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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Installation instructions for an Acostinator, external speaker, and antenna.

Identifier  ExFiles\Box 168b\1\  img061
Date  1st January 1938 guessed
  
Insert the "A" lead in its Red receptacle. (Fig. 1.)
Connect the lug end of the "A" lead to the ammeter.
NOTE: The "A" lead, after being connected, should be dressed away from the set so that it does not lay directly on the side or top of the set. If possible, keep "A" lead and dial light lead separated, and routed away from car gauge connections that extend through the bulkhead.

ACOUSTINATOR MOUNTING
The ACOUSTINATOR should be mounted on the edge of the dash at a point that can be conveniently reached from the driver's position, since its adjustment will be so important to complete enjoyment of the receiver. It should be located, however, at a point where it will not interfere with operation of the gear shift lever. (Fig. 2.)
To mount the ACOUSTINATOR, drill two 1/8" holes in the edge of the dash, corresponding to any pair of holes in the mounting plate.
Insert the two self-threading screws through the mounting plate and dash, and draw up tight.
Insert the ACOUSTINATOR plug in its receptacle. (Fig. 1).
Do not wrap the Acostinator cable around high tension leads or other leads that may be "hot" with motor noise.

Fig. 2
Be Sure Acostinator Clears Gear Shift Lever.
Drill 2 Holes with No. 30 Drill in Lip of Instrument Panel and insert No. 8 Self Tapping Sheet Metal Screws.

EXTERNAL SPEAKER
If an external speaker is used to make a dual combination, remove the speaker jumper wire from the voice coil and ground terminals, and plug in the external speaker cord tips in the following order:
White—Voice Coil
Black—Ground
Yellow—Field
Use any Motorola external speaker. NOTE: In P.M. Speaker installations the field terminal is not used.

ANTENNA
The antenna circuit of this receiver can be adjusted to secure maximum efficiency on any type of antenna you may elect to use.
We strongly recommend the Motorola “Clipper” for top installations, particularly in territories where the static is prevalent, or the Motorola “Under-car Antenna” if you prefer.

ANTENNA CONNECTION
Insert the antenna lead-in connector plug into its receptacle. (Fig. 1.)
Splice the lead-in wire on the antenna to the lead extending from the radio set. Tape the splice and telescope the two sections of the junction box together. Use the clamp provided on the junction box to ground it to the car.
— BE SURE TO SCRAPE ALL PAINT AND RUST OFF THE BODY WHERE THE JUNCTION IS GROUNDED.
ON AN “UNDER-CAR ANTENNA” GROUND THE JUNCTION BOX ALWAYS TO THE FRAME.
ON A TOP OR “CLIPPER” ANTENNA GROUND THE JUNCTION BOX ALWAYS TO THE COWL.

ANTENNA ADJUSTMENT
If the preceding instructions have been carefully followed, the receiver is now ready for the adjustment of the antenna trimmer. Proceed as follows:
Loosen the knurled screw nut on the end of the tuner housing and insert the square-tipped end of the flexible tuning shaft in the square receptacle in the SPOT TUNING mechanism.
  
  


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