RE: [Repeater-Builder] Receiver crystal filter

2006-11-24 Thread Eric Lemmon
John, Front-end crystal filters are generally available only up to 200 MHz or thereabouts, so you may not find a supplier of such a filter for the 70cm band. Here is one of several sources of crystal filters: http://www.mtronpti.com/products/index.php?id=65 73, Eric Lemmon WB6FLY

RE: [Repeater-Builder] Receiver crystal filter

2006-11-24 Thread Mike Morris WA6ILQ
Make sure that you have the signal level to use a crystal filter. Some can be as low as 2db insertion loss, others can be as high as 10db. At 11:44 AM 11/24/06, you wrote: John, Front-end crystal filters are generally available only up to 200 MHz or thereabouts, so you may not find a supplier of

Re: [Repeater-Builder] Receiver crystal filter

2006-11-19 Thread Glenn Little WB4UIV
What bandwidth? What insertion loss? A 150 MHz xtal filter with 6 KHz BW has about 11.5 dB insertion loss. A 140 MHz xtal filter with 40 KHz BW has about 5 dB insertion loss. See http://www.filtro.net/products/filters/filters.asp 73 Glenn WB4UIV At 04:19 PM 11/19/06, you wrote: Any