Restraining Tone in Loud Speaker Technology
A historical article discusses amplifier and loud speaker tuning to preserve original tone while maximizing sound output. It covers inter stage transformers, distortion causes, diaphragm and horn design, and practical setup for two stage amplifiers. It also explains the test buzzer method for crystal detectors to improve reception without expensive tube detectors.
Static and Sandstorms Deliver Hazard to Sahara Radios
An Algiers writer in Wireless Age notes Saharan static is violent as sandstorms. High winds charge antennas causing dangerous discharges that flash between condenser plates and posts. Grounding and isolation protect operators from painful shocks and equipment damage.
MENTIONED IN THIS ARTICLE
Saharas
Raoul Moha
Algiers
New Radio Set Sends Sound Through Solids
A compact radio set, 15 inches square and seven pounds, uses a new magnetic wave to transmit sound through steel or concrete. It requires no aerial or ground, works with a single station or between rooms, and could aid entombed miners or vault security by enabling interior communication.
Norway’s Big Station On Rundeman Den Modernized
The Rundeman den radio station near Bergen is being upgraded with higher power and radio telephone gear. With a 3000 kilometer range, direct link to American stations is expected, and radio telephones covering 600 miles will connect with England and continental Europe stations.
MENTIONED IN THIS ARTICLE
Norway
Rundemanden
Bergen
Scientific American
England
Europe
How to Tune for Music on Early Radio Sets
The article explains that hearing the carrier wave before the music means tube filament current is high and the set is oscillating. This heterodyning helps locate a broadcasting station, after which you can tune to the music and reduce filament current for proper adjustment.
Mountbatten Plans Naval Radio Work In Navy Tour
Lord Louis Mountbatten, famed for his remarks about "the bird," says he will specialize in naval radio as a lieutenant in the British Navy while touring America on his honeymoon with Edwina Ashley.
Government radio station at Annapolis builds 12 miles of heated antennae
The government's most powerful radio station in Annapolis operates six 600 foot towers with twelve miles of antennae wire. To prevent ice buildup from sleet and ice weighing as much as seven tons, the wires are kept heated by electrical current.
MENTIONED IN THIS ARTICLE
Annapolis
Chile set to place broadcasting under public control
Chile prepares legislation to regulate radio broadcasting by public enterprise, aligning with U S practice of state influenced oversight and ownership of stations.
MENTIONED IN THIS ARTICLE
Chile
United States
Radio Dances on Ships
Radio furnishes dance music aboard ships with lively tunes and steady programming promising onboard entertainment during voyages. The feature notes the growing use of wireless music to boost morale and passenger experience at sea.
Semi formal frocks embrace straight line and draped silhouettes
Two afternoon party frocks illustrated showcase rival styles ranging from straight line to draped Grecian silhouettes. The mode favors fuller skirts with Canton crepe or crepe back satin, lace overlays, tiered flounces, and ribbon rose embellishments paired with matching hair ornaments and grape clusters for a coordinated look.
MENTIONED IN THIS ARTICLE
Peggy Wood
Leok Demure
Varieties of sweet potatoes and uses in households
USDA study groups eight classes of North American sweet potatoes with forty named varieties and hundreds of minor names. The guide notes textures from dry mealy to juicy, offers selection tips for meals, and provides typical recipes like Sweet Potato Puff Baked Sweet Potatoes and Escalloped Sweet Potatoes and Meat.
MENTIONED IN THIS ARTICLE
United States Department of Agriculture
United States
Michigan
United States ‘Department of Agriculture
Marketing methods improved in South
South Carolina extension workers guide women to standardize and boost output in home preserves and eggs. In Charleston county alone over 70 women now ship graded eggs weekly. fattening poultry before sale becomes standard. Nine women make market preserves and jelly, with one pioneer planning a 10 000 container output.
MENTIONED IN THIS ARTICLE
United States Department of Agriculture
South Carolina
Charleston County
South Carolina Home Producers’ Association
Grapefruit Jelly Recipe From USDA Directions
Grapefruit jelly is prepared by following the bitter orange jelly method with three quarters of a pound of sugar added per pound of fruit. This method is provided by the United States Department of Agriculture.
MENTIONED IN THIS ARTICLE
United States Department of Agriculture
Farm women remade garments after extension agent demos
Old garments were remodeled by county farm women last year. Reports to the U S Department of Agriculture show 55 600 up to date articles of apparel produced and, under similar instruction, 105 000 new garments were made.
MENTIONED IN THIS ARTICLE
United States Department of Agriculture
Household Tips for Home Maintenance and Flavor
Practical household hints on removing rust with ammonia and salt, using coffee in baking, filling holes with putty mustard and glass, clearing grease blocked drains with kerosene, quieting squeaky hinges with vaseline, and painting wide plank floors with a center line to mimic parrow boards.