Barry,
Most of the time I'd agree with you, but as Jack described his situation, a
roofing filter narrower than 6 kHz (be it 2.4 or 1.8) might help. For CW,
I generally use 300 Hz, except on 160 where a wide roofing filter helps
the DSP NR (as long as there isn't too much strong local activity).
73 Ray W2RS
In a message dated 11/22/2010 6:57:48 P.M. GMT Standard Time,
barry.n1eu@gmail.com writes:
For ssb, the dsp filtering will be sufficient 99% of the time. If you're
a
somewhat serious ssb contester, pop a 1.8Khz filter in - otherwise, don't
bother. Narrow roofing filters potentially help much more with cw.
Barry N1EU
On Mon, Nov 22, 2010 at 6:32 PM, John Molenda
<cdistflatfoot@gmail.com>wrote:
> Hi Ray , I have no optional roofing filters in my Orion II but have
> sometimes wished for them . what filter would be my first and 2nd
> choice to load up on ssb . I work ssb 75 percent of the time and am
> just looking to narrow things up when needed . thanks John
>
> On 11/22/2010 1:10 PM, Rsoifer@aol.com wrote:
> > Jack,
> >
> > I'm not sure these are the best settings either, but here's what I
do.
> To
> > me, AGC Slope works best at 1:10 so I leave it there. On SSB, my
front
> > panel AGC button is set to Prog, which translates to Hang 0, Decay 10
> dB/s
> > and Threshold 1.00 uV. On the Filtr menu, all of the optional roofing
> > filters (I have them all too) are enabled and Xtal filter is set to
Auto.
> With
> > the DSP filter set to 2750, that would auto-select the 6 kHz roofing
> filter,
> > which may be your problem. If you set the DSP filter to 2400, that
> should
> > auto-select the 2.4 kHz roofing filter instead.
> >
> > I generally use the 6 kHz roofing filter for 160-meter CW (tnx, Bob
K8IA,
> > for that tip) but 2.4 kHz for SSB.
> >
> > Hope this helps.
> >
> > 73 Ray
> >
> >
> > In a message dated 11/22/2010 5:52:19 P.M. GMT Standard Time,
> > Thomas.Emerson.Jr@morganstanleysmithbarney.com writes:
> >
> >
> >
> > Hey Ray,
> > Not sure how well this is going to work. I'm at work now, just
checking
> > for replies via the archives on this work station.
> > OK, here's your answers. I have all the filters installed. It does not
> do
> > it on cw. It mostly occurs on 75m, at night, when lots of strong
signals
> > and QRM are around. And it's not like it's happening constantly, just
> > occasional popping in the audio, if very strong signals are on
frequency
> or nearby.
> > I usually keep the filter on ssb set at 2750 hz. I'm thinking maybe I
> need
> > to cut it below 2400, and let that roofing filter kick in. Will try it
> > tonight.
> > And the hardware nb is off. Using nr helps, and moving the agc slope
> from
> > flat to one of the other 2 settings eliminates it. But I prefer to
keep
> > agc slope at the flat setting, so I'm hoping someone else has
> experienced
> > this and found a solution other than the agc slope adjustment.
> > I would think that adjusting the agc menu settings (decay, hang,
> > threshold) would do it, but I haven't found the right combo yet.
> > Jack W4TJE
> >
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