Re: Coherers & magnetic detector

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Ed Phillips by way of Terry Fritz <twftesla-at-qwest-dot-net>" <evp-at-pacbell-dot-net>

Tesla list wrote:
> 
> Original poster: "J. B. Weazle McCreath by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <weazle-at-hurontel.on.ca>
> 
> Hello Coilers,
> 
> My old book on "Wireless" describes the wire loop used in the magnetic
> detector as being made of iron.  I'm wondering if the wire sold here
> in hardware stores as picture frame wire might be used, as it seems
> to be soft enough to bend around the pulleys.  It's made from steel
> or iron, as it rusts quickly in a humid environment.
> 
> 73, Weazle, VE3EAR/VE3WZL

	The iron (steel, more likely) "picture wire" around here is pretty big
(about #30, and galvanized) and too stiff to really wind around the
pulleys.  The original descriptions call for much finer wire, silk
insulated, and I doubt if any of that still is available.  I have some
wire recorder wire which I hoped could be made to work, but is
surprisingly "non magnetic" and uninsulated of course.  I suspect fine
and insulated wire is required for operation at RF.  

Ed