Evolution of the radio receiver from many controls to simple tuning
An examination traces how early radio sets required multiple knobs and many tubes, while later models favor a single or few controls. The shift to one-hand operation arises as the tuned radio frequency stage complexity grows, with tubes and auxiliary gear expanding behind the panel.
MENTIONED IN THIS ARTICLE
Seach Dhat
Inter
Difference Between Soft and Hard Vacuum Tubes
The article explains soft tubes containing gas used as detectors and hard vacuum tubes used for amplification. It covers operating voltages, required adjustments, and detector benefits, plus notes on connections and recent detector tube models like the 200 A. It also discusses trickle chargers for batteries and new charging options.
MENTIONED IN THIS ARTICLE
Radio Broadcast
Battery power units push A battery ahead in radios
The piece describes the A battery gaining ground as a power source for radio sets, while B batteries lose ground to B eliminator. It notes the A battery's resilience with the trigltle charger reducing the need for frequent charging, and introduces a new A power unit using a small storage battery.
Vacuum Tube Light Does Not Indicate Sensitivity
The article explains that light output from vacuum tubes, whether coated or uncoated, does not reflect their sensitivity or condition. Inner mercury coatings obscure light, so brightness through the glass is not a reliable measure of performance.
Correct Tube Mounting Position Avoid sagging and damage
The manual stresses mounting tubes vertically at all times to prevent the heated filament from sagging and contacting the grid or plate. A vertical orientation, whether hanging or standing, keeps the filament from touching other elements and reduces damage risks.
State Police Seek Increased Patrols and Posts in Michigan
Tourist associations back plans by the Michigan Department of Public Safety for a two year funding raise to expand uniformed patrols. Legislature action is awaited to authorize more posts near Adrian and Pruddenville and to support highway patrols and related enforcement activities.
MENTIONED IN THIS ARTICLE
Michigan Department of Public Safety
Department of Public Safety
Detective Bureau
Connecticut
Michigan
Adrian
Pruddenville
Chicago-Detroit
New Jersey
Maryland
Many Young Men Seek State Trooper Positions
The New Jersey State Police report 1,800 applications for 26 vacancies after a two day exam at Trenton. About 400 youths attended the State House preparing for mental physical medical and oral tests. Successful recruits will undergo training and be assigned to rural districts within three months.
MENTIONED IN THIS ARTICLE
New Jersey
Trenton
State House
Massachusetts Proposes To Boost State Police Strength
The Massachusetts State Police may grow from 140 to 209 troopers immediately, with a plan to reach 300 over two years. General Alfred B. Foote advocates a swift manpower expansion, backed by bipartisan legislative committee support and a hearing with a favorable outlook. Representative Slater Washburn introduced the bill, which has broad public backing.
MENTIONED IN THIS ARTICLE
Alfred B. Foote
Slater Washburn
Worcester
Proper Feeding Pays Dairyman
An Indiana Farmer's Guide summary notes feed costs are the largest milk production expense, often 50 to 66 percent. It recommends an ideal mix of legume hay, corn silage or roots, and fattening grains with seed meals, plus daily rations scaled to weight. A 1000-pound cow would get about 30 pounds silage and 10 pounds hay daily. grain scales with milk output.
MENTIONED IN THIS ARTICLE
G. Heebink
South Dakota
Desirable Calf Rations for Home Use
Describes a corn and oats mix with 10 percent Museed meal for a nine month old calf. Begin two to three pounds daily, increase over 20 to 30 days, then let the animal decide its intake. Include a small amount of roughage such as mixed hay or clover hay as the diet shifts to grain.
Fall Freshening Proven Best for Dairy Cows
Dairy reports from experiments long ago show fall freshening yields more money for farmers. September pastures are richer than August, while August heat harms cows and calves. Cooling rains in September green pastures and give cows a better start with freshening.
Dairy Hints for Quality Milk and Feed Practices
COCODOOOOOOCOOK notes emphasize that a good cow needs seeds of less bulky, more concentrated nutrition. Regular cream deliveries, at least three times weekly in winter, ensure quality. Clean milking reduces germ contamination. Protein supplements and mill feeds may be cheaper now than soon. Calves should begin hay and grain at a small age, fed with alfalfa or clover hay for nutrition.
Attractive Dress Values in washable radium silk
Dainty summer shades in plain and plaid washable radium silk dresses. Smart styles for petite women with long sleeves. Sizes 13 15 and 17 priced at 9.75 dollars.
Also Mentioned on This Page
Massachusetts
Legislative Committee On Public Safety
Ways and Means
Cocodoooooocook