I have the SOny transmitter UTX-B1 and the Tuner URX-P1. I changed the groups, channels and frequency according to the Appendix manual. I tried many different settings but there is still some noise. And also, how do you know which group you should choose for the frequency and channels? Thank you

HI. I guess you mix the expression channel with number. The "channel" is the division in "places" for each transmitter in the entire TV frequency spectrum. The "number" is just the preset number one gives to a certain channel stored in the TV. F.i. on can use number 50 to channel 4, which it the last channel in the lower VHF band.
When you to to "manual" tuning, and you select "4", then you may receive this channel, and assign it to any number you choose between 0 and the max presets possible. (mosly 99). After storing, you can choose another "channel ". It is also possible to choose in H or S. H are the regular B1, BIII, UHF channels. (rsp. 2-12, 21-69). The S band contains frequencies in between and above these bands.
Hope this explanation is of any help to you.

The Helicopter channel/frequency may need changing to match the channel/frequency on the transmitter.
OR change the transmitter channel/frequency to suit the helicopter.

These numbers are the LCN (Logical Channel Number) assigned by the broadcasters. It will only be at 350 if it is the same channel from a different transmitter. You need to know the 'channel' of the frequency to manually tune it in. You are talking about the program number not the channel (frequency), a common mistake. i.e ABC in Sydney is transmitted on CH12 (226.5Mhz) and the LCN's for each program are 2,21,22,23,24,201 & 201. If your antenna also picks up the signals from the Kings Cross transmitter ABC is CH30 (543.5Mhz), as these are later in the spectrum they are put in the LCN list starting at 350.

FixYa.com doesn't "carry" any manuals, but you can download the one that you're looking for here:

http://pdf.textfiles.com/manuals/STARINMANUALS/Sony%20Mics%20and%20Wireless/Manuals/UWP-C1,%20UWP-C2,%20UWP-S1,%20UWP-S2,%20UWP-X1,%20UWP-X2.pdf

You have to program it TRUNKING mode when you enter the control channel frequencies. It is decoding okay as the MO shows motorola control channel and +DG means digital decoded and an OPEN group. You need to press the 'trunk' button everytime a talkgroup comes up that you want it to remember for future 'closed' group (-DG) talk groups. I suggest you go to 'RadioReference DOT com" and there are many forums there for your radio, as well as one or two YAHOO GROUPS specifically for your scanner. 73's

there was a loose connection in the microphone wire that needed to be resodered.
thanks Paula

It sets the channel according to the frequency they are on, If you don't have any channels below those numbers and are connected to Cable TV, you have a bad tuner

The UTX-B1 input is not a stereo jack, and the receiver output is also not a stereo jack. Only the receiver Headphone/Monitor jack is stereo.

Not sure if you are sending stereo signals from or to the camcorder. But you can try mono-to-stereo adapter.

Hope it helps!

Sounds like some type of manufacturer's flux problem. As an ex-Sony pro dealer we saw something like this years ago. You might want to contact Sony support (industrial or broadcast, not consumer) and see if there is a technical bulletin out on this problem.