Xref: utzoo comp.sys.apple2:2637 rec.ham-radio:20595 sci.electronics:12137 Path: utzoo!utgpu!news-server.csri.toronto.edu!rutgers!uwm.edu!rpi!uupsi!sunic!tut!santra!hemuli.tik.vtt.fi!mattila From: mattila@hemuli.tik.vtt.fi (Sakari Mattila) Newsgroups: comp.sys.apple2,rec.ham-radio,sci.electronics Subject: Re: Need help with Apple2 146.76Mhz birdie (please). Keywords: apple2, birdie, interference, rf, 146.76, clock Message-ID: <4940@hemuli.tik.vtt.fi> Date: 28 May 90 19:07:43 GMT References: <4714@plains.UUCP> Followup-To: comp.sys.apple2 Organization: Technical Research Centre of Finland, Laboratory for Information Processing (VTT/TIK) Lines: 11 If you can not detune Apple II's clock oscillator (because of NTSC monitor), try putting FR chokes to all leads coming out of the Apple II main unit. There are quite good two part put together chokes made by Amidon Associates, Inc in the USA. Using these there is no need to remove any connectors or cut cables. Put whole cables thru chokes as near as possible to the Apple II main unit. Ask help from a radio amateur or look up some book on RFI. -- Sakari M. Mattila 71307.1525@CompuServe.COM mattila@tik.vtt.fi Sakari Mattila@3:663*371.0.FNET