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Minitor1 UHF crystal calculation

This forum is focused on discussing Digital and Voice paging equipment, protocol's, infrastructure, and Motorola specific hardware used. Please refrain from discussing different ways to monitor the digital paging systems due to the legalities of such.

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fineshot1
Posts: 910
Joined: Wed Oct 12, 2005 5:13 am

Minitor1 UHF crystal calculation

Postby fineshot1 » Tue Apr 19, 2016 6:58 am

I have an old Minitor 1 UHF with the RF board crystal freq = 18064.8
Pager Model Number AO4EAC2468A and the RF board number = NRE6114AB

Just trying to find out what frequency this pager is on and can not seem
to locate the crystal calculation online and no documentation or SM.
fineshot1
NJ USA

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arlojanis
Posts: 956
Joined: Mon Jan 28, 2002 4:00 pm

Re: Minitor1 UHF crystal calculation

Postby arlojanis » Wed Apr 20, 2016 5:45 am

crystal = carrier - 455, divide by 25. Or crystal X 25 + .455 = channel. I get 452.075 mhz. Part number KXN6047A.
"The world runs on radio."

fineshot1
Posts: 910
Joined: Wed Oct 12, 2005 5:13 am

Re: Minitor1 UHF crystal calculation

Postby fineshot1 » Wed Apr 20, 2016 7:42 am

arlojanis wrote:crystal = carrier - 455, divide by 25. Or crystal X 25 + .455 = channel. I get 452.075 mhz. Part number KXN6047A.


Thanks Arlojanis - i will make a note of that calculation and wondering if you know if that calculation applies
for any other models as well. Thanks again
fineshot1
NJ USA

User avatar
arlojanis
Posts: 956
Joined: Mon Jan 28, 2002 4:00 pm

Re: Minitor1 UHF crystal calculation

Postby arlojanis » Wed Apr 20, 2016 9:20 am

Do not know about many models. The UHF Minitor II crystal is KXN6301AA and is carrier - 45 and divide by 6 or 8 depending on band split.
"The world runs on radio."


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