Pages: 1 [2]   Go Down

Author Topic: Interactive RFI?  (Read 340 times)

W9IQ

  • Member
  • Posts: 8866
Re: Interactive RFI?
« Reply #15 on: February 24, 2021, 03:22:09 AM »

Congratulations on finding the source and thanks for sharing the information. Enjoy the quiet bands.

- Glenn W9IQ
Logged
- Glenn W9IQ

God runs electromagnetics on Monday, Wednesday and Friday by the wave theory and the devil runs it on Tuesday, Thursday and Saturday by the Quantum theory.

W1VT

  • Member
  • Posts: 6071
Re: Interactive RFI?
« Reply #16 on: February 24, 2021, 04:24:45 AM »

Congratulations!  I would never have guessed based on the description.
Any idea why it turns off at sunset?

Zak W1VT
« Last Edit: February 24, 2021, 04:29:11 AM by W1VT »
Logged

KH6AQ

  • Member
  • Posts: 9292
Re: Interactive RFI?
« Reply #17 on: February 24, 2021, 08:33:13 AM »

Found the source.  Neighbor had a Promariner Pro Sport 12 trickle charger on his bass boat trolling motor batteries.  Not solar. Not LED. Just a old fashioned fanless (looks like a car stereo amp) potted dual battery charger.

"One other thing-  This only happens during the day.  Right around sunset it suddenly stops."

Was your neighbor shutting off the charger at night?
Logged

AD0AR

  • Member
  • Posts: 218
Re: Interactive RFI?
« Reply #18 on: February 24, 2021, 12:56:56 PM »

Can't explain the time thing.  It was during a real cold spell and it is a intelligent charger so my guess is it wasn't reacting to the light of day, but the temperature of the day.  The colder it got, the lower the voltage the charger would charge to prevent over charging so it would quit at night. 
  I had a spare FT240 43 core so I wrapped the a/c wire 9 times through the core and guess what?  No noise.  But then again it is much warmer now so its charge profile changed too. 
I own a ProMariner 35 amp 3 bank charger for my 10 AGM battery backup and it nary makes a peep of RFI with no external mods.  I guess the difference is in the price.  My charger was $400 and that rinkydink noisemaker was maybe $100. 
Logged
Pages: 1 [2]   Go Up