Samuel Finley Breese Morse (April 27, 1791 – April 2, 1872) was an American painter and inventor. After having established his reputation as a portrait painter, in his middle age Morse contributed to the invention of a single-wire telegraph system based on European telegraphs… More at Wikipedia
In 1832, following a three-year European tour, Samuel F.B. Morse sailed home to America. Tucked away in the hold was Gallery of the Louvre (1831–1833), a massive six-by-nine-foot canvas that would take him 14 months to complete. Morse intended for the painting, which depicted some three dozen of the Louvre’s greatest works displayed together in an imagined museum gallery, to serve as a sweeping art history lesson for the American people. This painting, he was certain, would finally propel him to fame… The rest of the story at Artsy.net
The Webster Bandspanner mobile antenna manual is below, they also made marine antennas….
From Eham Forum… Post by: WF0H on February 23, 2003… I am not sure when this started, but it was well established in the early 1950’s, which were probably the heyday of the 807 tube. I once had a Johnson-Viking mobile rig from the late 1940’s that had an 807 final in it – a wonderful CW and AM rig, too. In the 1930s, the popular tube was the Model 45. By the late 1950’s, the tube of choice was the 6146, so it probably stared someplace in between those two eras.
The first electronic computer named the ENIAC — Electronic Numerical Integrator and Computer and unvailed in 1946, for more information and pictures … Click Here
Internet Radio Linking Project… The IRLP uses Voice-Over-IP (VoIP) custom software and hardware. Coupled with the power of the Internet, IRLP will link your repeater site or simplex station to the world in a simple and cost effective way… http://www.irlp.net/
If you want to know your declination NOAA has a calculator, it also has one for magnetic field, another one for historical and a composite grid… Click Here
NOAA also has an app and other handy bits of information… Click Here
Magnetic Declination on Wikipedia
Johnson Viking Valiant
Below are 2 pictures of Dean – W8IM’s station
Bands: 160 – 10 Meters
Input Power: 200W-AM, 275W-CW
Power Supply: Internal
Final Tube(s): 3ea. 6146 parallel
Modulator: 2ea. 6146 push-pull
New Price/Year: $349.50 kit/$439.50 wired/1956-62
Size: 11.5″h x 21.0″w x 16.25″d
Approx. Weight: 73 lbs
The 955 Acorn
The type 955 triode “acorn tube” is a small triode thermionic valve (vacuum tube in USA) designed primarily to operate at high frequency. Although data books specify an upper limit of 400–600 MHz, some circuits may obtain gain up to about 900 MHz…… More at Wikipedia
5 September 19 – Trivia Question
The Acorn Valve
An acorn tube, or acorn valve, refers to any member of a family of VHF/UHF vacuum tubes starting just before World War II. They were named after their resemblance to the acorn, specifically due to the glass cap at one end of the tube that looked similar to the cap on an acorn. The acorn tubes found widespread use in radios and radar systems….. More at Wikipedia
From the NIST Website
NIST radio station WWVB is located on the same site as NIST HF radio station WWV near Fort Collins, Colorado. The WWVB broadcasts are used by millions of people throughout North America to synchronize consumer electronic products like wall clocks, clock radios and wristwatches. In addition, WWVB may be used in other consumer timekeeping applications, such as appliances, cameras, and irrigation controllers, as well as in high level applications such as accurate time synchronization.
For more See the NIST website
The Cray-1 was a supercomputer designed, manufactured and marketed by Cray Research. Announced in 1975, the first Cray-1 system was installed at Los Alamos National Laboratory in 1976. Eventually, over 100 Cray-1’s were sold, making it one of the most successful supercomputers in history. It is perhaps best known for its unique shape, a relatively small C-shaped cabinet with a ring of benches around the outside covering the power supplies.
More at Wikipedia