Try switching all the ports to 10-BaseT and see fi noise goes away. On Thu, Jun 8, 2017 at 1:25 AM, George Skorup <george.sko...@cbcast.com> wrote:
> That's all fine and good, but I pointed out that the contractor tied their > heliax to our conduit all the way up. That was about the dumbest possible > thing they could've done. There's cable hanger bars that are about 3 feet > wide and we're all the way to one side with our conduit. That's just > fucking lazy. > > On 6/7/2017 11:31 PM, Brian Webster wrote: > > The problem with this attitude to the fix, you as the WISP are now an > unintentional radiator interfering with a licensed service. This will get > you a visit from the FCC and you will be at fault no matter what. Because > you have equipment that is unintentionally radiating in licensed spectrum, > based on all FCC rules you lose and you get fined. This would be the case > even if you had no RF equipment on the site. That is why gear has > certifications for emissions for class a and b computing devices to assure > they do not radiate any unintentional RF signals. Once you install any > equipment like that outside the parameters the gear was certified under, > you become liable for the fines. > > > > As mentioned by others fix the problem, if they call the FCC you will be > screwed plain and simple. > > > > The school is not SOL because of your gear, you are. You are an unlicensed > system radiating on their frequencies…… it is your responsibility to > eliminate that interference as soon as you are notified and it is shown to > be your equipment causing the problem. > > > > Thank You, > > Brian Webster > > www.wirelessmapping.com > > www.Broadband-Mapping.com > > > > *From:* Af [mailto:af-boun...@afmug.com <af-boun...@afmug.com>] *On > Behalf Of *George Skorup > *Sent:* Wednesday, June 07, 2017 7:56 PM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Interference on a repeater at 149 MHz > > > > We have a local school district co-located with us on a water tower and > they're complaining about noise on their input. I pretty much told them > they're SOL until we need to add or replace cables since they're all in an > 1-1/4" PVC. So we'll have to run temp cables up, rip all the cables out of > the pipe and pull new ones. The village said we have to be in conduit. And > we do have a couple cables in use that aren't shielded. They didn't offer > to pay for it, so too bad. > > They're running a Kenwood repeater in an outdoor cabinet. Maybe 12U. > Obviously that's not going to fit the proper large can cavity duplexer like > a Sinclair. Plus they have >4.5MHz split, so no doubt that let them use a > smaller rack-mounted duplexer. > > So I'd be curious to know what the setup is on this 149MHz repeater. Are > they using a small crappy duplexer with a large split, too? > > On 6/7/2017 5:55 PM, Lewis Bergman wrote: > > I don't think so. I am assuming they probably didn't install some > connectors correctly. Unless they are using some extremely crappy gear the > RF portions of all half decent repeaters are shielded very well. Unless > they modified the repeater leaving some shielding off the connectors are > the most likely source. I guess there could also be punctures or some such > in the coax as well. > > > > On Wed, Jun 7, 2017 at 5:51 PM Jaime Solorza <losguyswirel...@gmail.com> > wrote: > > Lewis. You are assuming the VHF gear was properly installed...few folks > do right first time... someones laziness or lack of knowledge is another's > opportunity to make some cash > > > > On Jun 7, 2017 4:41 PM, "Lewis Bergman" <lewis.berg...@gmail.com> wrote: > > Has anyone checked their connectors/connections between all RF points? > Antenna to cable, cable to duplexer, duplexer TX/RX to repeater. > > > > Most of the time I have seen Two Way equipment either be interfered with > or interfere with someone else it is a connector issue. The only other case > I have seen issues should be able to be determined by an intermod study. I > doubt it has anything to do with intermod. My bet is a faulty connector. I > would assume it is the RX side so I would check the RX Repeater port to the > RX port on the duplexer and then the rest of the connectors. > > > > Not saying it can't be the the CAT5, just that if all is good on the > antenna system I haven't ever seen an issue and I have a lot of sites with > both two way and 900, 2.4, and 5GHz operating on all kinds of speeds both > POE and not. > > > > >
