Try google 1296mhz interdigital filter. Lots of plans on the internet and very easy to constuct. 73's James VE5AAE
--- On Thu, 7/1/10, Geert Jan de Groot <pe1...@xs4all.nl> wrote: From: Geert Jan de Groot <pe1...@xs4all.nl> Subject: [Repeater-Builder] Re: 1296 filter To: Repeater-Builder@yahoogroups.com Received: Thursday, July 1, 2010, 6:04 AM On 1 Jul 2010 02:58:24 -0000 Repeater-Builder@yahoogroups.com wrote: > I'm searching a valid project of 1296MHz cavity filter. Schematic, images are appreciated. > I would use it on 1296 fm repeater and atv repeater 1240/1290. > Could be interesting a project of cavity filter with unique antenna out. ATV filtering might be difficult because the signal is wide and you're bound to have phase distortion problems. Having said that, see if you can find someone who has the "UKW unterlagen" book series (in German). Geert Jan
