.. this is the cross modulation signature on the RN3AGC grabber. The pattern
was also visible on F1AFJ's screen. - 73, Markus
----- Original Message -----
From: "Markus Vester" <[email protected]>
To: <[email protected]>
Sent: Thursday, January 15, 2009 12:52 AM
Subject: LF: Re: WSPR beacon on 136kHz, Luxembourg
The band is fairly quiet tonight. Twice for a few minutes around 23:23 and
23:33, there were strong Luxembourg sideband carriers
simultaneously on both HGA and DCF. They were apparently caused by a 1054 Hz
sinusoidal modulation test tone (sidebands at 136.484,
75 uV/m and 137.776 kHz, 13 uV/m). There was also a -20 dB second harmonic component (137.538, 6 uV/m and 136.722, 1.5 uV/m), due
to
the square-law charasteristic of the heating effect.
Kind regards,
Marksu, DF6NM
rn3agc_Luxembourg_090115_0014.jpg
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