[SBE] Question about an FM translator cavity filter --

[k7cr]

There are a lot of very sharp hams out there.  Some of these folks 
have been building, installing and debugging repeater systems for 
years and, in the process, have become very sharp.

Clay Freinwald, K7CR 
----- Original Message ----- 
From: "Clark, Roz (CXR-Tampa)" <Roz.Clark at coxtampa.com>
To: "sbe member discussion mail list" <sbe at sbe.org>
Sent: Wednesday, June 04, 2008 12:06 PM
Subject: Re: [SBE] Question about an FM translator cavity filter --



> FWIW this lead originally came from one of the Tampa Amateur Radio

> Operators, KG4YZY (Dave Anderson). 

> 

> http://www.ni4ce.com/

> 

> He seems to have connections to unique problem solving items.  Our Tampa

> SBE Chapter has learned a lot from these guys...

> 

> Roz

> 

> 

> 

> -----Original Message-----

> From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of Bill

> Whitt

> Sent: Wednesday, June 04, 2008 3:00 PM

> To: 'sbe member discussion mail list'

> Subject: Re: [SBE] Question about an FM translator cavity filter --

> 

> I concur -- this site looks really cool. I was checking out the filters

> ,

> and was quite impressed.

> 

> Bill Whitt

> 

> -----Original Message-----

> From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of Mike

> Langner

> Sent: Wednesday, June 04, 2008 11:36 AM

> To: sbe member discussion mail list

> Subject: Re: [SBE] Question about an FM translator cavity filter --

> 

> Thanks !

> 

> I took a quick look -- looks like a great site with real "toolbox"

> parts!!

> 

> Mike/

> _______________

> 

> 

> -----Original Message-----

> From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org]On Behalf Of

> Clark, Roz (CXR-Tampa)

> Sent: Wednesday, June 04, 2008 11:56 AM

> To: sbe member discussion mail list

> Subject: Re: [SBE] Question about an FM translator cavity filter --

> 

> 

> May want to try this company if you need a custom filter.

> 

> http://www.tinlee.com/index.php

> 

> A recent filter I got was able to notch out a signal 800khz away by over

> 60db with only around 1db of loss at desired frequency.  

> 

> 

> 

> -----Original Message-----

> From: sbe-bounces at sbe.org [mailto:sbe-bounces at sbe.org] On Behalf Of Alan

> Alsobrook

> Sent: Tuesday, June 03, 2008 9:06 PM

> To: sbe member discussion mail list

> Subject: Re: [SBE] Question about an FM translator cavity filter --

> 

> I've used "Fast Traps" from MFC, on FM receive lines at the transmit 

> tower they were able to make the FM signal originating from that tower 

> simply disappear. I've swept a couple fast traps and I think it gives 

> about a >75db reduction in signal.  I was using them to knock down my 

> signal so I could receive distant LP (EAS) stations.

> 

> 

> Mike Langner wrote:

>> These are great ideas !

>> 

>> But. . .

>> 

>> While I could put a receiver somewhere else on the small electronic

> site on

>> the mountain, there's no way to get very far from the very short-tower

> 25 kW

>> FM station just 1.2 MHz away!

> 

> 

> -- 

> Alan Alsobrook CSRE AMD CBNT

> St. Augustine Fl. 32086 904-829-8885

> aalso at Bellsouth.net

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> 

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