Odds & Ends

The old tube shown here is known as a spherical Audion. The Audion was invented by Lee De Forest in 1906. This particular tube is a "double wing" tungsten filament circa 1915. The Audion was the forerunner to what is now generally known as a triode. A small amount of power applied to the grid could control a larger current from the filament to the plate, allowing the Audion to both "detect" radio signals (that is, make them audible) and to provide a modest amount of amplification. This Audion is an original from that era and was personally presented to Ralph Gasparotti W7WDZ (SK) by the inventor himself, Lee De Forest. Ralph’s estate donated it to the LCARA ~ W7DG. We are proud to own such an important and influential piece of early American radio history.

Centered on Pacific Northwest

Below you may find things you're interested in.

Contact: w7dg.lcara@gmail.com and you'll be put in contact with the seller. If shipping outside our immediate area then the appropriate charges will be added.

Realistic 400 Channel Pro-2006 $85

If you'd like to learn more about what the Solar Terrestrial numbers mean, follow the button link below.

Home Brew antenna projects begin here. Start building!

Click the button link below to visit the QST article.

Brian KJ7OX has modeled and built such and antenna. It performs extremely well! Below is the model using MMANA-GAL software. Great low angle takeoff for DX! See a larger model image in the Gallery. By the way... This antenna is 'scalable'. By making it larger you can go down in bands. Just make sure to keep in mind the 2:1 ratio, twice as tall then wide. You can also scale up.

Icom M710 maritime mobile HF station, 150 watts output power. Also the Icom AH-130 auto tuner is part of this deal with all the cables. $400

Begali CW Machine with extras! Keypad, cables and a pair of M32 Morserino-32 keyers. $100