Reely340

Has anybody got an idea where the interference in the center of that video snapshot might originate from? I'm amazed by the almost digital look of the bright/dim changes and the very sharp vertical boundary of the interference. At app. 120 black/white changes per line, the frequency would be: 625 (PAL) x 25 fps x 120 = 1.875 MHz given the vertical span of 1/10 of 576 visible lines the duration is 625/(576/10) x 1/25 = 3,5ms interference duration. 1.875MHz for 3.5ms, does that ring any bells? The setup: test inside residential building, distance 8 yards, one wall in between, sign

I've read about gaining 3dB or so from doing the saw filter mod. I think I understood that the reduced bandwidth gives better reception qualities to the receiver. IIRC people were switching to the ECS-D480A saw filter which has at 3dB a pass bandwidth of only 17.6MHz and comes with the usual insertion loss of 19-20dB. BUT I was wondering whether the gain for the receiver could much bigger when using a [b]low insertion loss saw filter like the VANLONG SF480 which has a rather normal 22dB bandwidth but comes with only 2.5dB insertion loss! Wouldn't that mean the signal is not dampe