Re: need some roofing filter advice?

Posted by Iain MacDonnell - N6ML-2 on Jul 20, 2011; 4:53pm
URL: http://elecraft.85.s1.nabble.com/need-some-roofing-filter-advice-tp6581353p6603510.html

Personally, I leave mine set at 1800 width, 1050 shift (the net effect
of dialing the HI-cut down until the the width is 1800) all the time,
and SSB sounds fine to me. I haven't touched those controls in SSB
mode in a long time. I may be missing out on some benefit of fiddling
with it. I generally only use SSB for DXing and some contesting, so
"fidelity" isn't an issue!

73,

    ~iain / N6ML


On Wed, Jul 20, 2011 at 4:44 PM, Ed Muns <[hidden email]> wrote:

> What's "different" about the K3 is its outstanding usability.  With a single
> front panel control, HI CUT, any SSB bandwidth can be quickly dialed in,
> maintaining optimum intelligibility.  With the few prior generation radios I
> tried narrow SSB filtering on, there were obscure menu settings and/or IF
> controls that were much more complicated to set for the same result.  Some
> users never figured out the appropriate settings and thus concluded it
> didn't work.
>
> Ed - W0YK
>
> Bill, W4ZV, wrote:
>> The K3 is not actually different or it would be violating the
>> laws of physics.  To make ANY radio work using narrow
>> bandwidths on SSB is simply a matter of optimizing the
>> placement of the filter passband in the voice spectrum (as Ed
>> states above).  The FT-1000MP, K2, Orion and many others can
>> be made to work with narrow filters.  I first discovered this
>> on an MP I used in the late 90s:
>>
>> http://www.va3cr.net/va3cr2.net/markv/Troubleshooting/Filters.htm
>
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