[Boatanchors] Antenna Question

[jeremy-ca]

A Red core signifies a powdered iron # 2 mix, you possibly bought that to 
wind a balun for an antenna tuner. I wouldnt advise using ferrite at much 
over 25-50W as they saturate easy and can cause all sorts of non linear 
radiation.
You can get all the formulas and winding info from the Amidon web site.

Carl
KM1H



----- Original Message ----- 
From: "DW Holtman" <tubestuff at comcast.net>
To: "List Boatanchors" <boatanchors at mailman.qth.net>
Sent: Saturday, October 20, 2007 2:24 PM
Subject: [Boatanchors] Antenna Question


>
> Hello,
>
> I was wondering if anyone has built the antenna from the November 1995 
> edition of QST, written by Floyd Koontz, WA2WVL? Can't find his E-Mail 
> address.
>
> It requires winding a 50 to 450 ohm transformer using an FT-240-61 core. I 
> have a couple of cores the same size, but do not know if they are the same 
> type. Does anyone know the color of the FT-240-61 or how I could identify 
> the core? The cores I have I bought years ago for some other antenna 
> project and do not rember the type. They are red on the inside, outside 
> and top with the bottom a dark grey.
>
> This project can be down loaded from the ARRL TIS web page at
>
> http://www.arrl.org/tis/info/Wire-H.html
>
> Click on Brodaband transmitting wire antennas for 160 thru 10 meters.
>
> Thank you in advance for any help.
>
> Best,
> DW Holtman
> WB7SSN
>
>
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