Re: LF: 8.97 kHz Grabber online (9 kHz line)

["Markus Vester" <markusvester@aol.com>]

ah, maybe my answer missed your point - the peak in the frequency response is simply due to the preselection filter.

 

Regards, Markus

----- Original Message -----

From: Markus Vester

To: rsgb_lf_group@blacksheep.org

Sent: Sunday, March 07, 2010 5:27 PM

Subject: Re: LF: 8.97 kHz Grabber online (9 kHz line)

Hello Mike,

 

this is most likely intermodulation from the 9 kHz raster in the European MF and LF broadcast bands. Viewed in detail, it is not a single carrier but a conglomerate of closely spaced lines, probably due to non precise BC carrier frequencies.

 

Best 73,

 

Markus, DF6NM

----- Original Message -----

From: Mike.WE0H

To: rsgb_lf_group@blacksheep.org

Sent: Sunday, March 07, 2010 5:17 PM

Subject: Re: LF: 8.97 kHz Grabber online

What is that big signal at 9.00kc?

Mike
WE0H