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Re: [TenTec] What sort of bandwidth do you like?

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] What sort of bandwidth do you like?
From: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 14 Mar 2009 18:24:53 -0500
List-post: <mailto:tentec@contesting.com>
I don't mess with the RX EQ. Basically it's a very broad shelving type design. Less than effective for any purpose in my opinion. If you like "hi-fi" audio, then best look at the type speaker used, it's placement in the room or on the desk. I find that communications type speakers actually do a much better job than the typical "hi-fi" speakers. After all, we are usually listening to spoken voice and CW sounds. Pretty narrow range stuff so why have a speaker that goes down to 50Hz or up to 15 KHz. Outside of the voice and CW range there's little information coming out of the receiver and likely only aggravating noise.

Better results are obtained with the BW and PBT settings.

73
Bob K4TAX


----- Original Message ----- From: "Martin Sole" <msole@loxinfo.co.th>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Saturday, March 14, 2009 7:03 AM
Subject: [TenTec] What sort of bandwidth do you like?


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







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