Re: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
Hi, I have used one of those, and they seem to work great on a single specular source... If you have more than one source of RFI, not so good... If the source is distributed, not so good... Needs to be specular in nature for best results. I have had better luck with an ANC-4, as opposed to the MFJ-1026. I have a set of articles on RFI location and suppression here: https://www.nk7z.net/category/info/rfi-mitigation/ That will give you the list of all RFI related articles on my site. 73, and thanks, Dave (NK7Z) https://www.nk7z.net ARRL Volunteer Examiner ARRL Technical Specialist, RFI ARRL Asst. Director, NW Division, Technical Resources On 1/7/21 3:00 PM, Dean L wrote: I have horrible noise ( assumedly from my neighbors) that i cant seem to kick on my K3 and kx3. The NB and NR dont touch it. Ive been watching youtube videos on this magic little box from MFJ that seems to do wonders on my type of noise. Has anyone a MFJ-1026 they no longer need? Any thoughts on this unit? Thanks for the bandwidth and 73 Dean K2WW __ 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 Message delivered to d...@nk7z.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
I know this is a bit farther off topic, but if the MFJ doesn’t sound like it will work for you, I can recommend the “Loop On The Ground” receive antenna. You can google it, or go to http://www.kk5jy.net/LoG/ <http://www.kk5jy.net/LoG/> for the details. I have one, completely out of sight in the front yard under my gravel and it really works. I have a noisy neighborhood (yes my home is noisy too, but I have mitigated as much of that as I can for now) and this antenna makes radio a lot easier to enjoy. Far less noise and despite low S meter readings, signals pop out clear and easier to copy. Some like to use a preamp with this antenna…I prefer it without but that’s a matter of personal preference. It worked surprisingly well for me, and for a few other hams I know of who have tried it. It’s worth a look... 73, David - N5DCH > On Jan 7, 2021, at 5:15 PM, Tim Tucker wrote: > > I have one and also have a small horizontal receiving loop around the > perimeter of the property with the intended purpose of picking noise > generated by the neighbors' stuff. The MJF unit works if you can > adequately pick up the noise through the receive antenna. I made a video > of it that I put on youtube, but the video actually turned out pretty > poorly because you just can't hear the noise I was demonstrating > eliminating in the video. Oh well. When I originally put this in, I was > using it to eliminate both a rogue plasma tv and also the neighbor's pool > pump. Both of the offending devices have since been replaced so I don't use > the MFJ 1026 as much, but it's definitely a nice tool to have in the box. > > I have kicked around the idea of putting up an active receive antenna for > it but am concerned that I won't be able to place that antenna far enough > away from my regular HF antenna with legal limit usage. I've always > thought that this type of functionality could be built into the K3/K4 since > it already has a separate RX input. Maybe Elecraft would consider it in a > future OS upgrade feature for the K4? > > Tim > > On Thu, Jan 7, 2021 at 3:46 PM Louandzip via Elecraft < > elecraft@mailman.qth.net <mailto:elecraft@mailman.qth.net>> wrote: > >> My suggestion would be to try a small, low, horizontal receiving loop. >> This seems to be the best option to reject nearby noise sources that >> propagate mainly via vertically polarized ground wave. Even normally >> horizontally polarized antennas, e.g. dipoles, still have some projection >> in the vertical plane when viewed off axis. >> A small RX loop is relatively cheap and easy to implement compared to a TX >> loop. >> >>On Thursday, January 7, 2021, 4:14:00 PM MST, Alan - G4GNX < >> g4...@g4gnx.com> wrote: >> >> I have one and I also use an LZ1AQ double mag-loop. The mag-loop works >> pretty well with QRM from neighbours but it has limitations, especially >> when there's more than one source. >> >> The MFJ unit kinda works, but you do need a good 'noise' antenna, which >> I haven't installed yet. I'll be using a mini-whip which comes >> recommended for the job. Again though, the MFJ has its limitations when >> there are multiple noise sources. >> >> From reports I've read, some people find them great and others not so. >> >> Take a look at a couple of YouTube videos, that might help you decide. >> >> 73, >> >> Alan. G4GNX >> >> >> -- Original Message -- >> From: "Dean L" >> To: "Elecraft Mail List" >> Sent: 07/01/2021 23:00:28 >> Subject: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box >> >>> I have horrible noise ( assumedly from my neighbors) that i cant seem to >>> kick on my K3 and kx3. The NB and NR dont touch it. >>> Ive been watching youtube videos on this magic little box from MFJ that >>> seems to do wonders on my type of noise. >>> >>> Has anyone a MFJ-1026 they no longer need? >>> Any thoughts on this unit? >>> >>> Thanks for the bandwidth and 73 >>> >>> Dean K2WW >>> >> >> __ >> 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 >> Message delivered to louand...@yahoo.com >> >> __
Re: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
I have one and also have a small horizontal receiving loop around the perimeter of the property with the intended purpose of picking noise generated by the neighbors' stuff. The MJF unit works if you can adequately pick up the noise through the receive antenna. I made a video of it that I put on youtube, but the video actually turned out pretty poorly because you just can't hear the noise I was demonstrating eliminating in the video. Oh well. When I originally put this in, I was using it to eliminate both a rogue plasma tv and also the neighbor's pool pump. Both of the offending devices have since been replaced so I don't use the MFJ 1026 as much, but it's definitely a nice tool to have in the box. I have kicked around the idea of putting up an active receive antenna for it but am concerned that I won't be able to place that antenna far enough away from my regular HF antenna with legal limit usage. I've always thought that this type of functionality could be built into the K3/K4 since it already has a separate RX input. Maybe Elecraft would consider it in a future OS upgrade feature for the K4? Tim On Thu, Jan 7, 2021 at 3:46 PM Louandzip via Elecraft < elecraft@mailman.qth.net> wrote: > My suggestion would be to try a small, low, horizontal receiving loop. > This seems to be the best option to reject nearby noise sources that > propagate mainly via vertically polarized ground wave. Even normally > horizontally polarized antennas, e.g. dipoles, still have some projection > in the vertical plane when viewed off axis. > A small RX loop is relatively cheap and easy to implement compared to a TX > loop. > > On Thursday, January 7, 2021, 4:14:00 PM MST, Alan - G4GNX < > g4...@g4gnx.com> wrote: > > I have one and I also use an LZ1AQ double mag-loop. The mag-loop works > pretty well with QRM from neighbours but it has limitations, especially > when there's more than one source. > > The MFJ unit kinda works, but you do need a good 'noise' antenna, which > I haven't installed yet. I'll be using a mini-whip which comes > recommended for the job. Again though, the MFJ has its limitations when > there are multiple noise sources. > > From reports I've read, some people find them great and others not so. > > Take a look at a couple of YouTube videos, that might help you decide. > > 73, > > Alan. G4GNX > > > -- Original Message -- > From: "Dean L" > To: "Elecraft Mail List" > Sent: 07/01/2021 23:00:28 > Subject: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box > > >I have horrible noise ( assumedly from my neighbors) that i cant seem to > >kick on my K3 and kx3. The NB and NR dont touch it. > >Ive been watching youtube videos on this magic little box from MFJ that > >seems to do wonders on my type of noise. > > > >Has anyone a MFJ-1026 they no longer need? > >Any thoughts on this unit? > > > >Thanks for the bandwidth and 73 > > > >Dean K2WW > > > > __ > 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 > Message delivered to louand...@yahoo.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 > Message delivered to ae...@worldwidedx.com -- Owner, worldwidedx.com AE6LX, Amateur Radio __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
On 1/7/2021 3:00 PM, Dean L wrote: I have horrible noise ( assumedly from my neighbors) Study this, then get to work on your own home first. The average home has a couple of dozen sources. http://k9yc.com/KillingReceiveNoise.pdf Noise cancelling units are capable of nulling only one noise source at t time, and must be adjusted for every band (sometimes even when QSY). The advice for a well-located sense antenna is right on. 73, Jim K9YC __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
My suggestion would be to try a small, low, horizontal receiving loop. This seems to be the best option to reject nearby noise sources that propagate mainly via vertically polarized ground wave. Even normally horizontally polarized antennas, e.g. dipoles, still have some projection in the vertical plane when viewed off axis. A small RX loop is relatively cheap and easy to implement compared to a TX loop. On Thursday, January 7, 2021, 4:14:00 PM MST, Alan - G4GNX wrote: I have one and I also use an LZ1AQ double mag-loop. The mag-loop works pretty well with QRM from neighbours but it has limitations, especially when there's more than one source. The MFJ unit kinda works, but you do need a good 'noise' antenna, which I haven't installed yet. I'll be using a mini-whip which comes recommended for the job. Again though, the MFJ has its limitations when there are multiple noise sources. From reports I've read, some people find them great and others not so. Take a look at a couple of YouTube videos, that might help you decide. 73, Alan. G4GNX -- Original Message -- From: "Dean L" To: "Elecraft Mail List" Sent: 07/01/2021 23:00:28 Subject: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box >I have horrible noise ( assumedly from my neighbors) that i cant seem to >kick on my K3 and kx3. The NB and NR dont touch it. >Ive been watching youtube videos on this magic little box from MFJ that >seems to do wonders on my type of noise. > >Has anyone a MFJ-1026 they no longer need? >Any thoughts on this unit? > >Thanks for the bandwidth and 73 > >Dean K2WW > __ 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 Message delivered to louand...@yahoo.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
I have one and I also use an LZ1AQ double mag-loop. The mag-loop works pretty well with QRM from neighbours but it has limitations, especially when there's more than one source. The MFJ unit kinda works, but you do need a good 'noise' antenna, which I haven't installed yet. I'll be using a mini-whip which comes recommended for the job. Again though, the MFJ has its limitations when there are multiple noise sources. From reports I've read, some people find them great and others not so. Take a look at a couple of YouTube videos, that might help you decide. 73, Alan. G4GNX -- Original Message -- From: "Dean L" To: "Elecraft Mail List" Sent: 07/01/2021 23:00:28 Subject: [Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box I have horrible noise ( assumedly from my neighbors) that i cant seem to kick on my K3 and kx3. The NB and NR dont touch it. Ive been watching youtube videos on this magic little box from MFJ that seems to do wonders on my type of noise. Has anyone a MFJ-1026 they no longer need? Any thoughts on this unit? Thanks for the bandwidth and 73 Dean K2WW __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] OT: Thoughts on MFJ-1026 or any other phasing box
I have horrible noise ( assumedly from my neighbors) that i cant seem to kick on my K3 and kx3. The NB and NR dont touch it. Ive been watching youtube videos on this magic little box from MFJ that seems to do wonders on my type of noise. Has anyone a MFJ-1026 they no longer need? Any thoughts on this unit? Thanks for the bandwidth and 73 Dean K2WW __ 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 Message delivered to arch...@mail-archive.com
