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Re: [TenTec] AM Receiver distortion in Orion II

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] AM Receiver distortion in Orion II
From: "Larry Menzel" <retire@means.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Tue, 23 Jan 2007 21:49:12 -0600
List-post: <mailto:tentec@contesting.com>
Man, Rich, with all due respect, I can't understand what you're hearing.

My Orion II has clear, clean audio, on all bands. It's crisp and easy to listen to.

I'm wondering how you have the AGC set, and more to the point, where your RX EQ is set. I find the high plus numbers do tend to muddy the audio, but at zero things sound pretty crisp.

My second question is what speaker(s) are you employing. I have both the Icom SP-20 and my computer speakers available to switch back and forth and the audio is very good on either. I've heard reports that the matching TT speaker is a poor performer without significant modification.

I'm no technician, and perhaps one of those guys will weigh in, but it's really curious to me that you'd find the OII generally muddy in character.

I'm not doubting your assessment, but I respectfully submit that maybe it's an individual radio issue, and not characteristic of the radio in general.

Others may disagree, but YMMV.

Larry, N0XB


----- Original Message ----- From: "Rich McCabe" <r.mccabe@ctiowa.com> To: "'Ron Castro'" <ronc@sonic.net>; "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Tuesday, January 23, 2007 5:02 PM
Subject: Re: [TenTec] AM Receiver distortion in Orion II


I find the Orion II audio muddy in general. Funny you would post this
because I am in the process of making an audio file to send service myself. Compared to the Pro III and Jupiter II, the Orion seems to have very little
audio response.

73,

Rich
Kd0zv

-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Ron Castro
Sent: Tuesday, January 23 4:55 PM
To: Ten Tec List
Subject: [TenTec] AM Receiver distortion in Orion II

One of the items on my "wish list" for the Orion II is to fix the AM receive
audio, which sounds to me like a problem in the DSP code that causes
distortion and 'muddy' sound.  It's most noticeable during selective fades
that cause a serious clipping effect. Last night, I made an MP3 of a local
AM radio station comparing the O2 to a TS-870, and sent it to TT service.
This morning, TT said they couldn't hear any difference between the two
receivers.  Is it my ears or what?  The link to the clip is below.  The O2
is the first 60 seconds and the 870 is the second 60 seconds. Bandwidth on the O2 is 6 kHz, while the 870 is 3 kHz, although as you'll hear, it sounds
just the opposite!

http://n6ie.com/OrionII_vs_870.mp3

Can anyone besides me hear the difference?

     Ron N6IE
www.N6IE.com
(Formerly N6AHA)
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