I see very few if any signals on the band that exceed -28 to -30 dB IMD on
the receive end. If you get a signal report that your IMD is -15 to -20 dB
then one should consider that there is a problem with the configuration and
or transmitter.
We are speaking of typical of PSK-31 IMD levels being -25 dB down from 30
watts, not 100 watts.
73
Bob, K4TAX
----- Original Message -----
From: "Jim Brown K9YC" <k9yc@audiosystemsgroup.com>
To: "Bob McGraw - K4TAX" <RMcGraw@Blomand.net>; "Discussion of Ten-Tec
Equipment" <tentec@contesting.com>
Sent: Tuesday, March 18, 2008 11:23 PM
Subject: Re: [TenTec] OmniV and PSK31
> On Tue, 18 Mar 2008 21:18:13 -0500, Bob McGraw - K4TAX wrote:
>
>>I am very pleased with
>>the IMD reports of -25 dB or better with the PSK-31 mode.
>
> FWIW, -25 dB is not that great. 25dB down from 100 watts is 0.25
> watts, enough to QRM a weak signal.
>
> 73,
>
> Jim
>
>
>
>
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