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Let's experiment with permission levels

You will notice the new "Sortables" CAPTCHA, where you drag & drop items to prove you are not a spam bot. The questions have been made simpler than before. This new version of "Sortables" is supposed to fix a problem associated with IE9. If you have difficulty posting, please...
by te-admin
Wed Oct 12, 2011 7:02 pm
 
Forum: General Discussions about Tubular Electronics
Topic: Let's experiment with permission levels
Replies: 4
Views: 4998

Admin Message

Well, it looks as though the spammers have finally discovered this forum. I'm sorry to have to do it, but people will now have to sign in to post here. Everyone will be able to read the forums, but you will have to become a member in order to post anything. Relevant posts are always welcome here. Jo...
by te-admin
Tue Jan 04, 2011 4:27 pm
 
Forum: General Discussions about Tubular Electronics
Topic: Admin Message
Replies: 0
Views: 1695

Admin Message

The purpose of this forum is to discuss articles in the Tubular Electronics magazine. Discussions will include suggestions for improvement (and modification) of construction projects, as well as suggestions for the improvement of various other articles. Also included will be discussions, and online ...
by te-admin
Tue Jan 04, 2011 4:27 pm
 
Forum: Introductions
Topic: Admin Message
Replies: 0
Views: 3218

Link to Books & Manuals

by te-admin
Wed Dec 29, 2010 6:05 pm
 
Forum: Vintage Books & Manuals
Topic: Link to Books & Manuals
Replies: 0
Views: 4618

Re: Rufus P. Turner's Capacity Operated Relay project

Actually the 6CU5, 6 volt equivalent to the 50C5/50B5 is on sale for $1.00 each at the Tube Center until 12/31/2010 . http://www.thetubecenter.com/dollardeals.html From the same dealer, a 50B5 is $3.00, and a 50C5 is $5.00. Using a larger filament transformer and the 6 volt version of this tube knoc...
by te-admin
Sat Dec 25, 2010 2:41 pm
 
Forum: Build A Capacitance Operated Relay
Topic: Rufus P. Turner's Capacity Operated Relay project
Replies: 1
Views: 6203

Re: Crystal radio

(Originally Posted: Sat Dec 25, 2010 8:03 pm, moved to this category by moderator :) ) There are a number of free booklets in crystal radio designs. http://www.crystalradio.net/crystalplans/index.shtml I'm found at times on the following forums Radiosmoker at Antique Radio Forum http://antiqueradio...
by te-admin
Sat Dec 25, 2010 2:11 pm
 
Forum: Article Wish List
Topic: Crystal radio
Replies: 1
Views: 4496

Crystal radio

(Originally Posted : Sat Dec 25, 2010 3:54 pm, moved to this category by moderator :) )


Would like tips on building a crystal radio. Thanks.
by te-admin
Sat Dec 25, 2010 2:08 pm
 
Forum: Article Wish List
Topic: Crystal radio
Replies: 1
Views: 4496

Rufus P. Turner's Capacity Operated Relay project

This is the one I built in 1959 and I can attest to its excellent performance. It was on display in 1959 at John Marshall Junior high School (Seattle, WA) in a student science project display in the front foyer. A small catnip mouse was driven out of a hole by a solenoid when you put your hand near ...
by te-admin
Fri Dec 24, 2010 9:42 pm
 
Forum: Build A Capacitance Operated Relay
Topic: Rufus P. Turner's Capacity Operated Relay project
Replies: 1
Views: 6203

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