On Sat, 2008-07-26 at 18:29 -0700, Jim WA9YSD wrote:
> I believe Heath Kit made a bifilar wound open air coil, and it use to match
> 4:1, 50 to 300 or 75 to 450 ohms coil.
But those impedances are 6:1, not 4:1.
> Thats before Ferrous type cores were used for you young folk. It was
> installed in series, at the output of the TUBE transmitter, like a DX 60.
The DX-60 would load up practically anything including the open coax
connector. It wasn't nearly as picky as modern SSB gear.
> I do not remember the power rating of it. I use to have one.
I'm sure I have Heathkit catalogs with it in them.
> Not sure if it had issues on 10 meters or not. Coil was about 8 inches
> long. about 2 or 3 inches in diameter. No capacitors, but its been too long
> ago.
>
> Keep The Faith, Jim K9TF/WA9YSD
>
73, Jerry, K0CQ
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