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Quantro info

This forum is for discussions regarding System Infrastructure and Related Equipment. This includes but is not limited to repeaters, base stations, consoles, voters, Voice over IP, system design and implementation, and other related topics.

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mogman
Posts: 112
Joined: Tue Aug 05, 2008 2:25 pm

Quantro info

Postby mogman » Wed Jun 07, 2017 7:57 am

I am curious, I have been told the Quantro "PA" that is in the same shelf is nothing but a path for the exciter to get to the outboard IPA, makes sense.
Now the question, is that "PA" that is connected to the exciter frequency dependent?
Second question, is the IPA and PA in the 350W VHF MSF5K the same or can it be converted/modified to work as a Quantro??
Easy to see where I am going with this, Quantro docs are not easily found....
Thanks

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motorola_otaku
Posts: 1759
Joined: Tue Jan 13, 2004 7:03 am
What radios do you own?: 2 turntables and a microphone

Re: Quantro info

Postby motorola_otaku » Thu Jun 29, 2017 11:42 am

In UHF and 800 stations the IPA in the station does actually contain a power module to take the mW exciter output up to 2-6W to drive the MSF5000 PAs with. VHF stations do not have an IPA, and the exciter feeds the PAs directly.

800 IPAs can be moved from 800 to UHF with a swap of the power hybrid and some other chip component changes. The big Quantar/Quantro/AstroTAC service manual was scanned and posted here a few years ago, and the IPA schematics break out the component changes.
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mogman
Posts: 112
Joined: Tue Aug 05, 2008 2:25 pm

Re: Quantro info

Postby mogman » Sun Jul 02, 2017 1:22 pm

Thanks, I wonder if anyone has that file?

KD0ORH
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Posts: 5
Joined: Sun May 08, 2016 2:01 pm

Re: Quantro info

Postby KD0ORH » Sun Sep 03, 2017 4:08 pm

Does anyone have any info on the VHF Quantro 5v/IPA?
I cant find anything in the owners or service manuals on it.
Not even a part number but their is info on the UHF and 800 MHz
Thanks

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Astro Spectra
Posts: 592
Joined: Sat Sep 22, 2001 4:00 pm

Re: Quantro info

Postby Astro Spectra » Mon Sep 04, 2017 8:31 am

There is a picture of the inside of the 800 MHz IPA here on eBay:

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Don't know how long the link to that image will last.

KD0ORH
New User
Posts: 5
Joined: Sun May 08, 2016 2:01 pm

Re: Quantro info

Postby KD0ORH » Thu Sep 07, 2017 4:42 am

Any one have a picture, manual, or schematic of VHF Quantro IPA?

khw
Posts: 41
Joined: Sun Jun 24, 2007 8:51 am
What radios do you own?: Quantars, Quantros, APX, XTS..

Re: Quantro info

Postby khw » Sun Sep 10, 2017 9:16 pm

Picture I can do. Anything specific you want to see? The board part number is TLD9920.
The schematic should be around here, but it wasn't in the service binder - just the UHF and 800 modules. You know how it goes, somebody takes the page out of the binder and forgets to put it back. (and that somebody would be me...)

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Kevin


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