Hello Geri,
I too heard these signals..

73
Andrey


... sweep changed the sweep time a bit, stopped in the middle of the sweep band 
and has just stopped now.

73

Geri, currently OM/DK8KW


On 09.10.2012, at 02:51, Holger 'Geri' DK8KW DI2BO W1KW <[email protected]> wrote:

Hi Group,

Someone is making extensive use of the DCF39 frequency, including parts of our 
LF band at the moment.

I am listening using the Twente SDR and there is a strong sweeping signal starting at 136.5 kHz and moving over to 141.5 kHz, 1 KHz per second or so. Maybe the guys at DCF39 are re-tuning their antenna?

Vy 73

Geri, currently OM/DK8KW (hence the use of the Internet-SDR, the only RX I always carry with me, an ICF-SW07, doesn't reach down there)

On 08.10.2012, at 22:09, Stefan Schäfer <[email protected]> 
wrote:

Right now DCF-39 is offline! In case someone wants to make some tests!

73, Stefan