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Re: [TenTec] Orion and RX-320 on DRM

To: <tentec@contesting.com>
Subject: Re: [TenTec] Orion and RX-320 on DRM
From: "Carl Moreschi" <n4py@earthlink.net>
Reply-to: tentec@contesting.com
Date: Fri, 1 Oct 2004 07:28:56 -0400
List-post: <mailto:tentec@contesting.com>
Mark,

Yes, the cap is attenuating the signal.  Normally caps are used to bypass RF
signals for audio signals.  A 0.1 cap is large even for 12 kHz.

Carl Moreschi N4PY
Franklinton, NC
----- Original Message -----
From: "Mark Erbaugh" <mark@microenh.com>
To: <tentec@contesting.com>
Sent: Thursday, September 30, 2004 11:53 PM
Subject: [TenTec] Orion and RX-320 on DRM


> I have modified my Orion and my RX-320 to make the IFs available to use
with
> the Dream DRM decoding software.
>
> Listening to the RCI (Canada) DRM broadcast directed to NE USA this
evening
> and using the same anteana. The Dream software reports a signal to noise
> ratio.  The best I could get with the RX-320 was about 16 dB S/N which
> resulted in marginal DRM reception.  The Orion was 24 dB which was almost
> perfect reception.
>
> I know the Orion is a better receiver, but is this difference to be
> expected?  I am taking the IF's directly from the receiver insidee the
> respective radios. The only difference is that I put a 0.1 uF cap across
the
> output of the RX-320, I didn't do that with the Orion.  Do you think
> removing the cap would help?
>
> 73,
> Mark
>
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