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Discussion in 'Amateur Radio Antennas' started by towerdog, Jan 17, 2011.
Mineral oil will work in a pinch but it offers less heat dissipation then transformer oil. I believe you can purchase a gallon of "dummy load oil" on eBay for a reasonable price. Do not use any standard oil. Even if it shows low conductivity at DC with your ohm meter, it can respond much differently with RF. They typically have other additives in them that can cause problems.
How could a guy tell if he was sold transformer oil instead of peanut oil? Just curious.
You could try frying some peanuts in it and see how they taste.
What about the pure silicone brake fluid available now? Think that would work? Like DOT-5
GALLON OF OIL FOR HEATHKIT CANTENNA, DUMMY LOAD, MFJ - eBay (item 330518513931 end time Jan-18-11 19:40:27 PST)
Good question,one that I cannot answer. Silicone load oil is designed to efficiently transfer heat and has a very high boiling point and will not absorb water all properties that the brake fluid has however load oil is designed to be basically transparent to RF. I have no idea what the brake fluid would be like but I think I would try it at low power and carefully watch some meters and monitor heat transfer if I were to try it.
when they ask me if i want fries with my burger i generally say it would be nice if i got some fries with my fries nevermind my f@cking burger.
I've heard of success with non-detergent motor oil as well.
Well could smell like bacon frying while tuning up the rig. mmmmm just add an omlet with it.
I have one of the cantenna loads but never got the oil haven't needed it should go over to alabama power and ask for a gallon of their xformer oil. These folks are pretty good to help you out if you ask and explain what it's for.
Ham Radio Outlet | MFJ MFJ-21 | 1 GALLON TRANSFORMER OIL (NON-PCB)