I have a repeater on 462.725 and there is a trunking repeater control channel very close to me on 462.7375 that comes through full signal. What are the chances of that system interfering with my repeater?
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Close Interference
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I'm in your general area & know the trunking repeater you speak of. Key up, I'll tune my 536 to your frequency & let you know if I pick you up & if any interference
Are you 662 DCS?
mmckenna
I ♥ Ø
Close as in distance?
Any chance you can move to another GMRS pair for your repeater?
We have a user that says his signal indicator stays spiked and it's wiping out his front end. We found a 100w control channel 7 miles away closest consistent signal on .7375, I didn't think it would interfere but not sure with it being a lower quality radio if it's picking it up or something else local.
mmckenna
I ♥ Ø
Anytone 778
That's what is known as a CCR (Cheap Chinese Radio), and as @mmckenna said, they are not known for handling strong RF. I'm guessing this isn't happening on other real radios?
I don't hear it on my moto or Kenwood's, but something like the Anytone could pick up signal from .7375 on .7250?
Correct, because those are real radios. The Anytone could absolutely pick up something that close in frequency. The front ends are pretty much wide open on those radios with little to no filtering. Very common for the CCRs to be completely overloaded like that.
Do you think it would be smarter for him to go after another radio before we attempt to switch the repeater frequency?
As well...I believe that is an amateur radio, with no other type acceptance (besides Part 15, for the receiver). Your user is using it illegally on the GMRS frequencies.
Absolutely! If he is the only one experiencing those issues, that sounds like his problem. What you could have him do is switch to another pair on his radio, without changing the repeater, and see if he is still having his receiver wiped out. Choice #2 of course is to tell him to purchase a real radio that is actually type accepted for Part 95.
We have used other repeaters, and he doesn't seem to have that problem. What do you recommend for a less expensive radio that has a better front end that won't get wiped out by off frequency signals?
mmckenna
I ♥ Ø
You could change repeater pairs, but a crap radio is a crap radio, and eventually the frustration will build enough that they'll get a -real- radio, not a Chinese polished turd. Might as well let the owner figure that out now, rather than everyone else go through the gyrations to appease someone with an unsuitable radio.
Not to bash the guy, but there's a lot of good reasons that those of us who do this stuff professionally have a dim view of the Cheap Chinese crap. I know, it's a hobby for most and disposable income can be hard to come by, but there gets to be a point where one gets what they pay for. There are some very suitable professional radios that will handle this sort of adjacent channel stuff much better than the CCR's.
Could someone point me in the direction of where I could send him towards a better radio?
ak7an
Member
A lot of Kenwood TK-8180's available for a reasonable price.
mmckenna
I ♥ Ø
For GMRS, it's hard to beat the Kenwood TK-8180 mobile. The 30 watt 450-520MHz version has FCC Part 95 certification, which would make it legal on GMRS. It'll have some -real- filtering, so it'll work well in high RF environments. The KPG-89 software is one of the easier softwares to learn.
Easy to find on the used market, and good solid radios. Will easily outperform the CCR's all day long.
MTS2000des
5B2_BEE00 Czar
Anything made in the last 20 years from Icom, Kenwood, Motorola, L3 Harris that is land mobile will mop the floor with a Chinaturd radio performance wise. This is why turdpile radios based on consumer grade "walkie talkie on chips" suck. Even a 40 year old HT600 out of alignment beats one of these feces pieces radios.
cavmedic
Member
Whats the call sign of said repeater 7 miles away? The only thing for PA thats showing in the ULS that is licensed would be from TU-Way communications and its transmitter location is licensed in North Hampton County .
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