Re: [Repeater-Builder] adding a notch to bandpass cavity

[Gareth Bennett]

Hi Ian, What exactly is your problem with filtering? It reads like It seems that  you trying to achieve a steep reject notch for your associated Tx whilst rejecting any outside frequency from your Rx?     Are you suffering desense on your site? I is your site shared by other users, and if so what are the frequencies in use?     Any conventional "Notch" filter can give you in excess of 20dB of rejection at 5 Meg separation with minimal loss at your Rx frequency. In essence all notch filters are really a band pass-band reject filter with careful calculation.   Whats the temp in OZ at the moment?   Regards _________________________________________________________________   Gareth Bennett   This e-mail is confidential, if you received this message in error, or you are not the intended recipient, please return it to the sender and destroy any copies. Thank you. ----- Original Message ----- From: Ian Wells To: Repeater-Builder@yahoogroups.com Sent: Monday, January 23, 2006 11:07 PM Subject: [Repeater-Builder] adding a notch to bandpass cavity Has anyone ever added a notch to a band pass cavity so it filters one frequency and notches another frequency in the same cavity tin  .I am looking at filtering one rx  frequency through the bandpass cavity but notch a TX frequency 5.2 meg away from the first frequency .any sugestions ?    Thank You, Ian Wells, Kerinvale Comaudio, www.kerinvalecomaudio.com.au   YAHOO! GROUPS LINKS  Visit your group "Repeater-Builder" on the web.    To unsubscribe from this group, send an email to:  [EMAIL PROTECTED]    Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.