Can't find a reliable channel in NYC

Here's the issue I am dealing with. I exported a little clip.

The RF Explorer calculator modes are: max hold, normal, max, average, overwrt. I've been using the max hold mode and picking the freq with the lowest prx level. Should I use another mode?

Here are the submenus on the attenuator menu
Top dbm: -60
Bottom dbm: -120
Iterations: 028
Offset db: -001
Units: dbm




j1clark@ucsd.edu said:
In any case, it seems you can narrow the bandwidth to 2 MHz,
Click to expand...

Does that mean I should set difference of the scan to 2? EX: scan between 548.00 and 550.00?

Thanks for all of your help!
 
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vladwolodarsky said:
Bump. Any ideas would be greatly appreciated. Thanks!
Click to expand...

I went to NAB earlier this week, but due to the exhibitor list I had, I was not able to see if the company which makes device you are using was there. I would have asked them about how to use the equipment, etc. and how to interpret the results.

In general New York City, is abysmal for RF. The buildings on the one hand occlude antennas, but a few steps to the left or right, may bring the signal strength up to be a problem.

While there's the often quoted 'light of sight', the problem is that in NYC buildings act as reflectors, building 'corners' act as 'knife edges', and so, there are situations where perhaps there is no actual line of sight, but due to these other effects, you still get an interfering signal. There's also a phenomenon called 'intermodulation' where two stations some what close to each other will produce RF outside of their standard operating frequency, which may cause interference.

I would hope someone who lives in NYC may be able to give more information on how they select channels, and what precautions they make to insure better signal.

In any case, I think with the device you have, and your RF mic equipment, you should just experiment for a number of days to 'learn' the lay of the RF spectrum.

People in LA have different problems because the powerful transmitters are usually placed on high mountains in the area, but most of the area from the sea to 100 miles inland is 'relatively flat' so one can see transmitters that are not in one's usual operating area, that may interfere.

I did stop by the Lectrosonics booth and had a brief discussion on the topic of their 'Digital Encrypted Wireless' package... the fellow told me that the device can cover the entire 'current' TV band, so, is somewhat future proofed against FCC auctioning off more of the TV band spectrum...

Since I don't have any access to this sort of equipment I have no idea if it would provide a better solution in the NYC RF environment or not... The booth person did indicate that there was Forward Error Corretion (FEC) so, one would hope that it can do better than analog FM in this regard.
 
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just the day before yesterday I was working inside (hotel lobby in the west Village) with a g3 (A) and handheld , no problem durng a couple of hours interviews and stage stuff. Then we had to step outside for a special (and very important) interview (without the crowd in the lobby and such) and.. nothing worked. I had to pull a cable. NYC is like that for UHf. So let's wait until june and try the new sennheiser 1.9GHz digital (now for camera mount too). It should work better (in NYC). No idea how far ,drop-outs and such, we have to wait and see
of course I have high expectations, because it's a sennheiser and away from the 2.4GHz of the other two digital systems (AT System 10 and Rode) that all the DJ use (also to control the lights).

http://en-us.sennheiser.com/news-se...wireless-microphone-systems-for-video-cameras
 
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