Those of us in the industry will probably still use the well known Norcomm or original Selectone Circuits as the most practical answer, a well trusted proven circuit and a fair dollar value.
cheers, skipp > Joe Montierth <[EMAIL PROTECTED]> wrote: > > Walter, that same chip could easily be built up on a small circuit board to give a 2175 notch, with a very sharp response. Could probably build one up for $20 or so. > > Joe > > --- On Thu, 9/18/08, ka1jfy <[EMAIL PROTECTED]> wrote: > From: ka1jfy <[EMAIL PROTECTED]> > Subject: [Repeater-Builder] Re: CTCSS highpass filter paper > To: [email protected] > Date: Thursday, September 18, 2008, 3:17 PM > > > > > > > > > > > > Not real interested in a PL filter, but my agency [hello Joe M] would > > be REAL interested in a commercial version of the notch filter. > > > > We currently put either a Vega passive [$150] or Midian active [$60] > > 2175 notch in every repeater we build up. > > > > Walter KD7BJJ > > Phoenix, AZ > > > > --- In Repeater-Builder@ yahoogroups. com, Kevin Custer <kuggie@> > > wrote: > > > > > > All, > > > > > > Reference : http://www.mix- sig.com/Msi5data 12.pdf > > > > > > Repeater Builder (the company) may be interested in building this > > up and > > > making it available as a add on unit. We had looked at this some > > time > > > ago, but felt the concept was not understood by our community to > > the > > > degree that the product would be very successful. We have found > > that > > > education of the folks interested in the AP-50 has been a challenge > > at > > > best. Sure, better sounding repeaters has resulted since the > > release of > > > this little device, but I doubt we'll ever sell enough to make it > > worth > > > the effort of getting it all together and making it available to > > the > > > general builder. > > > > > > How many of you would really buy a PL filter like this? >

