> -----Original Message-----
> From: Jon Ogden
> > Have you tried a "micro" Henry choke on the sense line?
> No I have not. I had assumed that the sense line wrapped around the
> torroid
> would end up looking similar to using a choke in series in the line.
> Perhaps I am mistaken. Ten turns of the wire around an FT-50B-77 (half
> inch
> torroid using the 77 material) didn't do much to solve the problem. Maybe
> it's not the same as a choke actually in series with the line.
>
I'm not sure how to calculate the inductance of the FT-50B-77.
Anyone know if it's the same as the FB-(77)-1024 listed in the ARRL RFI
book? And if so, what are the "A-sub-L v Mix No." values listed in table
2.2? Seems to indicate nanoHenries. So then FB-77-1024 is 5600 nanoH or
5.6 microH? For how many turns? One? So many questions! If it is one
then would've been 10 times 5.6 for 56 milliH. That might be too much
inductance and reactance for the sensing line. But this is all a complete
guess without the answers to my questions.
An actual inductance value for the FT-50B-77 would be helpful to
know for sure.
73,
de ed -K0iL
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