8 September 19

Johnson Viking Valiant

Below are 2 pictures of  Dean – W8IM’s station

Modes: AM/CW
Bands: 160 – 10 Meters
Input Power: 200W-AM, 275W-CW
VFO: Yes
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



4 September 19

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

1 September 19

From the NIST Website

Station Information

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

31 August 19

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

29 August 19

Rockwell Collins was a multinational corporation company headquartered in Cedar Rapids, Iowa providing avionics and information technology systems and services to government agencies and aircraft manufacturers. The company was acquired by United Technologies Corporation on November 27, 2018, and now operates as part of Collins Aerospace.

More at Wikipedia

27 August 19

Loctal tubes had shorter connecting lengths between the socket pins and the internal elements than did their octal counterparts. This allowed them to operate at higher frequencies than octal tubes. The advent of miniature “all-glass” seven- and nine-pin tubes overtook both octals and loctals, so the loctal’s higher-frequency potential was never fully exploited.

Loctal tube type numbers in the USA typically begin with “7” (for 6.3-volt types) or “14” for 12.6-volt types. This was fudged by specifying the heater voltage as nominally 7 or 14 volts so that the tube nomenclature fitted.

More at Wikipedia