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Interference from GMRS?


WSAE510

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7 minutes ago, WSAE510 said:

I'm wondering how could GMRS cause interference with Ham radio? I've been hearing a lot about this and it seems like ARRL has been barking about this. Has anyone heard about that?

No, I haven’t heard that. Where did you hear that?

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GMRS should not interfere with the 2m or 70cm bands. Yes GMRS is close to 70cm but they should still not interfere. The local amateur radio club I belong to has their 2m, 70cm and GMRS repeaters and antennas all on the same tower and we don't have any issues. Plus many of us have 2m/70cm and GMRS radios in our home and vehicles without any issues.

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12 minutes ago, WRYZ926 said:

GMRS should not interfere with the 2m or 70cm bands. Yes GMRS is close to 70cm but they should still not interfere. The local amateur radio club I belong to has their 2m, 70cm and GMRS repeaters and antennas all on the same tower and we don't have any issues. Plus many of use have 2m/70cm and GMRS radios in our home and vehicles without any issues.

Thank you for the informationn

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1 hour ago, WSAE510 said:

There was a discussion that went around a few days ago and the ARRL posted a statement that went back to 2017

See, this is how rumors start.

One “statement from 2017” hardly counts as “ARRL has been barking about it.”
2017 was when the FCC overhauled the regulations for GMRS. Whenever a large rule change like that is made comments are requested as part of the proposed rule making. It may be that the “statement from 2017” was in response to that. 

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On 2/25/2024 at 1:16 PM, WSAE510 said:

I'm wondering how could GMRS cause interference with Ham radio? I've been hearing a lot about this and it seems like ARRL has been barking about this. Has anyone heard about that?

This is one of the reasons that GMRS and Business/Public Safety radios are required to meet technical specifications for spurious emissions (Part 90 & 95). GMRS is pretty far away from the 70cm ham band. In fact, 70cm ham is co-located with plenty of other users (US military, radar, unlicensed transmitters like weather stations), that ham just has to deal with. There are plenty of public safety/business users between the top of the ham band (450) and GMRS, that GMRS is one the least likely to cause issues.

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