[Lowfer] My variometer resistance

[Mike WE0H]

My 600m loading coil & variometer are wound with silver plated Teflon 
insulated 22g wire.

http://www.we0h.us/505kc/600-meter-station-pics/Loading-Coil-2.jpg
http://www.we0h.us/505kc/600-meter-station-pics/Loading-Coil.jpg

That is some nice wire to solder along with nearly chew proof insulation.

Mike



Peter Barick wrote:
> Gents,
>
> Hmm, I have another take ... some of the previous ones were good information in general, but let's take a look at Andy's application in particular.
>
> !) Paul calculates the variometer has 88 turns. That's too much to deal with if the goal is to optimise an 1750M loading coil. The idea is to use the vari. to fine tune to resonance, not roam the LF landscape. So, a) get the main bucket to resonance slightly higher that the target freq. Then a bit more L is added with the vari. coil.
>
> 2) At all costs keep the amount of wire resistance to a Min. A) use a proper 2D:1L former. If needed, beef up the 5-Gal pale with Dia boosters, like home Ins., that pink stuff cut in strips and glued to the bucket. B) I reco a min of no. 14 enameled or house wire.
>
> 3) Keep the inter connections to a min., and when needed use good connection practices, ie, soldered lugs.
>
> 4) Silver coated, Teflon Ins. wire (turns can be tightly together using it) is available on Ebay. Price is right and won't have to buy in 500Ft rolls!
> --Peter
>