Has anyone on the forum succeeded in quieting the RFI from the AC to DC converter in their travel trailer?Or has anyone identified a suitable linear power supply with battery charging circuitry?Our t
Scott, I would look at IOTA Engineering, makers of numerous inverters, chargers, converters, and power supplies. I've been using a DLS-55, a 55A power supply/battery charger, 24/7 for years to power
When N6RNO brought his travel trailer to CQP expeditions, I helped him rig a ferrite choke at the distribution point of AC wiring. Use the guidelines for 2-wire transmitting chokes here. Note that Fa
I would be very suspicious of the growl caused by ferrites on the dc line, the only reason for that would be ripple, aka noise, on the dc output. May be worth putting a scope on that or at least addi
Dave, That "growl" (great description) is harmonics of rectangular waves produced by switched-mode power supplies and power control electronics like the controllers for variable speed motors. Growl i
K1TTT,Good point about the ripple. I have a battery powered scope and will check. ScottSent from my Verizon, Samsung Galaxy smartphone -- Original message --From: k1ttt.dave@gmail.com Date: 7/22/22 1
I was suspicious of it too! The growl started inside the converter when I placed a mix 31 ferrite on the DC line. I immediately removed the ferrite core.The ferrite core on the DC line indeed caus
A misguided effort. What matters is common mode -- that's what radiates to our antennas. 73, Jim K9YC _______________________________________________ RFI mailing list RFI@contesting.com http://lists.
It's all about which cables make the best antennas, and at what frequencies, and with what directivity to our intentional antennas, in any given installation. Another generality is that commercial fi