[TenTec] What sort of bandwidth do you like?

Dr. Gerald N. Johnson geraldj at storm.weather.net
Sat Mar 14 10:04:29 PDT 2009


On Sat, 2009-03-14 at 19:03 +0700, Martin Sole wrote:
> This is a question related specifically to voice modes (SSB) and in
> particular comes down to the sound of Orion. It is not about how much
> bandwidth you like as no doubt we all find that varies with the specific
> conditions at any given time. Rather it relates more to the shape of the
> passband you might find best. Personally I find that the fairly well worn
> and acknowledged 300Hz to 3kHz is about the ideal under most circumstances.
> I can manage with less and appreciate it when the conditions are rough,
> preferring something a little more focussed toward the higher end and going
> as far as 500Hz to 2.6kHz and maybe a little further in some extreme cases.
> But in all cases I like it to be reasonably flat in the passband with a
> regular and defined roll of outside of those limits. 
> 
>  
> 
> Ever since I got my Orion I have been running the Rx Eq at fairly high
> negative values -16dB to -20dB but have always felt that this is not doing
> what I want. Recently I have started to do things differently, and with
> startling results, to my ears at least. Appreciating that we all have
> different hearing characteristics I would be interested to hear what sort of
> audio spectrum shape you like to listen to for radio work.
> 
>  
> 
> Regards
> 
> Martin, HS0ZED

I like to roll off the high end about 2100 Hz. Cuts QRM and noise
without hurting copy, often improves copy of weak signals.

73, Jerry, K0CQ



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