I had tried the HT sniffer method, but it seemed to come from the TV as a unit, and was not any better/worse at a given lead.
I've got to get the SpecAn involved and find out what exactly this thing is radiating, and try to relate it to some fundemental operation of a TV, and go from there! Tnx Mike - N3EAQ --- In Repeater-Builder@yahoogroups.com, Ron Wright <[EMAIL PROTECTED]> wrote: > > Mike, > > Maybe you've tried this, but taking an HT on your input freq and sniffing around the TV might give idea of where it is coming from. Might be on power cord or antenna. > > If on power lead could put simple inline wrap cord around choke. Would act as low pass filter. > > On antenna lead might need a simple notch using a piece of 1/4 wavelength RG59 tuned to your input freq with T connector. Simple to make and sure it would blend in nicely. > > 73, ron, n9ee/r > > > > >From: raritansailor <[EMAIL PROTECTED]> > >Date: 2008/03/12 Wed AM 05:59:01 CDT > >To: Repeater-Builder@yahoogroups.com > >Subject: [Repeater-Builder] Re: Repeater input getting interference FROM a TV? > > > > >Unfortunately the TV belongs to the folks who are allowing us to use > >the site for free. I really dont want to bend their noses :-) > > > >I've discussed replacing the TV, but they're not keen on that answer. > > > >Yes, I am a bit gun shy WRT ripping into their set, I hope some > >chokes on the leads buy me something! > > > >Thanks! > > > >Mike > > > >--- In Repeater-Builder@yahoogroups.com, George Henry <ka3hsw@> > >wrote: > >> > >> Be VERY careful about doing the work on someone else's property... > >there are liability issues! (If their TV catches on fire down the > >road, guess who they'll come after....) > >> > >> Best bet is to offer suggestions such as Jeff posted, even offer to > >pay for the filters, but the bottom line is that it is 100% the > >responsibility of the owner of the interfering device to eliminate > >the interference or discontinue the use of the device, when > >interference occurs to a licensed service. Send 'em to the ARRL > >website: lots of good information for consumers there, and the FCC > >even directs people there! > >> > >> You might even want to print out the FCC warning letter that went > >out to the owner of a TV set that was interfering with the EPIRB > >satellite system recently. That oughta scare 'em into doing the > >right thing! > >> > >> George, KA3HSW / WQGJ413 > >> > >> -----Original Message----- > >> >From: Jeff DePolo <jd0@> > >> >Sent: Mar 11, 2008 9:34 AM > >> >To: Repeater-Builder@yahoogroups.com > >> >Subject: RE: [Repeater-Builder] Repeater input getting > >interference FROM a TV? > >> > > >> >> Any Ideas how to stop the noise at the TV? > >> >> > >> >> Regards, N3EAQ > >> > > >> >The most direct solution is obvious: replace the TV. > >> > > >> >If that's not an option, try choking the coax/video and power > >cords going > >> >into the TV with ferrites. Pick a mix that provides optimum > >attenuation at > >> >VHF. You might also try disconnecting the coax or video/audio > >cables from > >> >the TV and see if that changes the severity of the interference; > >might give > >> >you a clue. > >> > > >> >If that doesn't seem to improve it, it's probably radiating > >through the TV's > >> >plastic chassis. You can experiment with lining the inside of the > >cabinet > >> >with EMI/RFI shielding foil or spray-on shielding products, but if > >you have > >> >to go that far, and with the final results potentially still not > >being > >> >acceptable, the direct solution first proposed above is probably > >the best > >> >way to go... > >> > > >> > --- Jeff WN3A > >> > > > > > > > Ron Wright, N9EE > 727-376-6575 > MICRO COMPUTER CONCEPTS > Owner 146.64 repeater Tampa Bay, FL > No tone, all are welcome. >
