It also depends on band noise strength. If the band noise is strong enough,
it will cover up the rs232 noise. And it also depends on what program is
running and how often it polls the Paragon and sends rs232 messages.
Carl Moreschi N4PY
121 Little Bell Drive
Hays, NC 28635
----- Original Message -----
From: "Vic Klein" <firstname.lastname@example.org>
Sent: Monday, December 13, 2010 7:47 AM
Subject: Re: [TenTec] Paragon II RS-232 Port
>I had never heard anything like this on my 585 Paragon, and I often use the
> RS-232 port for logging or computer control (and it is always connected to
> the computer). After reading Carl's post I tried to find noise and was
> finally able to hear some computer RFI, but not a scratchy noise. With the
> antenna essentially disconnected I could hear some tones between commands
> while everything was waiting for input on some frequencies on 10m. While
> radio was being commanded or responding with status it was quiet. With the
> RS-232 plug disconnected I could still hear them, but they were extremely
> faint or non-existent. Normal band noise has covered these artifacts up
> until I searched, and I hear nothing in normal conditions. Could the OP's
> trouble be computer-specific? In other words, have you tried another
> computer to see if that is causing the excess noise?
> To: "Discussion of Ten-Tec Equipment" <email@example.com>
> Subject: Re: [TenTec] Paragon II RS-232 Port
> From: "N4PY2" <firstname.lastname@example.org>
> Reply-to: N4PY2 <email@example.com>, Discussion of Ten-Tec Equipment
> Date: Sun, 12 Dec 2010 12:51:56 -0500
> List-post: <firstname.lastname@example.org">mailto:email@example.com>
> It's typical and normal for the Paragon's. You are hearing the noise from
> data on the RS232 port.
> Carl Moreschi N4PY
> 121 Little Bell Drive
> Hays, NC 28635
> ----- Original Message -----
> From: "KA6UUP" <firstname.lastname@example.org>
> To: <email@example.com>
> Sent: Sunday, December 12, 2010 12:47 PM
> Subject: [TenTec] Paragon II RS-232 Port
>>I tried hooking the Paragon up to a computer / Ham Radio Delux via the
>> RS-232 port the other day and was successful.
>> However, there was a very noticeable "scratching " noise present in the
>> speaker audio.
>> Using the computer keyboard had an effect on the noise and so I assume
>> this is computer interference getting into the radio
>> through the RS-232 circuit.
>> Is this typical?
>> Is there a fix for this or must I just get used to it?
>> Tnx es 73,
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