Uploaded February 2011 | Updated September 2026, 1 day ago

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I made a simple cw/am transmitter for 7 MHz [hamradio]

The design is from Nitin VU3GAO.

Just one tube [EL84] and you are on the air.

As a modulator for AM I used a TDA2005, just one section because it's a stereo amp.

To finish it off a boxed it in a cabinet I had on the shelf.

Hamradio is always fun :-)

Link : http://animals.home.xs4all.nl/files/7MHz_Tube_El84.png [my design for 7 MHz]

Link : nmwilliam.tripod.com/el84.html [original design - website VU3GAO]

Link : http://animals.home.xs4all.nl/files/TDA2005_AM_Modulator.jpg [Modulator]