[Thursday] Transmitting music over an arc transmitter?

[Chris Prata]

there is royalty free music available in all genre's IIRC and the power levels can be below the regulated amount.

________________________________
From: Thursday <thursday-bounces at newsm.org> on behalf of David Crowell via Thursday <thursday at newsm.org>
Sent: Tuesday, April 23, 2019 6:52 PM
To: Michael Thompson; Len Arzoomanian
Cc: Thursday Group
Subject: Re: [Thursday] Transmitting music over an arc transmitter?

Hum, broadcasting music without a license??


________________________________
From: Michael Thompson via Thursday <thursday at newsm.org>
To: Len Arzoomanian <arzoo623 at webrightservices.net>
Cc: Thursday Group <thursday at newsm.org>
Sent: Tuesday, April 23, 2019 1:26 PM
Subject: Re: [Thursday] Transmitting music over an arc transmitter?

Easy, just modulate the amplitude of the 15kV AC going into the transmitter. This voltage is supplied from the 120VAC wall plug which should be much easier to modulate.

On Tue, Apr 23, 2019 at 4:23 PM Len Arzoomanian via Thursday <thursday at newsm.org<mailto:thursday at newsm.org>> wrote:
Ok I have been wondering this for a while and some recent research has “sparked” my interest again, no pun intended.

First there was the Fessenden broadcast on Christmas Eve, 1906 on Brant Rock MA.

Then there is this (attached) description of an experiment done from the top of the Fairmont Hotel in CA, picked up by a young ships radio operator born in Rhode Island.

Both were transmitted through a arc transmitter.

Could we do it through the Massie Spark Transmitter?

How was this done? How did they input the sound in to the transmitter?

This may be a good discussion at one of the Wednesday talks this summer!

Len
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Michael Thompson
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