I'm not sure Jim. I never open it up. It plays fair, but I would have expected better from Collins. I have heard there are some modifications out there to open it up (one involves a L-C network where the filters go). Maybe I just have my expectations too high. It has been reworked by W3HM, but somehow he never re-installed the crystal calibrator nor has he found it. Mod-U-Lator, Mike(y) W3SLK ----- Original Message ----- From: "Jim Wilhite" <[EMAIL PROTECTED]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Sunday, October 01, 2006 10:37 PM Subject: Re: [AMRadio] SP-600 IF Bandwith Specification
Hey Mike, are you sure the filter is good? Sometimes they develop problems after many years. Me thinks they had some sort of foam in them to help prevent movement of the discs and it can deteriorate. 73 Jim W5JO > I'm curious, how well these filters would work in lieu of the Collins > filters? I have a 75A3 with just the 3.2 Kcs mechanical filter and it just > plain sucks. Maybe if it had something along the lines of a 5.5~6.0 Kcs > might make it a little more tolerable. > Mod-U-Lator, > Mike(y) > W3SLK ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] ______________________________________________________________ AMRadio mailing list List Home: http://mailman.qth.net/mailman/listinfo/amradio Partner Website: http://www.amfone.net Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected]
