I just swapped the caps C55 and C61. Quite a bit of work to
unsolder the antenna and power jacks to get the board out
of the case, then resolder them again putting it back. Also
I almost destroyed both caps unsoldering them, but
it was worth it since it fixed my "anemic" audio level issue,
the rig sounds really great now. I actually had to use the
AFG control to turn the volume down quite a bit :-)
I'm a happy camper!
If you have the ATS-4a 2nd run radio, and you have the quiet audio
problem, then it's definitely worth it doing the fix.
I have now peaked the trimmers for 2 bands and will
continue with the other bands shortly. When I say I find only
one peak I mean there only seems one pair of setting values for
the 2 trimmers of a band that maximizes the audio level. Are
there supposed to be more peaks?
--- In AT_Sprint@yahoogroups.com, Dale Putnam <daleputnam@...> wrote:
> Hi Ilkka,
> Since I have all the equipment to play with the two caps, I'd be real tempted to swap the .o1 for the .1, and test for an improved audio level. That might fix it right up. C55 and C61, yes.
> It concerns me tho, that you are only getting one peak, that tells me that the tuned circuit is nearing peak, but never attains it.
> That may need some additional investigation.
> Good Luck,
> --... ...-- Dale - WC7S in Wy