Frances Bean Cobain, the daughter of Kurt Cobain and Courtney Love, opened up about her sobriety in a lengthy note posted on Instagram yesterday, Spin reports. “It’s my 2nd sober birthday,” she wrote in the caption of a short video of her smiling in Hawaii. “It’s an interesting and kaleidoscopic decision to share … More »
Tube radios have a certain charm. Waiting for them to warm up, that glow of the filaments in a dark room. Tubes ruled radio for many decades. [Uniservo] posted a video about the history and technology behind the 1920’s era Clapp-Eastham C-3 radio. This is a three-tube regenerative receiver and was advanced for its day.
If you are worried he won’t open it up, don’t despair. Around the ten minute mark, your patience will be rewarded. Inside are three big tubes full of getter and bus bars instead of wires. Add to that the furniture-quality case, and this is a grand old radio.
One interesting thing about this receiver is that it uses a special kind of transformer known as a variocoupler where a coil rotates inside another to adjust the regeneration. It turned out that the tubes were newer than the radio, so [Uniservo] replaced them with more age-appropriate tubes.
Unfortunately, the radio is silent for now because of open audio transformers. We hope he’ll get it working and make another video of it actually operating.
Regenerative receivers have pretty good amplification performance with a low parts count. That’s because the amplifier operates near oscillation where the gain at the selected frequency is very high. It is pretty easy to build your own using technology a little newer than these tubes. If you want to dive into the theory, we’ve done that, too.
(NEW ORLEANS) — Tens of thousands of revelers descended on New Orleans streets for parades and rowdy fun as Mardi Gras capped the Carnival season in a city with a celebration of its own, its 300th anniversary.
The anniversary of this Louisiana port city will feature prominently in Fat Tuesday’s festivities.
Rex, New Orleans’ oldest parading Carnival group, is celebrating the tricentennial with 21 of its 28 floats commemorating its history from those who lived in the area before Europeans settled it in 1718 to the Battle of New Orleans in 1815. Other floats in the Rex parade include one for St. Louis Cathedral, the descendant of a church built the year of the city’s founding, and the yellow fever, which killed more than 41,000 people between 1815 and 1905.
Rex and Zulu are the two major parades in New Orleans on Fat Tuesday, which is a state holiday.
Families jam the sidewalks and camp out in the broad medians to watch with small children often perched in wooden seats atop ladders near the front.
Although many people associate Mardi Gras with women flashing their breasts for beads, that occurs mostly in the French Quarter, often from Bourbon Street balconies.
Neighbors Christine Stephens and Tracy Thomas said they stay on the parade route, outside the French Quarter.
“Mardi Gras should be for everyone from 8 months to 88 years old,” Stephens said.
Tuesday’s forecast was for cloudy skies, temperatures in the 60s (15 Celsius), and a 20 percent chance of thunderstorms, which carry the threat of stopping parades.
The holiday climaxes a two-week Carnival season, which draws about 1 million visitors and pumps about $840 million into the city’s economy, according to the New Orleans Convention and Visitors Bureau. It also means two weeks of 12-hour, no-vacation shifts for the city’s police, who are reinforced by 165 state troopers and officers and deputies from half a dozen nearby areas.
Neighborhood organizations are among the first groups out on Mardi Gras. There’s St. Anne’s parade, an eclectic walking parade and the North Side Skull and Bone Gang, which wakes people up and tells children to behave.
The Half-Fast Walking Club, organized by the late clarinetist Pete Fountain, rolls and strolls to the Quarter from the Commander’s Palace restaurant.
Then comes the Zulu Social Aid and Pleasure Club, a historically African-American group that parades in blackface and grass skirts. After Zulu comes Rex which is followed by two “truck parades” with floats built on flatbed trailers and decorated by the families, neighborhood groups and other organizations riding in them.
The family party along the parade routes generally ends after the parades, but the French Quarter’s rowdier Mardi Gras continues until midnight, when a wedge of mounted New Orleans police officers clears the streets.
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