Brian, That device is designed to allow operation across the full 902-928 spectrum, with the notch specifically at 928 to knock-out the pagers. >From my MW xmit days we used MW Filters almost exclusively, well known in the >Common Carrier ind. & The guy that started the company went to Michigan, was >building filters in his garage as a grad student in Ann Arbor. For whatever >thats worth. Ron
>-----Original Message----- >From: Brian Rohrbacher [mailto:[EMAIL PROTECTED] >Sent: Tuesday, February 20, 2007 04:18 PM >To: 'WISPA General List' >Subject: Re: [WISPA] failing Canopy 900 > >yes, but I'm still unclear about what center frequency I could use with >it. Thw spec sheet didn't clear it up. I'll have to try to call them back. > >Brian > >Jack Unger wrote: >> Thank you, Brian. The price is certainly right on that filter. >> >> >> Brian Rohrbacher wrote: >> >>> Sharing the info I am............ >>> >>> Hello, Brian >>> >>> >>> >>> Thank you for your interest in Microwave Filter Company. >>> >>> >>> >>> The filter that you inquired about is the: >>> >>> >>> >>> Notch Filter >>> >>> MFC P/N 15345 >>> >>> $164.00 unit cost plus shipping >>> >>> Shipment 1 week after receipt of order >>> >>> >>> >>> Attached is the specification drawing of the filter that you >>> requested. If you have any questions or concerns, please contact me >>> direct. >>> >>> >>> >>> Regards, >>> >>> >>> >>> Bob Haytko >>> >>> Customer Relations >>> >>> Microwave Filter Co., Inc. >>> >>> Tel: 315-438-4725 (direct) >>> >>> Fax: 315-463-1467 >>> >>> Email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >>> >>> >>> >>> >>> >>> >>> >>> Jack Unger wrote: >>> >>>> Brian, >>>> >>>> Bandpass filters come in different band "widths". Some are full-band >>>> filters that pass 902-928 MHz and some are single-channel filters >>>> that are narrower and pass only one channel. The bandwidth of the >>>> two Ubiquity filters are a little narrow to use across the entire >>>> band but if you are using 912 or 917 as center frequencies, they >>>> should work well. If you're using a lower center frequency, you'll >>>> need a filter that has a bit wider bandwidth but which still >>>> attenuates the paging frequencies a lot. The availability of good >>>> whole-band bandpass filters seems to have deteriorated a bit in the >>>> last year. There are more filters available but they seem to have >>>> poorer characteristics and sometimes higher prices. I just looked at >>>> RFLinx and Hyperlinktech and I am not happy with their current >>>> offerings. I did discover a notch filter that is tuned to attenuate >>>> the paging frequencies while passing the 902-928 frequencies. I >>>> don't know the pricing but if it's priced reasonably then it looks >>>> like your best bet. Here's the link: >>>> >>>> http://www.microwavefilter.com/2ghzRelocation.htm#ism >>>> >>>> It's the filter at the bottom of the page. If you call them to get a >>>> spec sheet and to check pricing, please share that info. >>>> >>>> Thanks, >>>> jack >>> >>> >>> >>> >>> >>> >>> >>> ------------------------------------------------------------------------ >>> >>> No virus found in this incoming message. >>> Checked by AVG Free Edition. >>> Version: 7.5.441 / Virus Database: 268.18.3/693 - Release Date: >>> 2/19/2007 5:01 PM >>> >>> >> >-- >WISPA Wireless List: wireless@wispa.org > >Subscribe/Unsubscribe: >http://lists.wispa.org/mailman/listinfo/wireless > >Archives: http://lists.wispa.org/pipermail/wireless/ > -- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
