Radio Broadcast (Nov 1926-Apr 1927)

198 RADIO BROADCAST ADVERTISER Adapters for all tube and socket combinations Na-Ald Adapters are indispensable to the set owner and set builder who wants a simple and instantaneous means of adapting any particular type of tube to the particular type of socket that is used in his set. For instance, if your set is now equipped with standard 201A sockets, and you want to use the small UV199 type tube, simply insert the Na-Ald Adapter No. 429 into the 201A socket and insert the 199 tube into the adapter. The various types of Na-Ald Adapters are given below. Specify them for best results: U For adapting small UX 199 and UX 120 tubes to UV 201A sockets, use iy*ljj»> Na-Ald Adapter No. 419X. Price 35«S No. 419X To bring up-to-date and decidedly improve the Radiola III and IIIA and similar sets employing WD II Tubes, use Na-Ald Adapter No. 42 iX. Price 75t No. 42 IX For adapting UV 199 tubes to standard 20 1 A sockets use the Na-Ald No. 42cf_Adapter. Price 75^. No. 429 To adapt all UX tubes and UV 201A tubes to UV 199 sockets use Na-Ald Adapter No. 999. Price $1.00. Na-Ald Adapters are sold by all good radio stores No. 999 and carry the Na-Ald unconditional guarantee. ALDEN MANUFACTURING CO. Dept. B-20 Springfield, Mass. Shielded Tuned Radio Transformer, No. 30 SICKLES DiamondWeave Coils THE new Sickles Shielded Tuned Radio Transformer prevents both outside and local interference. It is remarkably compact, sharp tuning, sturdy. Sickles Diamond-weave coils have established an enviable reputation for low distributed capacity, low dielectric losses, and large range of frequency with small variable capacity. The ideal coil for the Naald Localized Control Tuning Unit and for the Truphonic Catacomb Assembly. There are Sickles Diamond Weave Coils for all Leading Circuits. The F. W. Sickles Co. 132 Union Street -fc SPRINGFIELD, MASS. COIL PRICES No. 30 Shielded Transformer $2.00 each No. 24 Browning-Drake 7.50 Set No. 18A Roberts Circuit 8.00 " No. 25 Aristocrat Circuit 8.00 " Gives more power. Will not over-charge. Will not freeze at any temperature. Batteries filled with STA-CHARGE need not be stored in winter. Will more than double the life of the Battery. MR. BURKHART EXPLAINS 'I FOLLOWING inquiries by battery servicestation men to whom Sta-Charge had been offered, the National Better Business Bureau wrote the Kel-Bur Products Company and asked how Sta-Charge could perform so many apparent violations of the laws of electrolytic chemistry. The reply, over the signature of L. E. Burkhart, General Manager, was (verbatim): "The reason that we make the claims for StaCharge that we do, are because those claims are true." ENRICH BATTERY SAVER pQUALLY modest are the claims made in advertising by the Mid-West Sales Corporation, formerly at 324 Temple Bar Building, Cincinnati, Ohio, now operating from 3515 Stacey Avenue, Cincinnati, Ohio. Quarter-page newspaper advertisements have carried this message to motorists: Double the Life of Your Battery Put ENRICH BATTERY SAVER into your battery and double its life. This newly developed compound will lengthen the life of your battery from two to five years. It does away with sulphation and its accompanying bad effect on the battery plates. YOUR AUTOMOBILE BATTERY CHARGED FOR TWO YEARS ENRICH BATTERY SAVER charges your automobile battery for two years, if your generator is working properly. No matter how much current is used for lighting and starting, the generator is able to keep the battery fully charged. ENRICH BATTERY SAVER IS BATTERY INSURANCE ENRICH BATTERY SAVER insures you against a host of battery troubles which afflict the battery owner and keep him paying out good money to keep his battery in good condition. A circular enclosed with form letters issued over the signature of George Henry, VicePresident, contain, among other statements: Batteries, treated with ENRICH BATTERY SAVER, send a hotter, fatter, spark to the cylinders. The gas is exploded at the proper time, and more power is developed. You get more mileage per gallon of gas. Better combustion prevents the formation of carbon. ENRICH BATTERY SAVER keeps your automobile battery charged for years, provided your generator is working properly. It doubles the life of automobile and electrolyte batteries — it makes for quicker starting and more effective ignition — it does away with a host of battery troubles. A small booklet, entitled "Your Storage Battery" advises the battery owner: "Forget battery troubles— Use ENRICH BATTERY SAVER." Samples of the two above products were purchased in the open market and analyzed and tested in the laboratories of an institution of national reputation. It was found that StaCharge and Enrich Battery Saver are practically the same. They consist essentially of commercial magnesium sulphate (epsom salts) to which some potassium-aluminum sulphate has been added. Undoubtedly, they are made in accordance with the same formula. Several of the Enrich Battery Saver cartons have StaCharge labels under the covering which de scribes them as "Enrich Battery Saver." E^;' carton contains 3 ounces of the salt mixture and directions for their use are about the same. We quote below the recapitulations of the findings submitted by the engineer who conducted tests on these products: Additions of Sta-Charge or Enrich Battery Saver do not make it possible to recharge a lead storage battery any more rapidly than under normal conditions. Additions of Sta-Charge or Enrich Battery Saver do not make it possible for a battery to show an increase in energy after standing idle an hour or so greater than with an ordinary cell. Additions of Sta-Charge or Enrich Battery Saver do not make it possible to recharge a fully discharged battery in ten to twenty minutes. Additions of Sta-Charge or Enrich Battery Saver do not prevent formation of normal sulphate on cell discharge. Additions of Sta-Charge or Enrich Battery Saver do not quickly restore the capacity of a sulphated cell. Additions of Sta-Charge or Enrich Battery Saver do not increase the capacity of a lead cell; on the contrary a slight reduction in capacity may even result. STA-CHARGE RE-CHARGES RUN-DOWN BATTERIES IN 20 MINUTES ASK FOR DEMONSTRATION A STA-CHARGE WINDOW CARD Additions of Sta-Charge or Enrich Battery Saver will not prevent lead cells from freezing. Additions of Sta-Charge or Enrich Battery Saver do not prevent over charge. Additions of Sta-Charge or Enrich Battery Saver do not reduce shedding of active material. Additions of Sta-Charge or Enrich Batter}' Saver do not prevent buckling or warping of plates. The fact is that additions of either one of these salt mixtures to the lead cell electrolyte accomplished no useful effect whatsoever. Recent quotations on epsom salts were obtained by the Better Business Bureau. Technical grades are quoted at $1.20 to $1.30 per hundred pounds, and United States Pharmacopcera quality is sold at $1.75 to $2.00 per hundred. As Sta-Charge and Enrich were sold to their agents at $6.50 (cash price) for 54 ounces, the margin for these advertisers wasn't so bad. The radio fan or motorist is asked to pay $1.00 for a substance which is sold under its own name at a small fraction of that amount. YOUR STORAGE BATTERY A STORAGE battery is not a black box of mystery. It is a compact and sturdy electrical device which performs in accordance with recognized laws of electro-chemistry, just as an •fa Examined and approved by Radio Broadcast -jc