[UK-CONTEST] Ferromagnetics Choke Baluns

Bob Henderson bob.5b4agn at gmail.com
Thu Nov 12 08:35:57 PST 2009


Hi Jim

I hope you don't mind me asking but why would you be thinking of using a
balun to feed unbalanced antennas such as the HF2V or an inverted L?

Bob, 5B4AGN

2009/11/12 MM0BQI <MM0BQI at blueyonder.co.uk>

> Hi
> I have two of the above but can find nothing on the web about them other
> than I believe they were made by a Welsh company.
> They are approx 11 inches by one inch, white plastic tubes with
> 'Ferromagnetics Choke' written on them.
> Both have an SO239 sockets at one end.  At the other end one has a short
> pigtail of RG58 to a PL259 and the other has two screw terminals (possibly
> for a dipole)
> Does anyone have any info on them, frequency range/ power etc?
> Possibly looking to use them on a topband inverted L and HF2V for 40/80.
> Thanks
> Jim
> MM0BQI
>
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