On October 29, 2012 at 11:30 AM Andy Walls wrote: > > AFAIK both the TCL MFNM05-4 and the LG TAPE H001F MK3 are both clones of > the PHILIPS FM1236 MK3. The linux tuner and tuner-simple module treat > them identically. > > That's probably wrong, but without detailed engineering data on the > tuner assemblies, it is hard to know the proper mixer-oscillator / IF > demodulator AGC take-over-points (TOPs) to set for best noise > performance. > > Your options are: > [...] > > c) modify ivtv-tune.c to pause for a short while between > VIDIOC_S_FREQUENCY and VIDIOC_G_TUNER when scanning. It really is > probably just a matter of time to get a signal lock declaration is > different between the tuners. >
Andy, Thanks very much for your response. A few days ago, I tried the instructions at the following URL with CentOS 5. http://ivtvdriver.org/index.php/Howto:Radio_tuner With the tuner=43 parameter, the PVR-150 MCE card with the LG TAPE H001F MK3 tuner would scan much better. According to dmesg, the TCL MFNM05-4 tuner also uses tuner type 43. TUNER_PHILIPS_FM1236_MK3=43 TUNER_LG_NTSC_TAPE=47 I was thinking that I would try to modify the tveeprom.c file to map the LG TYPE H001F tuner to the 43 tuner type (instead of 47). However, it seems now that that change wouldn't make any difference. I will try to insert a short pause as described in option c and see if that helps. -- Aram J. Agajanian Computer Science/UNIX Support Academic Computing State University of New York at New Paltz _______________________________________________ ivtv-users mailing list [email protected] http://ivtvdriver.org/mailman/listinfo/ivtv-users
