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Old 06-28-2018, 10:59 AM
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prcguy prcguy is offline
Join Date: Jun 2006
Posts: 6,940

There are no hardware IF filters in the DV10, it should be all done in DSP.

Originally Posted by Ubbe View Post
You can get a more exact error measurement if you use CW mode or SSB. Use no modulatation, just a carrier and adjust the generators RF frequency to give no beat tone. As the frequency drift away you will hear the beat tone go up in frequency so adjust to no tone again to get the exact frequency drift. You measurement indicate a 6 PPM drift.

The #2 crackling tone concerns me a bit. It's usually a telltale sign of a bad IF filter. It could be broken or perhaps a bad design with a lot of ripple. If you can select another IF filter it would probably not have a crackling tone when the frequency are a few KHz off, or else it might be a bad design or too low quality of the IF filters.

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