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Did it start at 2PM Saturday, and die out after 2PM on Sunday?
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70KHz could be a switching power supply.
The first thing I would do is run the rig off a car battery and throw the house's main disconnect. If the noise is still there, it's not coming from your house.
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70KHz could be a switching power supply.
The first thing I would do is run the rig off a car battery and throw the house's main disconnect. If the noise is still there, it's not coming from your house.
I'm interested to see how this plays out and what our experts have to say.I'll give that a try.
Thanks.
Not sure why the popcorn emoji though. (???)
I'm interested to see how this plays out and what our experts have to say.
![]()
70KHz could be a switching power supply.
The first thing I would do is run the rig off a car battery and throw the house's main disconnect. If the noise is still there, it's not coming from your house.
I know some of the guys at the CMARA Field Day were seeing something like it, but it was still going last night around 9pm when I made the video.Did it start at 2PM Saturday, and die out after 2PM on Sunday?
Not sure why the popcorn emoji though. (???)
Ok...I figured it out! I must have a grow house in the neighborhood!
eHam.net:
CO Ham Tracks,Resolves Interference from Pot Cultivators' 'Grow Lights'
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70KHz could be a switching power supply.
The first thing I would do is run the rig off a car battery and throw the house's main disconnect. If the noise is still there, it's not coming from your house.
You have a good idea to try, but the first thing I would do is google around. I bet someone has already been down this road.DING DING DING!!!!
Came home and plugged into my battery bank. Still heard the RFI...so I started turning things off.
Turns out, my PowerWerx power supplies are the culprit!
Stupid question, but I'm not above being stupid here...but if I don't have it set to a common ground and am depending on the ground from the AC outlet, will that be a possible source? In other words, if I hook them up to a common ground with the radio, will that eliminate the noise?
Thanks again!
DING DING DING!!!!
Came home and plugged into my battery bank. Still heard the RFI...so I started turning things off.
Turns out, my PowerWerx power supplies are the culprit!
Stupid question, but I'm not above being stupid here...but if I don't have it set to a common ground and am depending on the ground from the AC outlet, will that be a possible source? In other words, if I hook them up to a common ground with the radio, will that eliminate the noise?
Thanks again!
I did a little googling around and most people have no noise problems with that supply, but some do. I think your idea of configuring for 1 ground (star ground) is your best bet. Strap the supply, radio and tuner if you have one, to the same place with short cables.Stupid question, but I'm not above being stupid here...but if I don't have it set to a common ground and am depending on the ground from the AC outlet, will that be a possible source? In other words, if I hook them up to a common ground with the radio, will that eliminate the noise?
Thanks again!
I did a little googling around and most people have no noise problems with that supply, but some do. I think your idea of configuring for 1 ground (star ground) is your best bet. Strap the supply, radio and tuner if you have one, to the same place with short cables.
All I have is linear supplies. I keep thinking I want to get a nice small, light switcher, especially for portable ops, but then I come across something like this and I think "I just don't feel like dealing with another noise issue.".
I have one of the Astron 30A switchers and never really had a problem with it, FWIW. Not sure of others. My only gripe with the astron supply was the temrinals on the back of the unit sucked, so I "upgraded" them with some lug type terminals that I found at a hamfest plus some hot glue to fill in the dead space around the back of the terminals.
-Mike