Re: Tecsun changed design PL-390


lrdheat
 

I see that the "60" allows for adjusting the sof mute and 7 band widths.

From: mikl1962
To: ultralightdx@...
Sent: Saturday, January 7, 2012 1:26 PM
Subject: [ultralightdx] Re: Tecsun changed design PL-390

 
If you found some improvemnts already :), my advice is to read programming guide
You will understand a lot about flexibility D60 chip fine tuning in comparison with B20

--- In ultralightdx@..., "ferrite61" wrote:
>
> np: I was reading the info on their pages. Yes, there are some spec improvements for FM Stereo, and some smaller improvements to S/N. These were always there with software programming with caveats about distortion. The baseline specs for RX sensitivity on all bands seems the same. For some reason, I also notice that the 47xx series is now claiming 150 to 279 kHz Long wave. I don't see the near full coverage 150 to 1700 kHz. Is this still a software option?
>
> Paul S. in CT
>
>
> --- In ultralightdx@..., "texnote" wrote:
> >
> > I meant to say "there are some improvements in the D60 revision".
> >
> > Sorry
> >
> > Paul
> >
> > --- In ultralightdx@..., "texnote" wrote:
> > >
> > > The spec sheets are here:
> > >
> > > D60:
> > > http://www.slideshare.net/radiopaul/si4730-313435d60
> > >
> > > B20:
> > > http://www.slideshare.net/radiopaul/si4734-35b20
> > >
> > > So yes there are some improvements in the B20 revision. It's also a smaller chip (15 mm2 vs 20 mm2).
> > >
> > > Paul
> > >
> > > --- In ultralightdx@..., "mikl1962" <mikl1962@> wrote:
> > > >
> > > > You are wrong:(
> > > > Just compare specs (B20 & D60) and you find better specs in FM:
> > > > - Audio Stereo Separation
> > > > - Sensitivity in 64-76Mhz
> > > > - Seek/Tune Time
> > > > My test on Sangean ATS-909X (D60) against PL-390 (B20) shows real advantage D60 revision in FM
> > > >
> > > > Also important change in using more metrics for Tune
> > > >
> > > > Even in AM you may find better Audio S/N
> > > > --- In ultralightdx@..., "ferrite61" wrote:
> > > > >
> > > > > I looked into this after register/log-in. There are no specification changes to the chip, and it suggests a modification of coding and options.
> > > > >
> > > > > Paul S. in CT
> > > >
> > >
> >
>



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