The Society, founded in 1991, publishes a newsletter and several books about crystal radio. Content: crystal set projects, tips for crystal radio design, and crystal radio / antique radio history.

Transistor Cross Reference Database This database currently has over 40, 000 transistors in it which can be cross-referenced to other parts. Enter a search term below to begin your transistor search. Good luck! Search Term: Note:Portions of this database came from Pacific Semiconductor. The original file of theirs can be obtained at: http://www.pacificsemi.com/html/pcsm1061.htm Disclaimer:The ...

A personal website dedicated to my interests, including: my family; photography; ham radio; test equipment; tropical and marine fish; and ferns and orchids ...

Vintage Amateur Radio Stations of the 1920's Era ...

An Easy to Build and Operate Induction Generator Believe it or not, nearly everyone you know has at least one induction generator and probably more. That's right! You say that is impossible... well, read on! Within every home in America there are motors that can be operated as generators. They may not be labeled as generators, but they will function just the same. These motors are often called ...

This is a library of model numbers, specifications and connection information for modulation transformers. Any contribtions are welcome. Kenyon Miscellaneous RCA Stancor Thordarson UTC Back 12 January 2002 ...

N6HB Amateur Radio, the early years. Includes pictures of the first station, and details influences along the way.

Welcome to the Glowbugs Web Pages. Begun: January 30, 1999 We, the members of the Glowbugs e-mail list, are offering these pages as a printable archive of electronic circuits which use vacuum-tubes to the Radio Amateur and others who enjoy using tubes. We hope that the circuits, stories, and links found here will encourage you to BUILD and USE vacuum-tube circuits. We have organized these ...

Build a PIC controlled DDS VFO, 0 to 6 MHz Click a picture to zoom Files contained in MINIDDS.ZIP: readme.txt Read this first! compplac.pdf Component placement in PDF format schema.pdf Schematic diagram in PDF format top.ps PCB top copper layer in Postscript format bottom.ps PCB bottom copper layer in Postscript format ad9832_4.asm PIC assembly source code p16f84.inc Needed for assembly of ...

Electronics, tube manual, Tube Amps, Schematics, modifications, software..

AB0CW's Amateur and Antique Radio Page Welcome to the homepage of AB0CW, Mark B. Dittmar, in Westminster, Colorado. I have been an amateur radio operator for 24 years. I first got my novice license back in 1977 in Ohio with the call WD8PCE. My main interests in amateur radio revolve around operating, maintaining, and restoring vintage gear, aka boatanchors , as well as building homebrew qrp ...

For radio enthusiasts interested in building and using the popular HBR tube receivers published in QST articles in the late 50s and 60s ALSO for folks wanting to repair those Heathkit SB-104(A), SB100, SB-101, SB-102, HW-101 Transceivers.

N6EV's Glowbugs Page Cruising the ether with stone knives and bear skins. Last Updated 1/17/99 Glowbug References from ARRL Handbooks Regenerative Receivers section from 1957 ARRL Handbook (with diagrams!) Crystal Oscillators section from 1968 ARRL Handbook (with diagrams!) Glowbug Schematics and Projects Receiver/Transmitter Schematics and Parts Lists from 1957 ARRL Handbook Transmitter ...

WD8DAS Steve Johnston Boise, Idaho USA Grid-Square DN-13 Click here to send me an email. Steve in the shack. Visit Steve's Radio Gallery Get info on Sync Detectors This way to the Funway *AFRAID * Corps of Discovery NERTs in their habitat. The Famous Spitfire Receiver A Wise Man Once Said... Peace on Earth/Purity of Essence Steve's Magazine Articles Links to organizations which count me as an ...

Here are some photos of the new SE 2A3 amp I built for Jim Scheffel. The design is adapted from the Simple 45 on Duncan Amps site. Output tubes are Sovtek 2A3s, rectifier is a NOS Mullard 5Z3 and drivers are NOS Tung-Sol 6SL7GT tall bottles. Transformers and chokes are all Hammond. Power supply capacitors are 370 VAC motor run caps and one vintage 2uF oil capacitor. The chassis (also Hammond) ...

Updated 20 Jan 2001, AB4YD Bill's glowbug project #2, 80M VFO rig with 807 final, Rev E This project was inspired by a series of QST articles by Hayward, W1PH. I based my rig on his April 1962 article, Have You Tried 160 Lately . I liked his simple, single band rig. I thought his use of 6V6 tubes, along with regulated voltages, to be a simple but stable alternative to being rock bound . You can ...

WELCOME TO GLOWBUGS! W5SUM UPDATED OCTOBER 2000 W5SUM hisself.... ugly aint he AMPLITUDE MODULATION IS ALIVE AND WELL ! Howdy y'all, I m Ronnie W5SUM. I was first licensed as WN5AIA in the fall of 1969 at the age of 14. My first station was a Eico 720 and a Drake 2-B. Boy I was top flight! I upgraded to General and received the call WB5AIA in the fall of 1970. I upgraded to Extra in 1984 and ...

Selected pages from the book ...

CVM Varimatch Series Terminal Arrangement Primary Secondary P to P Imp P-B-B-P Join 9&10 Con. to 7&12 Join 9&10 Con. to 8&12 Join 9&10 Con. to 8&11 Join 8&9 Con. to 7&12 Join 7&9 10&12 Con. to 7&10 Join 8&9 10&11 Con. to 8&10 Join 3&4 Con. to 1&6 Join 3&4 Con. to 2&6 Join 2&3 Con. to 1&6 Join 3&4 Con. to 2&5 Join 1&3 4&6 Con. to 1&4 Join 7&11 8&12 Con. to 7&8 Join 1&3 2&6 Con. to 1&2 Line to RF ...

Five Watt Series Modulated Rig No modualtion transformer is required. This rig is capable of clean audio from 10 Hz to 15 kHz. The VXO can pull the crystal up or down a few kHz with good stability. Only 3 or 4 crystals could cover the entire AM Window on 75 Meters. For complete crystal stability short out the VXO cap and inductor to ground. The crystal will now determine the frequency and not ...

Ak0b Hi and welcome to my glowbug and qrp building page. The name is Stan Wilson. I live in St. Charles, MO near St. Louis. St. Charles is known for being the first capital of the state of Missouri and the Lewis & Clark expedition up the Missouri River started from here. Also Danial Boone lived in the area for many years. I have been a licensed amateur radio operator since 1954, and hold an ...

Cigar Box 6 Watt Output Transmitter In front of my SX101a and HT32 is the little QRP rig and Cigar box power supply, better known as the CB-1 and the CB-PS. The story behind this transmitter may be a little different that you have heard before, but this is how the idea for the CB-1 began. About two years ago I was back in Potter County, Penn. where I grew up walking around the ten acres I now ...

UNIVERSAL INVERTER POWER SUPPLY, PART I; by Dennis Starks GENERAL: This power supply is capable of operating almost any vintage tube type radio, either receiver, or low powered transceiver that had originally been intended for battery powered operation. Only minimal modification will needed to this basic circuit to serve your needs. Input voltage requirements vary depending on the radio in ...

The Secret Dream Transmitter A simple and nostalgic project. by Steve Johnston, WD8DAS View the full-size photo View the full-size schematic When I was a teenager in the 1970s, constructing electronic projects could be frustrating. The once-common full line radio parts shops had closed and with them went the easiest sources of parts for the radio devices I wanted to build. It didn't help that ...