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Jon_G4MDC · 22nd Aug 2019, 10:58 am

Thanks for the results Chris!!
Looking at them I think they indicate that the 9122 is doing what it should.
xxx.5x9 is 2.142
xxx.5x0 is 2.274
xxx.5x1 is 2.410
xxx.5x2 is 2.549
xxx.5x3 is 2.695
xxx.5x4 is 2.845
xxx.5x5 is 3.000
xxx.5x6 is 3.161
xxx.5x7 is 3.327
xxx.5x8 is 3.495 allow for a few mV of leeway for measurement uncertainty.

This loop is perfectly following the programming numbers you measured earlier so the
misbehaviour must come from somewhere else.

I had another idea. Please could you do the same exercise but this time on TP09. That is the next oscillator in the chain.
I think we will see misbehaviour on that one - but let's prove it first.

22nd Aug 2019, 10:58 am	#44
Jon_G4MDC Nonode Join Date: Nov 2015 Location: Welwyn Garden City, Hertfordshire, UK. Posts: 2,015	Re: Yaesu FT480R Thanks for the results Chris!! Looking at them I think they indicate that the 9122 is doing what it should. xxx.5x9 is 2.142 xxx.5x0 is 2.274 xxx.5x1 is 2.410 xxx.5x2 is 2.549 xxx.5x3 is 2.695 xxx.5x4 is 2.845 xxx.5x5 is 3.000 xxx.5x6 is 3.161 xxx.5x7 is 3.327 xxx.5x8 is 3.495 allow for a few mV of leeway for measurement uncertainty. This loop is perfectly following the programming numbers you measured earlier so the misbehaviour must come from somewhere else. I had another idea. Please could you do the same exercise but this time on TP09. That is the next oscillator in the chain. I think we will see misbehaviour on that one - but let's prove it first. Last edited by Jon_G4MDC; 22nd Aug 2019 at 11:07 am.