What the picture inside the cavity does not show is the height above the cavity wall the probe assy is.

For the probe cavities, about 15mm worked for me. DO NOT get the probes too close to the plunger.

Rather than glue in a previous picture, my plastic parts were longer with a hole for the probe wire.

I made the magnetic coupled probes also about the same height and they worked.

Alan VK2ZIW

On Fri, 15 Jan 2021 19:53:02 -0800, Bill Hudson wrote
> Skyler
> ?
> The cutting chart for the cables is at the bottom of the Cactus publication.
> ?
> Build the T-1507 duplexers and you will be one happy person and the site owner will be happy too.? Having the isolator/circulator from the transmitter going into the bandpass filter is the ultimate Intermod protection for everyone on the site.
> ?
> The notch hardware is impossible to find any more [UTF-8?]?€¡° unless someone converted to a T-1507 like they should.? [UTF-8?]It?€?s just the best / proper way to build a system on a commercial site.
> ?
> Bill Hudson
> W6CBS
> ?
> ?
> From: [email protected] [mailto:[email protected]] On Behalf Of Skyler Fennell
> Sent: Friday, January 15, 2021 7:47 PM
> To: [email protected]
> Subject: Re: [repeater-builder] Motorola T1500 notch
> ?
>
> ?
> ?
>
> On Fri, Jan 15, 2021 at 8:04 PM Bill Hudson <w6cbs@...> wrote:

>
> Hi Skyler
> ?
> I think we have talked on the radio [UTF-8?]?€¡° if [UTF-8?]you?€?re the same Skyler from Denver Colorado [UTF-8?]?€¡° you surprise me that you [UTF-8?]don?€?t recognize what you have.? You are a really good mountain top person.

>
> ?
>
> Thanks Bill, yeah I totally realized they were bandpass only, I just thought?I would give a shout out here to see if they are easily convertible?into notch. I have about 15 bandpass filters in my stash now, all came from IFB's, RPU's, and STL stuff, but they don't need notches for broadcast!
>
> ?
>
> I guess this stuff was given away to me because the new digital stuff doesn't have IMD! "Intermod is such an 80's problem"!!
>
> ?
>
> I have other T1500 based BpBr duplexers at sites that I may measure the lengths off of to get an idea of what Motorola did next time I visit the site.
>
> ?
>
> Look forward to ur group moving Cactus intertie to Squaw Mtn. here in Denver.
>
> ?
>
> ?
>
>
>
> ?

>	> Virus-free.

> ?

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Alan VK2ZIW
Before the Big Bang, God, Sela.
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