W0SD wrote: »
I am disappointed by not surprised that I have RFI noise on amateur radio. I find a "birdie" about every 24 khz on all the amateur bands. I am using an Outback Flex 80. If I shut the breaker off to the four 205 watt 24 volt panels the "birdies" go away other than on 80 meters
I can still barely hear them and if I shut the Flex 80 off then they go away. When the controller goes to "sleep" I of course do not have them.
I have twisted the wires out of the controller going to the battery and I have tried ferrite all to no avail. I did some "sniffing" with my HT on two
meters and I find the lines with about 50-60 volts coming in from the panel are radiating as well as those going to the battery bank. It would
not be real hard to put the wires going to the battery bank in conduit but I wonder if anyone has had success doing this. I would assume you would have to bypass each end of the conduit to ground? It would be a lot more difficult to put the wire coming in from the panels in conduit. I have the first 25 feet buried.
It is coming in over the antenna's as I can use antenna's farther away and the "birdies" are weaker and I can point my beans away and they
Another question? I note that the Xantrex MPPT controller has an FCC Class B rating. Is there anyone here that has this unit and could tune the ham bands and tell me if they have "birdies" They are very loud and are, not problem to hear from the Flex 80.
niel wrote: »
the inductance that is added is to affect frequencies far beyond what the desired frequency is (0hz) and the power content of those harmonics are much lower, especially in the rf spectrum range of things, so it will not have an adverse effect to the controller imo. we are NOT talking of very large amounts of inductance in the suppressing emi/rfi.
54d18 wrote: »
I then added
a small, maybe 100 pF Ceramic Cap accross the solar leads and that
pretty much did it.
Scuba-Junky wrote: »
Which controller model? What end of the solar leads did you put the cap? Solar end or cc end of cable? Are you a ham radio op and if so, did this clean things up for the HF bands? What voltage is your panel array? What voltage is your battery system? I'm starting to think that all of these factors play into the equation.