I have a Hewlet Packard 8559A Spectrum Analyzer. Anybody here familiar with this unit? I need a manual, and the fine level adjust knob is missing. -- SkyBird Broadcast Group, Inc. (906) 228-3275 Voicemail (906) 225-5496 Fax Friday Night Live: Media News Program 9PM-Midnight On Satellite or Internet: http://skybirdradio.org