13-05-2011, 08:06 PM
Hi Joe,
Don't give up just yet
I've not done an R600, but recently summoned enough courage to tackle an R707 (now that was a job!). I know what you mean about those modules - I've still got pretty good close-up vision, but keep a x7 eyeglass to hand for those sorts of things!
You ought to be able to find a schematic for the module. It might not have component values on, but you should be able to work out enough from the diagram to double-check your work. It's not easy, but removing the module is much easier than in an R707
If the worst comes to the worst, I might have a spare module - or be able to fix yours for you...
As for the effect you noticed at ~100MHz, you've now proven that the local oscillator is working (R2 + 10.7MHz = ~100MHz)
All the best,
Mark
Don't give up just yet
I've not done an R600, but recently summoned enough courage to tackle an R707 (now that was a job!). I know what you mean about those modules - I've still got pretty good close-up vision, but keep a x7 eyeglass to hand for those sorts of things!
You ought to be able to find a schematic for the module. It might not have component values on, but you should be able to work out enough from the diagram to double-check your work. It's not easy, but removing the module is much easier than in an R707
If the worst comes to the worst, I might have a spare module - or be able to fix yours for you...
As for the effect you noticed at ~100MHz, you've now proven that the local oscillator is working (R2 + 10.7MHz = ~100MHz)
All the best,
Mark
