strength meter. The idea was that when you were receiving the strongest AM signal, it was tuned about as well as you could get.

There are meter-less vintage receivers/tuners out there. You get to use your ears to best tune stations on those receivers.

Regards, Rich