LF: info about better digital mode in 2200m band

[IK1WVQ Mauro <ik1wvq@stmb.it>]

Hi,

what is the better digital mode for starting listening 137 KHz 
band  as "reverse beacon" (no TX)??
("better" = greater number of active stations in Europe)

WSPR ?? LENTUS ?? OPERA ??

what frequency is utilized for those modes ???

thanks in advance to all ..

73 de Mauro IK1WVQ

P.S.: my RX station is : PA0RDT 8 meters over the roof, RACALL 1792 
.. not great station at all ..
in QRSS mode the only station what I can receive is the "broadcast 
(HI!)" beacon of Stefan DK7FC .. NO OTHER ...