My 5kw array is in the middle of my antenna farm, more or less... and only needed a couple ferrites on the microinverters to reduce a small amount of noise on 10m. the feed point for a 160m Inv-L is
I scanned a few papers this morning that talk about things like the ferrite window fill factor and variations of inductance with wire size... then pulled out my vna and a ferrite to try a quick exper
In the dummy load case you might be seeing some leakage through the cases or back through the power supply cable. try putting a dummy load on the 20m rx also and maybe add some chokes to the power ca
- Seemingly RF Flooding would not be helped much by stubs or bandpass filters if the desired transmitted signal is interacting with a wall wart. Thus it would seem that adding or removing stubs meant
Not all transceivers are bad for broadband noise. The ts-940 was the first one I knew that was really bad, there have been others since then. my ft-1000mp's that I run on 6 bands for m/m are good, wh
That white haze would not be fixed by conventional water softeners as all they do is exchange the 'hard' calcium or magnesium ions for sodium... so in effect they changed the calcium carbonate or mag
It 'looks' and 'sounds' like a grow lamp ballast... see my experience here: http://wiki.k1ttt.net/2012%20Maintenance%20and%20Upgrade%20Blog.ashx#160mrfi If you can put a wide band sdr on for 24 hours
If they are pure and stable I would not assume a power supply, most of them are wide and drifty. Pure carriers are more likely a computer, tv, or other electronic device source. Most switching suppli
Unfortunately attachments aren't forwarded by the reflector. noises that come and go 24/7 at random times are often related to things like heaters, air conditioners, aquarium heaters, even electric b
'optimizers' are built into the inverters and are just part of the circuitry controlling the power flow from the panels to the lines. and not all optimizing inverters are noisy, I have 27 of them her
My array is maybe 20 from the base of one of my 160m inverted Ls and is directly under (by 150 or so) one 80m inverted v and neither hears anything from the array of course at night the solar array i
My solar array communicates over the power line to the controller in my house on 64khz I think it was... never heard it anywhere else... works fine, kw's of other rf doesn't bother it. yes, it can be
He's 'done many in the past'???? then he should be able to supply a couple references that you can check with! David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt.net AR-Cluster
Mine was pretty close out of the box. All I added after installation were 3 ferrites on each microinverter because of some very light hash on 10m when I pointed a beam right at it. http://www.k1ttt.n
p.s. the Solutions From Science Solar Generator PS-1800 is very noisy both when charging and generating... these are the single panel battery backup portable units. The best use for them is to modify
Mine have optimizers and are nice and quiet... it is not the technology that is the problem, it is the implementation of it by some companies! David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: h
I broke even in about 6 years, but that is only because of huge government subsidies and the mass cap&tax law. Essentially now at 8 years the government has paid for the whole system and all the prod
I use a grundig g5 sw/fm receiver. Has nice directional pattern on the low bands, can follow a null right to a source with it. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://wiki.k1ttt
Loop antennas do not have to have a capacitor to resonate them. you can make a simple loop with just a couple turns of wire... for hf I use about 12" diameter and 2 or 3 turns, whatever I had handy..