This page illustrates several of the vacuum tube
projects that I've been recently working on.
You can probably guess that I'm a big fan of Alfred Morgan's series of books such as:
"The Boy's Second Book of Radio and Electronics" which I had received as a Christmas
present many years ago.
I felt compelled to build some of these old projects (again).
Although the Morgan projects would work just fine without it, I've added an isolation transformer,
fuse, and 3-line grounded AC cord for safety's sake.
Hopefully, I'll add more skizzies to this page soon.
A recent addition is the 1934 Doerle Twinplex as
illustrated in T. J. Linsay's book.
I've just completed this set (Nov 16, 2005) and it *really* works well. I can't wait
to wind some additional coils for it! (I've recently disassembled it to paint it.)
My newest additions are the Lindsay Grid
Dip Oscillator and the ubiquitous Allied Knight Kit Space Spanner.
I was able to reproduce one coil to date by using my GDO and Gingery coil wider. What a blast!
I've just added my first heterodyne
receiver for 80 meter band. What a difference! The tuning very sharp
to the regenerative radios. Although it is another "primitive" design, it really works well!
I may try winding some AM/BC coils to see how it compares to my first radios.
New addition August 27, 2006, the "Doerle
Signal Gripper". This is a nifty 3-tube regenerative receiver that
a tuned RF-Amp, grid-leak detector, inter-stage transformer, and audio amp.
I've yet to engrave the front panel, but that's next!
And after all that, I'm going to have to
re-layout my WEB page to show more details!
(Another link w/more of my projects)
|Doerle 3-Tube "Signal Gripper" Front (Laser engraved)||Doerle 3-Tube "Signal Gripper" with 'Radio' graphic|
|Doerle 3-Tube "Signal Gripper" Front||Doerle 3-Tube "Signal Gripper" Rear|
|Doerle 3-Tube "Signal Gripper" Top||Doerle 3-Tube "Signal Gripper" Grid Leak|
|Doerle 3-Tube "Signal Gripper" Home-made capacitor - Top View||Doerle 3-Tube "Signal Gripper" Home-made capacitor - Bottom View|
|Doerle 3-Tube "Signal Gripper" Home-Made RF Choke||Doerle 3-Tube "Signal Gripper" Home-Made Choke in progress|
|80 Meter Heterodyne receiver (click photo areas for details)||"Rocky" Regenerative Receiver|
|1934 Doerle TwinPlex Receiver with Krinkle Finish (Schematic - GIF - PDF)|
|Gingery Universal Coil Winder (click for 3.5 meg video)|
1950's Space Spanner Knight kit Receiver - Homebrew version - (layout)
|1950's Space Spanner Knight kit Receiver - Homebrew version - (layout)|
|Home-Wound Grid Dip Meter Broadcast Coil|
Home-made Lindsay Grid Dip Oscillator
|Home-made Lindsay Grid Dip Oscillator Scale|
1934 Doerle TwinPlex Receiver (sans paint Front)
1934 Doerle TwinPlex Receiver (sans paint Rear)
|Alfred P. Morgan 3-Tube Audio Amplifier (Schematic - GIF - PDF)|
Alfred P. Morgan 2-Stage Audio Preamplifier (Schematic - GIF)
|Alfred P. Morgan 1-6C5 Tube Regenerative Receiver (Schematic - GIF - PDF)|
|"Mystery" Crystal Radio (front)|
|"Mystery" Crystal Radio (side)||"Dave Schmarder #44" Crystal Radio Detector Portion (side)|
|"Dave Schmarder #44" Crystal Radio Tuner Portion (front)||AM Radio Transmitter (front)|
AM Radio Transmitter (rear)
|AM Radio Transmitter (layout)|