No subject

how usable it would be with a DCF77 timing receiver.
I have no experience of reception in Frankfurt though so can't help  there.
 
HKW-Elektronik produce a range of timing related products, I have a Galleon  
timing module based on their parts, and amongst these they have tuned  
antennas for both DCF77 and MSF.
They might be able to advise on your reception posibilities.......
 
_http://www.hkw-elektronik.de/shop_en/shop_assemblys.php_ 
(http://www.hkw-elektronik.de/shop_en/shop_assemblys.php) 
 
regards
 
Nigel
GM8PZR