I'd say it's chiefly oriented to hams, SSB and CW and the various
tone stuff that I don't follow.

It has a 5kHz bandwidth, which means it's about as good as you
get for program listening - the various JPS and MFJ's aren't that
wide.

You get a frequency display of the notch and bandpass you're setting
up, and a way to save them.

I use the manual notch all the time. I wish it had more.

The automatic notch, like every automatic notch, doesn't work
with program listening, but only against huge solid heterodynes;
and the automatic notch would hash music in any case. So I don't
use that.

The noise reduction is just okay, not very state-of-the-art.

(Heil Sound is putting out a ClearSpeech filter that ought to be
pretty good for noise reduction; it's supposed to the the old
Amcomic one plus some knobs added.)

The 599zx brickwall filters are handy, and if you're looking for
a high or low whistle, sometimes easier than the notch filter in
finding the right frequency.

With SSB, if an interfering station is offset in the direction of
the sideband (eg. higher frequency for USB), a brickwall filter
eliminates it completely, a fairly amazing effect.

The 60Hz filter sometimes works on a hum some station has left in,
like Radio Havana used to do that a lot.

For program listening, I use only the manual notch and sometimes the
brickwall filters, reverting to an Ancominc for noise reduction.

Ie., I use only the linear parts of the filter.

Probably too pricy for the feature, but it depends on how much you
want to have one around.

I'd use the stereo CW if I listened to CW any more but I don't.
The sharp filters for tones would make what used to require intense
concentration quite easy today.

But for program listening, I use only the notch and
--
Ron Hardin


On the internet, nobody knows you're a jerk.