Collin Waldroff
October 2nd, 2005, 03:57 PM
I've shot over 15 weddings so far this summer and had nothing but problems with my WMF Pro lav mic. I thought I had it figured out, but at the next wedding had the same problems, hissing and interference. So I borrowed a better mic system, Shure T1-CE trans / VP3 receiver, but the same hissing . . . until I moved the transmitter cable away from the camera. ??? I use a GL2 and I thought I was getting some feedback from the camera, so I did some testing at home today and found some strange things happening. I use brand new batteries, so that isn't the issue. And distance isn't the issue because I've had the interference from as close as 5 feet. Tell me why this happens:
1. When the cable on the transmitter is wrapped/coiled up I get hissing and popping (loss of signal). There is no antenna on the WMF transmitter, so that leads me to believe the cable acts as an antenna? Right? I usually get the groom to coil the cable up and put the transmitter in his inside jacket pocket, so I should probably clip it to his belt so the cable extends??
2. When I wrap the receiver cable around the left side of the camera, underneath the lens, and up to the input, I get interference. Not so when it's just hanging free on the right side. So is that some kind of magnetic interference from the camera??
3. I've also experienced complete loss of signal when the receiver cable is wrapped around the lens and then I touch the cable with my fingers. ??? So my body must be acting as interference??
4. I've also noticed if I change the position of the camera/receiver by even a couple of inches and that can create or eliminate interference. I didn't realize VHF was that sensitive. ???
Thanks for any help.
BTW, here's some of the work I've done. (go to highlight section)
www.northwestvp.com
1. When the cable on the transmitter is wrapped/coiled up I get hissing and popping (loss of signal). There is no antenna on the WMF transmitter, so that leads me to believe the cable acts as an antenna? Right? I usually get the groom to coil the cable up and put the transmitter in his inside jacket pocket, so I should probably clip it to his belt so the cable extends??
2. When I wrap the receiver cable around the left side of the camera, underneath the lens, and up to the input, I get interference. Not so when it's just hanging free on the right side. So is that some kind of magnetic interference from the camera??
3. I've also experienced complete loss of signal when the receiver cable is wrapped around the lens and then I touch the cable with my fingers. ??? So my body must be acting as interference??
4. I've also noticed if I change the position of the camera/receiver by even a couple of inches and that can create or eliminate interference. I didn't realize VHF was that sensitive. ???
Thanks for any help.
BTW, here's some of the work I've done. (go to highlight section)
www.northwestvp.com