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Author Topic: Long distance (2500 ft) Wireless Audio Transmission  (Read 6144 times)

Steve Payne

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #10 on: November 15, 2016, 05:41:51 pm »

....  Damn this getting old thing is getting old.

Ain't so bad when you consider the alternative.  Keep on keeping on there, buddy.  :-)
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Steve Payne
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Elliot Carroll

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #11 on: November 15, 2016, 05:58:11 pm »

Hey Luke,

You can reach these distances by using the technique called point to point with a Shure PSM900 unit as the transmitter, and a Shure UHF-R as the receiver. We use this all of the time for large scale events that we want a wireless solution. just Google "Shure point to point" and you will find a PDF that explains how to put the PSM900 into the PTP mode. Obviously the two units must be tuned to the same frequency, so they must be in the same freq. range. Helical on the 900 and high gain paddles on the UHF-R and you will be good to go.

I hope this helps. Let me know if you have any questions.

+1 to this, although it was a PSM1000 and UHF-R that was used.  Helical both ends to keep the pattern as tight as possible as long as possible.  Used successfully many times.
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Elliot Carroll
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David Sturzenbecher

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #12 on: November 15, 2016, 06:11:48 pm »

+1 to this, although it was a PSM1000 and UHF-R that was used.  Helical both ends to keep the pattern as tight as possible as long as possible.  Used successfully many times.


I would caution blindly using this approach.  The transfer function of this setup is far from flat...at least compared to the Lectrsonics setup described above.


Sent from my iPad using Tapatalk
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David Sturzenbecher

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #13 on: November 15, 2016, 07:05:58 pm »


I would caution blindly using this approach.  The transfer function of this setup is far from flat...at least compared to the Lectrsonics setup described above.


See picture for some transfer functions a colleague of mine took.

Green - Loopback
Yellow - Lectrosonics Wireless Measurement Mic Test Equipment (HM Transmitter - R400a Receiver)
Purple - Shure Point to Point (UHF-R and PSM900)

Looks like the measurements were taken with -4dB as normalized.
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Luke Robinson

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #14 on: November 15, 2016, 08:18:55 pm »

I looked at the specs for the Shure point to point, and though better than just using an IEM system alone it still says that its range tops out at around 1600ft, thats not quite enough for me. I think i found someone locally with the lectrosonics stuff, I am going to reach out tomorrow.

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Roland Clarke

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #15 on: November 16, 2016, 07:27:36 am »

We have a reoccurring gig each year that involves a parade of boats decorated for christmas on a river. This year we have been asked to transmit the audio from the announcer to both sides of the river. The second location is about 2500 ft from the first according to google maps.

We have clean line of sight and are elevated about 30-40 ft above the river on both sides.

Usually I use an IEM system for delay towers and the like but they seem to max out between 300 and 400 ft. I clearly need more power here.

Does anyone know of a solution for transmitting audio over this kind of distance cleanly?

Thanks,
Luke

Why don't you Podcast it or use Facebook live? This is half a mile, surely sync timing isn't that much of an issue?
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Tim Woodworth

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #16 on: November 16, 2016, 06:35:43 pm »

We transmitted around 3500 ft. in one direction and 3500 ft. in the other direction. Covered over a mile by having our command center in the middle of the span needed to cover. Shure did an article about it on their website that I am sure you can find via google. I am sure that the spec that they say it will cover is a "safe" distance. We covered WAY more distance than that. We put the send and receive antennas up on genie towers so that we had line of sight to every tower and we had no issues and even had full bars on the zone that was 3500ft away.

Good luck!

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Tim Woodworth
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David Buckley

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Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #17 on: November 20, 2016, 04:41:39 pm »

You should be able to find a rental house that has kit to do this, probably using equipment with significant output power, and they'll have the licensees to use it.  Also, you wont be in the whitespace bands where some other oik with a wireless mic near your receive antenna will wipe your link out.
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ProSoundWeb Community

Re: Long distance (2500 ft) Wireless Audio Transmission
« Reply #17 on: November 20, 2016, 04:41:39 pm »


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