[Boatanchors] Coils and the winding thereof

[Carl]

Any heat signifies loss which may affect performance by reducing the Q.

Look for a material that stays at room temperature.

However the microwave doesnt test for long term moisture absorbtion in a one 
shot try.

Carl
KM1H

----- Original Message ----- 
From: <match at ece.utah.edu>
To: <boatanchors at mailman.qth.net>
Sent: Thursday, July 02, 2009 11:35 AM
Subject: Re: [Boatanchors] Coils and the winding thereof


> Regarding homemade coil forms... There's an easy way to identify if it's 
> lossy
> or not. Make up the form and before you wind it, put it in your wifes
> microwave oven for a few seconds. If it's really lossy, it'll get warm. If 
> it's not
> very lossy it won't. Of course, make sure it's dry.
>
> Marvin
> KA7TPH
>
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