I can only imagine the headache it will take to reach anyone clueful at FBI, I read they don't even use FCC but rather ntia spectrum...
On Wed, Jul 23, 2025, 3:38 PM Ken Hohhof <[email protected]> wrote: > You could call the FBI and ask about the 7 GHz link, but then your next > email might come from CECOT. > > > > Actually, FBI and ATF have some equipment on a site we’re on and years ago > I was there at the same time as some of their guys and they seemed really > nice. > > > > *From:* AF <[email protected]> *On Behalf Of *TJ Trout > *Sent:* Wednesday, July 23, 2025 5:25 PM > *To:* AnimalFarm Microwave Users Group <[email protected]> > *Subject:* Re: [AFMUG] 6ghz (lower) interference > > > > Yes it's clean, only a tiny -85 carrier (link is -38 RSL) but I am > starting to think that maybe the interfering carrier is not being detected > by the radios integrated spectrum analyzer... Might need to do a secondary > scan with an external device. > > > > around the time the radio started having issues the FBI installed some > type of equipment on the same site, not sure if it is related but it looks > like two sector antennas for land mobile radio? And also a 7ghz cambium > link. I haven't had any luck in locating these transmitters in FCC ULS. > > > > On Wed, Jul 23, 2025, 1:04 PM Josh Luthman <[email protected]> > wrote: > > Did you do a spectrum scan? > > > > On Wed, Jul 23, 2025 at 3:55 PM TJ Trout <[email protected]> wrote: > > Also only one side receiver is showing errors but the modulation is > affected in both TX directions. SNR and RSL remain unchanged since install! > > > > On Wed, Jul 23, 2025, 12:53 PM TJ Trout <[email protected]> wrote: > > So this 6ghz link is still acting up, connects at 4096 qam and demodulates > to each lower order modulation step by step about every 1 second, once it > reaches the lowest modulation it drops connection and immediately repeats > the same behavior again. I've replaced both radios and performed spectrum > analysis and found no interference. One side we replaced the DC power > supply and the other side has many links but this is the only link > misbehaving. > > > > Working with the mfg (aviat) but even they seem baffled at this point. > > > > Link was installed 5 years ago and performed flawless with no > configuration changes since installation. > > > > Maybe the borg can help? > > > > On Wed, Jun 18, 2025, 10:15 AM Ken Hohhof <[email protected]> wrote: > > Unlikely, but something that occurs to me is that if I remember correctly, > unlicensed 6 GHz CPE radios are allowed to transmit at +30dBm EIRP while > trying to contact the AFC, and then at +36dBm if given permission by the > AFC. So it’s not like they can’t transmit at all without OK from AFC, or > are limited to very low power like indoor CPE. > > > > I think they first need to see the AP, which needs AFC permission, so a > total screwup seems unlikely. > > > > *From:* AF <[email protected]> *On Behalf Of *Eric Nielsen > *Sent:* Tuesday, June 17, 2025 7:33 AM > *To:* AnimalFarm Microwave Users Group <[email protected]> > *Subject:* Re: [AFMUG] 6ghz (lower) interference > > > > Send me a PM with the coordinates and/or callsign of the receiver that's > getting the interference. I'll run the site and tell you if I see anything > in the general area that could be suspect. > > If the link continues to receive interference, like others said, you > should run a frequency scan to identify the interfering emission and its > bandwidth. If the bandwidth is 40, 80, or 160 MHz, that's probably > unlicensed. > > > > Lastly, if the problem persists, you should report it through the AFC > interference portal: www.afcoperators.org > > > > On Mon, Jun 16, 2025 at 4:53 PM TJ Trout <[email protected]> wrote: > > One of our aviat lower 6ghz links started taking errors on one side, I > haven't looked yet but I suspect it's interference from unlicensed ptp/ptmp > gear, is this even worth chasing? It seems like I might be better off > moving channels or bands? > > > > -TJ > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com > > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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