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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