I had picked up several old antenna tuners at an estate sale. Not a one of them would tune to below a 6:1 VSWR. Turns out the roller inductors were all tarnished and dirty. I used a product called Never Dull, it’s a tarnish remover impregnated in a cotton wadding. Spun the inductor while wiping it with the Never Dull, and the tarnish and dirt came right off. Needless to say, the tuners tune right down to a 1:1 match now on any random antenna. You can get the stuff at most hardware and auto parts stores.
@jerryf3375
3 жыл бұрын
You probably shouldn't have done that without purchasing some lube for the inductor... 2 things can happen.. #1 the silver can mow wear off the inductor coil wires. #2 you can wear out the center of the contact wheel at the shaft... yes it'll work for The short term but over time you might have problems... the line is a special lube too.. the wrong line can cause arcing because it doesn't have good conductivity and others won't even have enough conductivity to allow you to tune... I o ce knew the name of this stuff but have long forgotten it...
@robertmitchum2972
2 жыл бұрын
@@jerryf3375 Good idea! I will have to look for this grease/lube online. Perhaps some kind of dilectric grease would suffice. I’m not using any of the tuners anyway. Just cleaned them up to get them working. I will definitely look into this stuff to protect the silver plating.
@jerryf3375
2 жыл бұрын
@@robertmitchum2972 just keep in mind that it's not for the coil but the roller.. but automotive stuff is a no no.. If a person could replate the silver that would be the better option for sure .. I am going try silver plating in the near future ..for other reasons than inductor coils.. I have copper plated stuff before so I know this cant be much different..
@iplayguitar4u
Жыл бұрын
Using 91% alcohol on a shop towel, carefully clean the roller inductor until no more crud is on the shop towel, making sure no grease from the rod or other dirt gets on the roller inductor. Then mix a small amount of 3 parts graphite powder to 1 part lithium grease to use as lubricant for the roller on the support rod. Clean the old grease off the rod, making sure it doesn't get on the coil. Apply the new clean graphite/lithium grease to the roller support rod. Confirm low resistance from one end to the other. Done.
@AngelVillaG
3 жыл бұрын
the black on the wheel axle is a conductive lubricant, it is not grime and should be maintained
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