Re: LF: 2200m Plots of the whole Band

["Graham" <g8fzk@g8fzk.fsnet.co.uk>]

#

 

US Experimental  licence Roger

 

02:25 73 WG2XRS de DL-SWL Op65 -43 dB F:9% in nr Wolfsburg

 

used the  1 hour version, that  was originally developed  for  136,

 

local copy of the  event ...

 

-23dB s/n	OPERA	0.073	08/12/2013 23:07	WG2XRS	W3NF
-20dBs/n	OPERA	0.073	08/12/2013 23:07	WG2XRS	K3SIW
-9dBs/n	OPERA	0.073	08/12/2013 23:07	WG2XRS	W1VD
-18dBs/n	OPERA	0.073	08/12/2013 23:07	WG2XRS	KB4OER

 

73-G,

 

From: Roger Lapthorn

Sent: Friday, January 08, 2016 8:42 PM

To: rsgb_lf_group@blacksheep.org

Subject: Re: LF: 2200m Plots of the whole Band

"for the 74kHz experiments 2 years ago"

What were these please?

73s

Roger G3XBM

On 8 January 2016 at 20:16, Hartmut Wolff <h-wolff@gmx.de> wrote:

Markus,

thanks for your reply.

Hartmut as you are fairly close to the DCF39 site, I would have expected even stronger sidebands in your spectrograms. Were these from your K9AY antenna pointing away from Burg?

Burg is in the minimum of the antenna at 120 degrees, about 30db down.

There is still a third turn on the antenna, which I added for the 74kHz experiments 2 years ago. Then I needed more gain for a better signal to thermal noise ratio.
For 2200m the third turn is not necessary. Only the IP2 signals are getting more worse.

73
Hartmut