[GreenKeys] 88 mh toroids

[Lee Mushel]

Gentlemen,

There was a time when 88mH toroids were obtained from the United States 
principal source: Elliott Buchanan.   Many small packages went between his 
QTH and mine!   And I certainly do remember how to "unpot" those assemblies!

But today I would hope that folks would utilize digital signal processing to 
accomplish the filtering for which  those toroids played such an important 
part!

But if you want to experience some "old activities" I would say that you 
should start with one of the "standard tests of achievement" of the time: 
build a terminal unit inside a polar relay case!   I probably could find 
such a thing around here someplace.

But no shellac.   Nor could I find pumice or rottenstone at the local orange 
big box store the last time I tried.....

73

Lee   K9WRU
----- Original Message ----- 
From: <kf9nz at juno.com>
To: <greenkeys at mailman.qth.net>
Sent: Friday, June 17, 2011 7:13 AM
Subject: [GreenKeys] 88 mh toroids


>        One of my sons-in-law is a cable splicer for AT&T.  Some time
> back he gave me a huge plastic closure full of loading coils.  I have
> only partly tried to get the thing open, and it looks like a lot of work
> to recover the toroids. They are potted.   I have been putting off that
> project for over a year now.   Anyhow, we stopped by his house to see the
> grandkids a few days ago, and he handed me a small cardboard box.  In it
> were eight brand new 88 mh toroids.  Two are mine, but anyone wanting one
> or two, it's first-e-mail-first-shipped until 6 are gone.
>        Anybody want to explain what these are for to those who don't
> know about shellac either?
> Frank
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