Reference frequency calibration on RT82

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R9OBQ
Posts: 13
Joined: Thu Apr 02, 2020 12:31 pm

Reference frequency calibration on RT82

Post by R9OBQ » Thu Mar 07, 2024 3:14 am

It so happens that my RT82 has a shift of reference frequency (at 144mHz -500Hz, at 70cm already more than 1kHz). When working in analog modes it is not a problem, but when using dmr (especially hotspot) it is already a problem. So far I solve the problem by introducing frequency correction on rt82.
In CPS the calibration tab is inactive.

VK3KYY
Posts: 8143
Joined: Sat Nov 16, 2019 3:25 am
Location: Melbourne, Australia

Re: Reference frequency calibration on RT82

Post by VK3KYY » Thu Mar 07, 2024 6:16 am

R9OBQ wrote:
Thu Mar 07, 2024 3:14 am
It so happens that my RT82 has a shift of reference frequency (at 144mHz -500Hz, at 70cm already more than 1kHz). When working in analog modes it is not a problem, but when using dmr (especially hotspot) it is already a problem. So far I solve the problem by introducing frequency correction on rt82.
In CPS the calibration tab is inactive.
CPS calibration tab only reads and writes the data file for the STM32 based radios.
It only displays the data for the GD77 type radios , including RD5R


You can calibrate the frequency in the firmware

R9OBQ
Posts: 13
Joined: Thu Apr 02, 2020 12:31 pm

Re: Reference frequency calibration on RT82

Post by R9OBQ » Fri Mar 08, 2024 10:38 am

Thank you for your reply. As always, any question is solved by careful reading of the manual =)

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