Hi John, I wasn't including EME antennas in my observations! That's a real nuisance. Maybe a few atoms thickness of metal (Ni comes to mind) vacuum deposited on the acrylic panel covering the display would help - in a former life I could have done it for you!
It's worth a thought if it's that troublesome. Maybe Elecraft could look into it. 73 Stephen G4SJP On 7 July 2011 08:06, John Lemay <j...@carltonhouse.eclipse.co.uk> wrote: > Good morning all > > I raised the issue of noise coming from my P3 several months ago. > > It is noticeable on 2m, using an EME array that is about 50ft from the rig. > There is a combination of azimuth and elevation in which the array "looks" > directly at my shack and under those circumstances the noise level on 2m > rises several dB. > > I was advised to put chokes on the cables at the P3 end, and to revisit the > cleaning of metal panels on the P3 where they meet. I've done this till I'm > blue in the face, but it doesn't help because the P3 radiates a small > amount > of hash from the display screen. It's not practical to screen this ! > > Regards > > John G4ZTR > > > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Stephen Prior > Sent: 06 July 2011 21:29 > To: K7WIA > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] P3 RFI > > Ed, > > Listening on a TH-D72 on about 137MHz, yes the noise from the P3 is indeed > loud. However, by the time I have more than a metre or so separation > between the P3 and the handie, the noise drops below the handie's squelch > threshold, so for me at least, it's a very localised phenomenon. > The interference is also present on 2m, but would certainly be inaudible > with an antenna placed well outside of the shack. > > 73 Stephen G4SJP > > On 6 July 2011 21:20, K7WIA <emoss98...@msn.com> wrote: > > > FWIW > > > > This morning we had a very good opening on 6 meters to the east coast > Maine > > down to Florida from the PNW, > > When the band died, I thought it would be a good time to go out and snoop > > the neighborhood for the line noise source that bugs me, So i got out > my > > MFJ Line Noise Meter, put it on the desk to put in a new battery. I > > turned > > it on and what a racket. so I snooped the shack and found it comes from > the > > P3. > > turn the power off on the P3 and silence, I could get 30 feet away > before > > I > > could not hear it any more. > > I don't hear any of the RFI on any band 160<>6. So I don't know if it is > > there on 2 meters, The MFJ receives on the Aircraft band around 137 MHZ. > so > > I don't know if would effect 2 meters or not. > > > > Ed K7WIA > > > > -- > > View this message in context: > > http://elecraft.365791.n2.nabble.com/P3-RFI-tp6555879p6555879.html > > Sent from the Elecraft mailing list archive at Nabble.com. > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __________ Information from ESET NOD32 Antivirus, version of virus > signature > database 6271 (20110706) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > > __________ Information from ESET NOD32 Antivirus, version of virus > signature > database 6271 (20110706) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
