[vdr] second card on loopthrough

[Robert Simons <robert@vis.ethz.ch>]

Hi,

I am playing with the idea to buy a second dvb card.
But I only have got one antenna cable (2 single universal 
lnb A/E). So this should work, if i stay at the same 
polarisation/band/satellite with both cards.
Is there any possibility to tell vdr not to switch
the first card out of this range while recording
on the second?
Has anybody tried this combination yet?

Gruss Robert.