AM-FM radio question

Information and questions on GL1500 Goldwings (1988-2000)
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Location: Blair, Nebraska
Motorcycle: 1998 GL1500 SE
1973 CB750 K3
1970 CT70-HKO

AM-FM radio question

Post by bjatwood » Mon Jul 16, 2012 11:59 am

My 98 1500 radio jumps around with the "ST"(stereo) and off. Which of course makes the sound a bit funky. I know it's not a reception problem as some days the radio will play good all the way to work. Other days no (stereo) at all. And what is/does the "AMB" button do?

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Re: AM-FM radio question

Post by WingAdmin » Mon Jul 16, 2012 1:23 pm

Check the connections for your antenna, and the condition of the antenna itself. If the antenna connection is weak (or even disconnected) the signal can be attenuated enough to cause the stereo signal to go in and out.

The AMB is for Ambience, it takes each channel (left and right), making the sound feel "wide." There are a number of ways of doing this - phase inversion, delays, and so on. I don't know which method the 1500 uses. Here's what the owner's manual says:

The "ambience" circuit blends and boosts certain frequencies from both channels, for a "live performance" effect.
AMB may be used for stereo programs from tape or lhe FM radio. However, the ambience circuit may make weak FM stereo signals or poorly recorded tapes sound worse.

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