>
> mzfb2001 wrote:
> > I was looking in the files section and may have missed it, but I am
> > looking to improve the transmit audio quality on my UHF transmiter.
> > I've noticed that the audio is lacking in lows its not tinny but its
> > not what I would call normal audio from a Micor. The audio
> levels and
> > on frequency adjustments have made and to seem to be on the money.
> > This is an unmodified repeater station using stock cards and no
> > controller. The receiver is stock and the frequency has been changed
> > to the 440mhz band. The audio coming out of the receiver has fine
> > audio quality. Just looking for your thoughts or ideas. Thanks for
> > your input Mike
> >
>
> I don't have a real answer for you, but it's interesting that
> I have had
> the opposite experience with the two most recent Micor UHF stations I
> put on-line. Both have a peak very near to 400 Hz, and roll
> off several
> dB/octave above that. Setting for 3 in/3 out @ 1KHz, I get
> abt 4 out @
> 400 hz, and abt, oh, 1.5 or so at 3K.
> Anyone else noticed a peak around 400 Hz on a UHF Micor station?
You're probably seeing the peak in the PL filter's response. If you remove
the PL filter and config the A/S board for carrier squelch operation, you'll
probably see relatively flat response up to about 2.5 kHz where the
"splatter filter" starts to take over.
--- Jeff WN3A
