Johnson Adventurer Transmitter - Your First Novice Rig. Next↓Top⇑ THIS is the transmitter that earned the very first Novice WAC (Worked All Continents) with just two crystals!
This is the most basic a transmitter can get and still deliver good performance. It features a 6AG7 crystal oscillator/buffer/multiplier and an 807 final RF amplifier and covers 80 through 10 meters. It can be either screen modulated by a Johnson accessory 250-40 kit for less than $13. You could even plate modulate it, if you could build or buy a suitable modulator, once you got your General.
The Adventurer gets high marks (4.8 out of 5) in spite of its reputation of mistuning by inexperienced operators. A novice aged 13 actually made DXCC in 1958 (KN4RID) using low power Johnson equipment. Home of the Collins Radio Association. 75A2 Restoration Here’s what I started with: And here’s the finished receiver all ready to go back into its case (RF cover not installed in pics).
Several people have asked how I did this, so here’s the inside scoop…. First, with any serious restoration, you have to strip it down! You simply can not get into all the crooks and crannies otherwise. Spark Transmitter. John S Belrose Radio Sciences Communications Research Centre Ottawa ON K2H 8S2 Canadajohn.email@example.com First published 22 December 1994The first wireless transmissions (1888-1905) employed spark technology.
Marconi systems were based on spark technology. Fessenden recognised that continuous wave transmission was required for speech, and he felt that he could transmit and receive Morse code better by the continuous wave method than with spark apparatus as Marconi was using. Electronics Workbenches. Antique Radios. Where to buy Vacuum Tubes online. Summer Dollar Days - Vacuum Tube Sale - $1.00 Vacuum Tubes. The tube list at ESRC Vacuum Tubes is very extensive, as is our inventory of Vacuum Tubes, Grid Caps, Sockets, Valves and Capacitors.
Follow the links on the left to find the tubes, valves, sockets, grid caps, and capacitors for your antique radio, ham radio, hi-fi stereo, or other electronic piece. Let us know what you are looking for or just simply order using our order form. Thanks for visiting us!! Tube inventory is subject to availability. We will be adding the downloadable catalog in different formats in the very near future. 2014bid. Tubes We Are Buying. New and Used Tubes We Are Buying Our new and used tube bid lists are now available as an Adobe® Acrobat® (.pdf format) file!
Click Here To Download Prices given are for major brand US or W. European tubes. New tubes must be in their original boxes. If you send tubes, please enclose a packing sheet listing the tubes and giving your name, address, phone, date of this list, whether you want rejects returned, and whether it is OK to downgrade to used if not acceptable as new. We reimburse UPS ground and Fedex ground rates in the continental US and parcel post from Alaska, Hawaii, and foreign countries. Orlando Vacuum Tubes. We Buy Vacuum Tubes Every Day. Our Mission and Policies Welcome!
Dale & Roy Rogalski would like to thank you for stopping by our web site. Our mission is to provide superior product at superior prices using superior policies for our superior customers. Dave's Radio Restoration Project. My Other Restoration Project Old radio restoration.
This is the "before". Starting The Restoration Project I have switched gears! 2002 has been a banner building year for yours truly. But, here is my restoration story. JVC JL-A20 tone arm problem. Reviving this thread to bring closure to this topic.
My JL-A20 also had this problem. Kombinat was entirely correct in his solution, but I thought it needed some further explanation as I was a bit unclear. Hope this helps everyone. 1. Lock up the tone arm. 2. NOS Tubes: Now Old Stock or Nasty Old Stuff? Wireless for the Warrior - Gibson Girl main page. (Louis Meulstee’s web site) Gibson Girl part 1.
Air-Sea Rescue: Long wave and short wave Return Introduction. Nostalgia Air. Vintage Data Sheets for Coils, Transformers, and Other Tube-Era Components by Jeff Duntemann K7JPD. What the &*!
(*!! Is a J. W. TDSL Tube search. Electronic Vacuum Tube Reference Manual & Specifications - KBapps.com. Frank's Electron tube Pages. Jeff Duntemann's Shop Tips. I've had my own shop since I was 13, and my parents gave me the old L-shaped kitchen countertop that would otherwise have gone out on the curb. Finding Parts for Tube Projects. Help! I Can't Find Tube Sockets at Radio Shack! People have been complaining about not being able to find electronics parts for decades. If you go back and read old QSTs and CQs from the 1950s (I have QST all the way back to WWII) you'll find authors moaning and groaning about how Radio Row is only half a mile long now, instead of five miles, as it was when they were kids...
Triangle Art, Dieter Rams and Vinyl Records. Turntable Protractors, Strobe Discs, DIY Articles, Reviews & Guides. Archivehome. PAVEK MUSEUM. How to Find Old Amateur Radio Call Signs. Many times, persons doing research about their ancestors know that a relative was a ham radio operator, and they are interested in learning the call sign held by that person. Depending on the year when the person was licensed, this can sometimes be a very difficult process. However, in some cases, it is possible to find this information online, and this article gives you some pointers. For hams listed during the early days of radio (1913-1923), the process is quite easy, since government call books are available online and are easily searched. And for hams who had a license in place as of 1993 (which could have been issued as early as 1983), the search is also easy. But for the intervening decades, you will have to do some detective work.
Government Call Books: 1913 through 1931 In the early days of radio, the U.S. At some point, the Commerce Department began issuing separate call books for amateur stations. 1920's through 1980's: Privately published call books . AmericanRadioHistory.Com - Documenting the History of Radio TV and FM broadcasting. RadioHeaven. Take a photo tour of "Radio Heaven" When you see this star next to a radio, you can "click" on it to be taken to a page with morer information about that item This page was last updated on: January 18, 2011.
RadiolaGuy.com : Sonny's Tech Tips. Use your browser program's Find feature (edit; find) to search for subjects on this page. Replacing Capacitors in Old Radios and TVs. Why Replace Capacitors? Powering Up Your Radio Safely With a Dim-bulb Tester. The moment you bring home a "new old" radio or TV, the temptation is to plug it in and try it out. That's always a bad idea. For all you know, the set may have a short circuit in the power cord, defective electrolytic capacitors in the power supply, or (very often) failed paper tubular capacitors. Christy Electronic Tester. This compact tester made by Christy Electronics can perform a variety of electrical tests. In particular, it can perform the same "dim bulb" test when starting up an electrical device as the home-made tester described on my Dim Bulb Tester page. Powering Your Antique Battery Radio. Many antique radios run on batteries. These include tube portables , such as the Zenith model K-401 shown below, and "farm" radios, which were used in rural areas where there was no other source of electrical power.
Kd4hsh. Renovated Radios: Links Page.