parnass%ames.arpa.uucp@BBN.COM> (01/31/90)
In article <4830.25c4455c@uwovax.uwo.ca>, johnb@uwovax.uwo.ca writes: > > .... on the Realistic Pro32 scanner? > 2. When the volume is cranked way up , I only get a loud roar from the > speaker when receiving nearby stations. Turning the volume full blast on this, and some other radios, will set up physical vibrations in the circuitry. There may be some components which are microphonic, meaning that a physical vibration will alter their electrical behaviour. You can modulate microphonic components by tapping them or even yelling at them! I used to yell at the front of my old Heath tube type RF signal generator, and my voice actually modulated the carrier due to microphonics. -- ============================================================================ Bob Parnass, AJ9S - AT&T Bell Laboratories - att!ihuxz!parnass (708)979-5414