Brunswick county repeater problems back

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drew6553

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Here we are, back to square one with the problems on brunswick county ems Repeater. same undecipherable hissing and squelching etc from whatever the source. i believe emrgency managment was blaming it on a USCG bouy. well ever since before the storm hit, the problem has returned only on steroids. we might have 30 minutes a day of useable airwaves on the frequency a day. otherwise rescue/ ems is only being paged on the rescue repeater but having to have all working traffic on fire repeater. And if you think firefighters here talk alot you should hear our ems! it's like a dogpound. Good lord i wish we would get away from this piece of crap system we've blown our money on and jump onto the viper frequencies liscensed for brunswick county
But that would make sense and our emergency managment cant do that now can they?
Drew
 

radiotrack1

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Radio Problems

What frequency is this hissing occuring on. I have tracked several stray signals in Robeson County and spend time every now and then in Brunswick.
 

jeffmulter

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>> 155.745 which is liscensed as our county ems and rescue dispatch channel

If dispatch is able to overide the problem signal, but you can't maintain unit-to-unit communications, the interfering signal is likely on - or near - or a harmonic of - the repeater input.

The input to the 155.745 repeater appears to be 153.785 MHz. The input tone - if any - is unknown, although 186.2 Hz is probable.

I would think it's more-likely that a transmitter sending SCADA or other data on 153.785 or a neighboring splinter frequency is the offender. We are in tropo season right now, and the offender could be anywhere up or down the Atlantic Coast. A data signal would provide the kind of interference you describe.

( Just out of curiousity, I looked at the FCC database licenses on 153.7775 and 153.7925 for NC, SC, Va and Ga. I saw nothing that could be identified as a source for your interference. I'll leave the search on 153.785 to someone else ! )


Jeff Multer
 

drew6553

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according to our wonderful emergency management. it is due to a uscg beacon in the atlantic near the coast of little river SC. Thet asked the uuscg nicely to help fix it. but they havent really put any force behind the request so i dont know maybe eventually with the new ltr system they'll move all rescue and ems to oak islands ems channel. ut who knows we'll see soon cause according to everything the ltr system will be up in november ish
 

radiotrack1

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Brunswick repeater problems

I was in Holden Beach this past weekend and didnot hear anything out of the ordinary. If the problem is a USCG becon it should have the interference all the time also it has to be close to the repeater input frequency and have the correct PL tone to intefere with the repeater. If you can record the noise I would like to hear it so I could possibly help resolve this. And yes normally the com center has a direct link to the repeater either by phone line or some type of wireless link that way they can over ride any signal comeing into the repeater and they can still broadcast over the repeater.
 

drew6553

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dang you had to ask me now didn't you? i deleted a copy of the noise not 2 days ago i'll get it ASAP
 

radiotrack1

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repeater problems

I was down in shallote this past weekend and still have been unable to hear it. By it not causing an ongoing problem ie.. dialy problems or at least weekly interference I do not feel that it is a beacon of any type because that signal would not change and would keep causeing problems unless maybe it is skip coming in only at certain times. If it is skip the becon could be upto 150miles away. The best times of this happening would be early morning hours from 2:00 am to about 9:00am. Drew have you heard it anymore??
 

BryanTheRed

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I was thinking skip as well, also if it was the beacon I guess the USCG could have actually put a rush on fixing it if it was interfearing with PS communication???
 

CCHLLM

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There's the possibility that if it IS skip, it could be one of the narrowband telemetry channels in the 155 range that is relaying digital weather/water & sewer/traffic, etc., data. One of the offending freqs could be 155.7425, IIRC, and that would be indistinguishable from an on-freq signal to the average wide front end that scanners possess. Some of the digital signals sound like squelch noise on analog receivers.
 
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drew6553

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well it might also be connected with a gremlin in the crappy radio system cause the noise was also happening for the first time today on the fire repeater
 

drew6553

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no my scanner and portables are one most of the time but it seems like every time i got to record it it dies and then nothing for 2 or 3 hours or more so i forget
 

BryanTheRed

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alright BTW help me as a moderator on this yahoo group the link is in the other post in the forum!
 

BryanTheRed

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yup need some dependable people, plus I have seen you in action on this board and think you have the mentality to do it!
 
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