Wayne, It would be great if you could do that test. I have some VHF high band duplexers that won't tune down into the 2 meter band but I would love to use them on 70 centimeters. I too have read that not only is it possible to use 150 MHz duplexers on 450 MHz, but that the performance is slightly better because of the "larger" cavities. Unfortunately, I don't have the equipment necessary to do the test myself, but I would really like to know if this works.
73 and aloha, Eric KH6CQ --- On Wed, 5/28/08, Wayne <[EMAIL PROTECTED]> wrote: > From: Wayne <[EMAIL PROTECTED]> > Subject: Re: [Repeater-Builder] GE Radios to sale !!!! > To: Repeater-Builder@yahoogroups.com > Date: Wednesday, May 28, 2008, 4:59 PM > First, Who said it was considered 2 meters? > Second, please turn your cap lock off. > Third, I had read, somewhere, that some cavities made for > the VHF high > band could be tuned as bandpass on the 440 band. After all, > the 3rd > harmonic of 147.00 MHz is 441.00 Mhz. Same would, more or > less, hold true > for reject filters. > And I said "might"... > I just might do a test with a 3 can high band filter I > have that is NG > for normal 2 meter repeater splits. > > Wayne WA2YNE > > On Mon, 26 May 2008 14:41:30 -0500, David Piche > <[EMAIL PROTECTED]> wrote: > > > WELL I HAVE A QUESTION, HOW IS 440 MHz CONSIDERED THE > 2M BAND? I WILL > > START THERE. > > > > --- On Sun, 5/25/08, [EMAIL PROTECTED] > <[EMAIL PROTECTED]> wrote: > > > > From: [EMAIL PROTECTED] <[EMAIL PROTECTED]> > > Subject: Re: [Repeater-Builder] GE Radios to sale !!!! > > To: Repeater-Builder@yahoogroups.com > > Date: Sunday, May 25, 2008, 9:54 PM > > > > > > > > > > > > > > At 5/25/2008 00:17, you wrote: > > > Those are of no use for 2 meter ham, being as > they are for a 5 MHz > > split. > > > However, it might be possible to use them on > the 440 band. > > > > > > Wayne WA2YNE > > > Imperial, Tejas > > > > VHF HB mobile duplexers can't be tuned to 440, but > if it's a 6-section > > duplexer, it can be tuned down to about 2.5 MHz, > allowing use on 2 meters > > for portable repeaters. > > > > Bob NO6B > > > > > -- > Using Opera's revolutionary e-mail client: > http://www.opera.com/mail/ > > ------------------------------------ > > > > Yahoo! Groups Links > > >
