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Updated FAQ (markdown)

Denny Sheirer
2024-02-19 05:44:59 -05:00
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FAQ.md

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### MPT-1327
***
#### How do I recover the channel map for an MPT1327 system if I only know the control channel frequency?
Setup a channel configuration to monitor the control channel frequency for a period of time. Using the events tab, catalog all of the logical channel numbers that are referenced for call events. sdrtrunk will tell you that it doesn't know the frequency, but that's ok, we just want the channel numbers being used by the system for traffic channels.
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It's best to use a spreadsheet when you're trying to recover the channel number ranges since you can create formulas to auto-calculate the frequencies from the channel numbers using different base frequencies and channel number first-last ranges. However, if you are able to recover several channel number to frequency mappings, post a new topic here on the Discussions tab, or post a question on Radio Reference and you'll probably get some help figuring out the channel map.
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## Tuners
### SDRPlay