Which wireless band to choose, in US, for new Sennheiser EW-D products

If I search for "Sennheiser EW-D" on Sweetwater, I see three units which appear to operate on different bands:

https://www.sweetwater.com/sto…php?s=Sennheiser+EW-D+CI1

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EW-D CI1 Wireless Guitar System - R4-R9

https://www.sweetwater.com/sto…eless-guitar-system-r4-r9

System: Frequency Range:552-608 MHz
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Sennheiser EW-D CI1 Wireless Guitar System - R1-R6

https://www.sweetwater.com/sto…eless-guitar-system-r1-r6

System: Frequency Range: 520-526 MHz

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Sennheiser EW-D CI1 Wireless Guitar System - Q1-Q6

https://www.sweetwater.com/sto…eless-guitar-system-q1-q6

System: Frequency Range: 470-526 MHz

Sennheiser has a wireless frequency tool on their website, which appears to be broken. I don't see anything on https://www.fcc.gov/wireless/b…sion/wireless-microphones saying I could not use any of those, but I also haven't had enough coffee yet. Operating in the United States, how would I know which of those three models to choose?

Also, if anyone has a good Sweetwater rep who responds to emails, please let me know. Thanks for the help.

Quote from ST

Hi, Patrick.

See: Sennheiser - International Frequency Advisor

Also - if you hit up Sennheiser via Direct Message on Facebook, Twitter, LinkedIn, or Instagram. They will help.

Thanks a lot ST. I think that's what I was needing. Based upon that, I think the best choice is:

EW-D CI1 Wireless Guitar System - R4-R9

https://www.sweetwater.com/sto…eless-guitar-system-r4-r9

System: Frequency Range:552-608 MHz

The Sennheiser EW-D CI1 Wireless Guitar System - R1-R6 has a smaller band, within that band. Sennheiser EW-D CI1 Wireless Guitar System - Q1-Q6 looks like it may have issues in some states and have licensing issues.

Quote from ST

Patrick.

Check out the chart (from the web page link above).

Avoid the frequencies that overlap with local TV stations nearby.

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Thanks again. I think I'm going to order the EW-D CI1 Wireless Guitar System - R4-R9 and hope for the best. Probably going to hold off a bit. My next gig is kinda away from the nearby cities, so it probably wouldn't be a good test. Probably want to order it to coincide with one of my gigs in more of a downtown area.

This looks like it has the frequencies on it, if anyone else had a similar question:

https://www.channelmaster.com/…free-tv-channels-by-state

Quote from JEverly

My Sweetwater rep is Mike Godlove. He is pretty knowledgeable. I would contact him if you want to be able to ask questions to someone that can give you some information over the phone. Certain frequencies usually work better in specific areas. I know Shure used to have the regions listed on their web site years ago to assist with selecting the one for your area.

Thanks. Just sent an email to a different one. If I don't get a reply from him in two days, I'll your guy.