You have to realize that all analog radios drift somewhat. Some say the
S-350 drifts more than most, but it is my belief that the main reason for
this is that you can SEE the drift on the digital display. I own several
analog radios (GE SRIII, Zenith Trans-Oceanics (tube and transistor) and
several small portables and find that they ALL drift audibly under some
conditions. Drift seems to be most the higher you go in frequency, so on the
GE SRIII, I don't notice any drift at the low end of the dial but there is
drift I can hear at the high end of the dial. If I can hear the drift enough
to have to retune it I can only imagine that, if the radio were equipped
with a digital readout, it would be on the order of 10 to 20 KHz near the
top of the am band.

On shortwave drift is noticeable to an even greater degree. On my
Trans-Oceanics (all well esteemed radios), if I tune to the BBC at 15190
when the set is first tuned in, I can hear the frequency drift during the
first 10 to 15 minutes of operation and when I retune slightly, the signal
comes back in.

The S-350 was designed to give a lot of performance for the money, and I
don't think anyone can deny it surely does. Also, recent production (I think
the date of manufacture starting around April of 2003) has a small change to
help minimize drift when the radio is kept plugged into the AC by keeping
one critical IC at operating temperature. I don't use mine plugged in,
though, and I still find the drift is within the first few minutes of
operation. A small amount of drift is normal, and generally I think the
whole drift issue has been blown way out of proportion.

Just my two cent's worth!

Jay
"Arthur Pozner" wrote in message
...
Have used it for about 3 months now. Seems like a good
sounding and well thought out portable .
However, why does it drift down in frequency as the temperature
increases? As a test, I had it set to a station in the 21 MHz broadcast
band and to my horror seen frequency set go down...30 to 60 KHz as if
something was moving it ! What kind of gremlin did Tecsun,the OEM, plant
in it? Why it is not modified; as far as I know this is has been a
problem since its inception- nearly two years ago!!