Re: [PATCH] FM1216ME_MK3 some changes

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Guys,

[snip]

> > 
> > Do the circuit board traces in the FM1216ME_MK3 support the TDA9887
> > controlling the gain of the first stage?  (I've never opened an
> > equivalent NTSC tuner assembly to take a look.)
> 
> "equivalent" NTSC tuners _do not_ exist at all.
> 
> I don't forget all the time we spend to find out that some of them are
> Intercarrier only!
> 
> Also, the tda988x stuff is underneath the tuner PCB.
> 
> I cut one off for those interested in line tracing ...

still on the to do list ;)

> Without port2=0 you don't get any SECAM-L into the sound trap.
> 
> It needs amplification from minus 40 dB AM for the first sound carrier,
> and then of course you prefer the second with NICAM.
> 
> > If not, then, if I understand things correctly, you need to set the
> > first stage and second stage TOP settings so that they refer to about
> > the same signal level before the IF SAW filter.  
> > 
> > 
> > I would think AGC TOP settings, for both stages of the tuner, are
> > tuner-dependent and relatively constant once you figure out what they
> > should be.
> > 
> > Do you have a different understanding or insight?
> > 
> > Regards,
> > Andy

Hartmut once offered to make contacts with colleagues at Philips Hamburg
for such tuners and related tda9887 stuff.

Unfortunately he is not active on the lists currently.

If I see, how easily someone can get a patch to Andrew and disables all
other SECAM stuff, again from Russia, I'm not convinced on anything from
there.

I seriously doubt that those tuners are meant for fumbling on TOP RF/IF
settings from user space.

Cheers,
Hermann




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