Using ProgDVB with Hauppauge HVR-930c in DVB-C mode.
All the 6875 QAM channels were succefully scanned with ProgDVB but the specific group of channels located on:
MHZ: 425
Symbole Rate Kbauds: 6877
QAM: 64

I tried several times but it doesn't get any channels.
On my DVB-C receiver (for TV) the channels are real and working
So what's the matter? is it the hauppauge device that can't scan them or some additional infos I have to add in ProgDVB?
Please I want to know so I can return the DVB-C tuner before Tuesday in case it's the problem

Try Search-> Manual Scanner

I tried it but no signal or channels found!
Could it be because Kbds 6877 is not supported by either ProgDVB or Hauppauge hardware?

May be signal to low for this mux.
Do you have problem with software from device CD?

Yep same problem with wintv, I can scan all the 6875 and 6772 kbds but not 6877,it's crazy because I can see them on my TV's receiver and signal is strong enough...

TV receiver is other device with other tuner.

Yes but all the settings (QAM,kbds,MHZ) I am using on the hauppauge tuner are the same and working,only this 6877 kbds is not recognised.
I think I will return it tomorrow,I bought it for these specific channels because my TV receiver can't show pic of h264 channels,but if it can't scan them,it's useless