[AMRadio] Spark gap transmitter

jeremy-ca km1h at jeremy.mv.com
Mon Nov 26 18:04:44 EST 2007

----- Original Message ----- 
From: <ne1s at neandertech.com>
To: "Discussion of AM Radio in the Amateur Service" 
<amradio at mailman.qth.net>
Sent: Monday, November 26, 2007 4:31 PM
Subject: Re: [AMRadio] Spark gap transmitter

>>> This is a bit of the subject..Iam in need of a schematic and detailed
>>> construction notes for a spark gap transmitter..It will be used in an
>>> upcoming exhibit..Thanks in advance..........
>> A Model T spark coil, a key and an antenna.
>> Carl
>> KM1H
> There is usually at least one tank circuit (not counting the antenna
> itself) involved, as well.
> (Does the term "jigger" ring a bell?)
> I'm sure I've got period schematics SOMEWHERE, just don't remember quite
> where.
> 73,
> -Larry/NE1S

That came along later when they had a clue what was going on. The original 
experimenters covered DC to daylight.

Oh, dont forget the coupling cap which was home made back then. I dont know 
the output voltage of a T coil.



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