![]() ![]() North Wing - Early Mississippi - Mostly Battery Sets |
RuralMississippi: the case for Battery Operated Radios |
Electrificationdidn't become common in rural Mississippi until mid century - and telephonesfollowed much later - party lines were common into the 70's -- if a linewas available at all. Radio became a very important part of the farmerslife - providing news, weather, crop and market information -- and of courseentertainment. So there were a great many battery operated sets sold throughoutrural Mississippi - to the farmers and other wealthy folks who could affordthem. Mississippi's urban population was divided along economic lines -the largest segment of population were workers making a humble living -while a much smaller population segment had a fair amount of disposableincome and could afford a luxury of a radio Consequently the number of "electric"(AC Mains) operated sets sold were far fewer than the number of batterysets. And while there were occasional purchases by wealthy families of atruly "luxury" set - far and wide - the average radio sold inMississippi was more of the economy class. In the museum - we have severalbattery radios (and a few "were" sets) that are typical examplesof the types of radios common in Mississippi between 1920 and 1950. |
The two radios presented here both came from the L. P. Tate Homestead andFarm in Winston County. They were purchased at the estate auction in 1992- along with two other radios - a Silvertone Multi-band battery/AC set -and the Ti-Nee-Ra-Di-O crystal set shown below. As typical of radios usedon the rural Mississippi farm, none required AC Mains power. Unfortunately,these two radios had been stored in an out building - and both sufferedsevere water damage. ![]() |
The Crosley Trirdyne 3-R-3 Super Special (1925) - having been made withcheaper materials - fared much worse. The cabinet is nearly a total loss- though enough remains for salvage to allow a reasonable restoration.![]() ![]() The 3-R-3 is an unusual radio in that it is a three tube Super Regenerativereceiver - and in fact an inside label notes the 1919 Armstrong Patent onthe regenerative design. Super Regenerative receivers use the principleof passing a signal through a tube multiple times to get tremendous gainout of a single tube - which allows a radio to be built with 2 or 3 tubesto perform like a 5 or 8 tube set. The down-side to this is that the "regeneration"must be constantly adjusted to match the incoming signal - too little regeneration- and you can't hear the station. Too much regeneration - and the set goesinto oscillation - making a terribly loud squeal. While less expensive thana conventional circuit - and often times capable of out-performing them- the regenerative receiver was a pain to use - and people often becameirritated with their "quirky" behavior - and replaced them withsomething much more satisfying to listen to. This is a common scenario:the Crosley would be purchased first - because of it's lower price. Aftera short while - but now thoroughly hooked on radio - the buyer was backlooking for a better set - even if it meant buying that Atwater Kent attwice the price. |
In spite of the fact that Atwater Kent Radios were expensive comparedto most other brands - many of the wealthier Mississippi families treatedthemselves to that luxury - and "suffered" the envy of their neighborsand friends. This 1925 Atwater Kent Model 21 is typical of the new verysmall parlor sets that could be made with the advent of the UX/UV199 lowpower tube (It's footprint is just over one-half that of the 20 Big Boxabove).![]() ![]() |
![]() Speaking of batteries -- In the very early battery radios - the batteries came in two parts - the low voltage high current battery that supplied the tube's heater (filament) current - called "A" cells or A Battery. The high voltage low current battery that supplied the plate current that the tubes operated on: called "B" Cells or B Battery. To this day we still call the main supply in electronics the B+ supply... old habits and all that... Anyway - from 1900 through the late 20's - the B cells were made like flashlight batteries - with the cells connected in series to get the required B+ usually somewhere between 67 and 120 volts - with 90V being usual. Because the current draw was comparatively low (.01 to .02 amps - depending on how loud the set was run) - so the B Battery lasted quite a long time (several months or an hour or so a day). The A battery - however had anywhere from .75 to 1.5 Amps draw - a few hours - and the A battery was dead. So these were wet cells - rechargable like car batteries - large, heavy - acid spills - oops sorry about the carpet! Not real popular. By the late 30's Philco and others had perfected better cells - and coupled with new tubes whose filaments only need .05 amp at 1.5 volts - and they could actually put all of the cells - A and B cells - in a single case. ![]() |
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Copyright © 1996, The Mississippi Historical Radio and Broadcasting Society. |