howto:growequipmentrfi
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howto:growequipmentrfi [2020/08/05 13:23] – ↷ Links adapted because of a move operation va7fi | howto:growequipmentrfi [2021/06/05 12:29] (current) – va7fi | ||
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- | ====== | + | ~~NOTOC~~ |
+ | ====== | ||
+ | |||
+ | ===== The Hunt ===== | ||
Over the past few days/weeks, I've been noticing a (local?) noise on HF (80m and 40m) that starts at 7pm and lasts all night until 1pm the next day. | Over the past few days/weeks, I've been noticing a (local?) noise on HF (80m and 40m) that starts at 7pm and lasts all night until 1pm the next day. | ||
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{{ howto: | {{ howto: | ||
- | To find the source, I used an [[https:// | + | To find the source, I used an [[https:// |
- | * We went up and down Roberts Creek rd (North - South) | + | * We went up and down Roberts Creek rd (North - South), noted where the noise was the strongest, and drew an imaginary horizontal line on the map. |
- | * We went up and down Lockyer rd / Hansen rd (East - West) and did the same thing. | + | * We went up and down Lockyer rd / Hansen rd (East - West), found where the noise was strongest, |
- | * Looking at the map, we got a pretty good idea where the noise was coming from so we drove down their driveway and it looks like we found the house. | + | * Looking at where the two lines crossed gave us a pretty good idea where the noise was coming from. We drove down their driveway and it looks like we found the house... |
Here's what the noise looks like at my house on the SDR with the mobile antenna: | Here's what the noise looks like at my house on the SDR with the mobile antenna: | ||
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And here's what it looks like in front of their house: | And here's what it looks like in front of their house: | ||
{{ howto: | {{ howto: | ||
+ | |||
+ | |||
+ | ===== The Resolution ===== | ||
Once we located the house, we drove back home and I walked back to introduce myself and explain the situation. | Once we located the house, we drove back home and I walked back to introduce myself and explain the situation. | ||
The next day, they contacted me to tell me that they think they found the issue: | The next day, they contacted me to tell me that they think they found the issue: | ||
- | <WRAP indent> | + | <QUOTE>It appears to be us causing the interference, |
- | "< | + | </QUOTE> |
- | </WRAP> | + | |
We coordinated a quick turn-off-and-back-on test and confirmed that it was indeed their growing equipment: | We coordinated a quick turn-off-and-back-on test and confirmed that it was indeed their growing equipment: | ||
{{ howto: | {{ howto: | ||
- | I offered to do a bit of research to see if the RFI could be filtered for their equipment. | + | I offered to do a bit of research to see if the RFI could be filtered for their equipment. |
- | This [[http:// | + | This [[http:// |
After explaining how important it is to stop using their equipment until the RFI issue is resolved (and pointing them to the [[https:// | After explaining how important it is to stop using their equipment until the RFI issue is resolved (and pointing them to the [[https:// | ||
- | After a few days, they told me that they didn't buy the filters because of the minimum order quantity of six. However, they did get an " | + | After a few days, they told me that they didn't buy the filters because of the minimum order quantity of six. However, they did get an " |
+ | |||
+ | I've been very impressed at how receptive they were to fixing a problem they can't really notice themselves. | ||
+ | |||
+ | ===== ISED Canada ===== | ||
+ | |||
+ | Before my neighbour got back to me the next day, I sent an email to the [[https:// | ||
+ | |||
+ | < | ||
+ | To: [[ic.spectrumsurrey-surreyspectre.ic@canada.ca]] | ||
+ | |||
+ | Hello, | ||
+ | |||
+ | I live on the Sunshine Coast and a few days / weeks ago, I noticed a very strong noise on 80m and 40m between 7pm and 1pm (18 hours a day). We drove around with an SDR and a computer and pin pointed the noise to one or two houses. | ||
+ | |||
+ | I talked to one of them to ask them if they had recently bough a new piece of equipment on a timer but they couldn' | ||
+ | |||
+ | I'll continue trying to work with them to isolate and hopefully fix the equipment that' | ||
+ | |||
+ | Thanks, | ||
+ | |||
+ | Patrick Truchon, VA7FI >> | ||
+ | </ | ||
+ | |||
+ | I got a response six days later: | ||
+ | |||
+ | < | ||
+ | Hello Patrick, | ||
+ | |||
+ | I have received your email concern regarding interference on 80m and 40m. | ||
+ | |||
+ | We really appreciate you trying to deal with this situation yourself first. In the past, sometimes this interference was pin pointed by the breaker test. This test can isolate more clearly where the interference is coming from. | ||
+ | |||
+ | I am hoping you can figure this issue out with the home owners because due to COVID-19 restrictions, | ||
+ | |||
+ | Please feel free to contact me if you have any other questions. | ||
+ | |||
+ | <Name Redacted> | ||
+ | </ | ||
+ | |||
+ | I informed him that my neighbour and I resolved the issue and he responded: "That is great to hear. Very interesting resolution!" | ||
- | I've been very impressed at how receptive they were to fixing a problem they can't really notice themselves. |
howto/growequipmentrfi.1596659034.txt.gz · Last modified: 2020/08/05 13:23 by va7fi