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RCA Manufacturing || Victor Talking MachineYear: 1934Category

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mj19696's loves6 of 56Loetz vase ca. 1925 - 1935Oud Afghaanse zilveren ring???
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    Posted 1 month ago

    Wayne1977
    (1 item)

    RCA Manufacturing || Victor Talking MachineYear: 1934Category: Car Radio, perhaps also + sound player/recorderValves / Tubes5: 78 6A7 6B7 41 1-VMain principleSuperhet with RF-stage; ZF/IF 175 kHzTuned circuits5 AM circuit(s)Wave bandsBroadcast only (MW).DetailsPower type and voltageLine / Storage batteries (perhaps also batteries) / 105-125 / 6 VoltLoudspeakerElectro Magnetic Dynamic LS (moving-coil with field excitation coil)Power out3.6 W (unknown quality)from Model: M116 - RCA RCA Victor Co. Inc.; NewShapePortable set 8 inch (usable also without mains)NotesAC 40 watts, DC battery 5.7 amp. at 6.3 volts. This receiver uses a vibrator inverter-rectifier for supplying all plate and grid voltages when operated from battery source.

    Comments

    1. AnythingObscure AnythingObscure, 30 days ago
      Despite your excellent reporting of all its various 'specs' Wayne, I remain at a complete loss as to what this thing actually *is/was*...is its "dial face" actually a radio tuning gauge? It just doesn't quite look like it is calibrated to be that, to me...??
    2. blunderbuss2 blunderbuss2, 30 days ago
      Sa wha ?
    3. keramikos keramikos, 29 days ago
      Wayne1977, Cool. :-)

      AnythingObscure, Apparently, it's a portable automobile radio. However, even the radio museum contributor seems a bit unsure of all its capabilities, saying that it's also possibly also a player/recorder:

      https://www.radiomuseum.org/r/rca_m116.html

      There was a schematic, and more explanatory text, but I had to jump through multiple hoops (email, PDF->JPG->Text) to get anything readable, so please forgive me for not touching up all the conversion errors:

      *snip*


      The instrument should be operated as follows: 1. Turn the Power Switch to the "AUTO' position for automobile service or to the "AC' position for home service. At this point, normal functioning will be evidenced by illumination of the tuning dial, although it will be necessary to wait a few seconds for the Radiotrons to attain their proper operating temperature before reception possible. 2. With the Volume Control turned fully clock wise, rotate the Station Selector in either direction until a desirable station program is heard. NOTE—The dial scale is calibrated in channels to at in station identification. Add one cipher to the seal: numerals to obtain frequency in kilocycles. 3. After receiving a signal, turn the Volume Control counter-clockwise until the volume is re-duced to a low level. Now, readjust the Station Selector to the position midway between the points where the signal becomes distorted or disappears. This operation insures the best quality of reproduction. 4. Finally, advance the Volume Control (clock-wise) until the desirthed level is obtained. Except
      MAIN
      !initial Installation—If the receiver eithe peiforms imperfectly or fails to operate when firs connected to the power supply (preferably the home lighting circuit for an initial test) it is probable tha one or more of the tubes or dome-terminal (grid) clips have been jarred loose in shipment. Wit the five control knobs detached, remove the fou screws at the outside edges of the bottom pane and lift off the case. Then examine the tube in stallation, referring tothe diagram printed on th rating label, and make certain that all Radiotron are properly inserted and that the spring clips o the short flexible (grid) leads are pressed dow firmly over the respective dome terminals. Radiotrons—The Radiotrons should be tcste periodically and replaced if necessary in orde to maintain best performance. The efficiency o each Radiotron may be checked by compariso with a new one of the same type in its place. Spare Radiotrons of each type should be kept on hand. Fuse—For automobile service, the instrument is protected by a fuse contained in the fuse receptacle attached to the battery cable. If the set fails to operate and the dial lamp does not light, this fuse should he removed for examination. If found to be burned out, the wiring should be inspected for short-circuits or grounds and all tubes tested prior to in. .0161 (5-5)
      ATION
      on weak signals, the automatic volume con rol will maintain the volu e substantially at th latter level, thereby pre luding further manual adjust-ments. (Fading o the signal may be exp rienced in extreme cases, a. when passing under br dges or other metallic str ctures, since such st uctures almost completely hield the antenna.)
      5. Adjust the one Control for the p tonal shading. all-range reproduction obtained when th control knob is turn clockwise. Treble response may be red desired and static •nterference (when prese be decreased by tur ing the knob counter-cl
      6. The Sensitiv left in the counter-maximum distance interference is obje is preferred, this SN most satisfactory ri
      ty Switch ordinarily sh ocktvise position which reception. At times whe tionable or when local r itch should be set clock sults.
      eferred ill be d fully ced as t) may ckwise. uld be rovides static ception vise for
      7. When throu h operating, turn the Power Switch to the opposite position; that is, to th• "AC" position to discont nue automobile service and to the "AUTO" posit on to discontinue home service.
      ENANCE
      E
      sertion of a new fu of the same ampere Vibrator "B" operating from th slight buzz should receiver. This buzz proper operation of this buzz, accomp placement of the fu and, in such cases, taken to the deale to adjust the vibrato Automobile roof antenna of the require no attentio employed, the insu occasionally to pre
      e. The replacement fuse must be ating. Battery Elimina to automobile storage ba e noticed to emanate f should be taken as indic the vibrator. Failure to nied by repeated neces e, will denote a faulty co the complete receiver sh for inspection. Do not yourself. ntenna—A properly oncealed or interior typ . When the plate ant ator bushings should be ent grounding.
      Automobile I nition System—The•system of the car ust be kept in good co Fouled plugs or h lugs with improperly a gaps will affect the operation of the receiver as of the automobile. Burned or improp justed breaker points will also impair the p ante. It will be advisable to advance the ge charging rate in order to compensate for t tional drain on the car storage battery imp this instrument.
      When tery, a om the tive of observe ary re-dition, uld be attempt
      stalled should nna is leaned
      gnition dition. j usted as well rly ad-rform-erator e addi-sed by
      E -a

      *snip*

      https://www.radiomuseum.org/lf/b/the-radio-collector-s-directory-and-price-guide-1921-1965_edition2/
    4. blunderbuss2 blunderbuss2, 29 days ago
      Glad that's cleared up ! Sa wha ?
    5. keramikos keramikos, 28 days ago
      blunderbuss2, Fixed it for you:

      Radio
    6. AnythingObscure AnythingObscure, 28 days ago
      <LOLOL> at you guys -- and thanks again keramikos for all your research and reporting about this weird old radio! (I guess...?) :-) :-) :-)
    7. keramikos keramikos, 28 days ago
      AnythingObscure, Out of all that verbiage from the Radio Museum document:

      "At this point, normal functioning will be evidenced by illumination of the tuning dial..."

      You can get a replacement dial:

      *snip*

      Plastic dial for General Electric B52, RCA M116. General Electric part number 4017.

      *snip*

      http://www.radiodaze.com/general-electric-b52-rca-m116-dial-item-ds-a352/

      The original literature available with this one describes it as a "Portette":

      https://www.worthpoint.com/worthopedia/vintage-1934-rca-victor-116-1896830491

      However, the shipping weight on this one suggests that our definition of what is portable has changed:

      *snip*

      The radio is all metal and very heavy.The weight to ship this is 28lbs.

      *snip*

      https://www.worthpoint.com/worthopedia/rca-victor-m116-radio
    8. AnythingObscure AnythingObscure, 28 days ago
      :-) :-) :-) :-) :-)
    9. keramikos keramikos, 28 days ago
      AnythingObscure, You're welcome. :-)

      A couple more revealing tidbits:

      *snip*

      ...this is that self-contained portable radio with a handle on top designed to sit on the floorboard.

      *snip*

      GE model B-52 was also released as the RCA Portable "Arm Rest" Automobile and Home Receiver, model M116. Two separate power transformers allowed it to operate on 6VDC or 115VAC 60 cycle power.

      *snip*

      https://www.antiqueradios.com/forums/viewtopic.php?f=15&t=263892&view=next
    10. blunderbuss2 blunderbuss2, 28 days ago
      Thanks Keramikos for putting that into my mental realm. 28 lbs. portable ? Well, I guess a bag of Portland cement is considered portable too. LOL !
    11. keramikos keramikos, 28 days ago
      blunderbuss2, You're welcome. };-)

      Yeah, at twenty-plus pounds, most people probably wouldn't want to lug one from one end of Chicago O'Hare to the other.

      It got me to wondering about the weight of that huge boombox carried by character Radio Raheem in "Do the Right Thing":

      *snip*

      The J-1 is a large boombox measuring in at 31 inches long and 16 1/2 inches high and weighs in at around 25 pounds.

      *snip*

      https://classicboombox.com/tecsonic-j-1-super-jumbo

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