This is MFJ's "signal enhancer" Tunable CW/SSB Filter. I need a manual in any format. MFJ doesn't have them. Please advise if you can help. Thanks to All es 73, Alan, W5EAC, formerly N5KNR _________________________________________________________________ There are now three new levels of MSN Hotmail Extra Storage! Learn more. http://join.msn.com/?pgmarket=en-us&page=hotmail/es2&ST=1