Radio Broadcast (May 1928-Apr 1929)

RADIO BROADCAST ADVERTISER 381 Another huge achievement by Frost-Radio has scored another of its characteristic achievements in bringing out a number of new items to supplement its already famous line of parts. Frost now offers the finest and most complete line of radio parts of any manufacturer in the field. Whether you build sets for yourself or for others you will find in this great line practically all of the vital and important parts you require. Your favorite dealer can supply you. Why not get in touch with him today? Frost-Radio Variable High Resistances Offer marvelous control of volume and oscillation. Boiler contact arm is practically frictionless. Bakelite case and dust cover. Supplied in a wide range of resistances. $2.00 and 52.25. Equipped With Approved AC Switch Underwriters' approved AC snap switch fitted to our Variable High Resistance makes ideal combination. Switch is tested to carry 2 50 volts at 3 amperes. $2.75 and $3.00. Frost-Radio Variable High Resistance with DC Switch Another combination of the Frost Variable High Resistance with quickoperating switch having positive "off" position, for use only with battery operated sets. Switch has sterling silver contacts, with German silver springs, and Bakelite insulation is used. $2.35. Frost Gem Variable High Resistance Identical with our larger Resistance Units except in size. The Gem is housed in Bakelite case measuring 1 % x % in., thus saving much space back of panel. $2.25 and $2.50. Frost-Radio Gem Rheostats Mighty good little rheostats, built to give long service and stand the gaff. Take up but little space, are single hole mounting and are easy to solder to. Supplied plain or with DC switch, the latter offering a remarkable combination at minimum cost, as it combines both rheostat and switch. Plain With switch. Frost-Radio Bakelite Rheostats The original aircooled Bakelite rheostat with one-piece moulded frame and resistance wire wound on threaded flexible Bakelite strip. Supplied in a wide range of resistances, $1.00. Po tentiometers, to $2.50. H-25 Frost-Radio Bakelite Rheostat with Switch Battery operated sets find wonderful service in these Frost Rheostats with switch mounted on Bakelite panel. Switch has positive "oft" position, and springs are German silver with sterling silver contacts, 2 to 75 ohms, $1.35. Frost-Radio AO Snap Switch Approved, single hole mount •AC switch 3 amp., 250 v., 75c. Frost-Radio Hum Balancer Ideal for smoothing the ripple out of * AC current. Easy to regulate with screw driver by means of slotted head shaft, $1.00. Frost-Radio Bakelite Cable Plug A remarkable achievement in an all-Bakelite Cable Plug. Terminals are spun into sockets and cannot work loose even when overheated in soldering. Color code molded into Bakelite. Plug is equipped with 5-ft. seven wire braid covered cable with best rubber insulation on individual wires. Plug and cord only, $2.2 5. Baseboard or sub-panel socket, 75c. fROST-RAOlO Frost-Radio Moulded Mica Condensers Finely made and extremely accurate. Guaranteed to within 10%. Unaffected by moisture or climatic changes. Molded Bakelite, with finest quality mica dielectric. Neat, small, easy to attach either to metal subpanel or by means of soldering lugs, 4 5c to 9 0c. Frost-Radio Fixed Resistances Windings are on die cut flexible Bakelite strip, with firmly staked terminals. .4 to 1000 ohms. Also as center tapped resistances to provide grid return in AC sets, 6 to 64 ohms. 15c to 50c. FROST-RADIO UNIVERSAL RESISTANCE KIT Consists of four 2000 ohm potentiometers, three 2 00 0 ohm fixed resistors and one 150 0 ohm fixed resistor. Supplies voltages 0 to 30, 30 to 50, 50 to 70, 90, 135. and 180. Resistors fitted with sliding connections. Complete kit (not illustrated), $9.00. Frost-Radio By-Pass Condensers Accurate capacities and conservative voltage ratings distinguish these new Frost Condensers. Built of best materials, thoroughly seasoned, vacuum impregnated and hermetically sealed. .1 to 2 mfds. 80 c. to $2.00. Frost-Radio 210 Blocking Condensers Built to give superservice, with conservative voltage ratings. Every item of material used in their construction is the very best obtainable. Enclosed in hermetically scaled cases of gold-bronze lacquered metal, with tinned terminals. The best Blocking Condensers money canbuy. $18.00. Frost-Radio Heavy Duty Filter Condensers Like our Blocking Condensers, Frost Filter Condensers are a quality product, mad of the finest linen paper and highest grade foil. Conservatively rated. Will give long service. .5 to 2 mfds, $1.40 to $7.00. Frost-Radio Hook-Up Wire Simply push back the braid for soldering, and slide it back over the soldered joint. No. 18 double cotton covered, impregnated wire. 5 0 ft. roll, 80e. "WORTH MANY TIMES 10c TO ANYONE WHO IS INTERESTED IN RADIO"—Send for this 16-page book today. Those who have sent for the new Frost Data Book tell us it is worth many times the dime asked for postage and mailing. It contains a vast amount of valuable information — tells also about the complete Frost-Radio line — YOU should have a copy. Fill out and mail coupon tO' day. HERBERT H. FROST, INC. Main Office and Factory: ELKHART, IND. | HERBERT H. FROST, Inc. RB10 | 160 No. La Salle Street, Chicago | Send me your new Frost Data Book, containing not only valuable radio in | formation, but also facts about your new line. I enclose 10c. I New York City CHICAGO San Francisco (Are you a professional set builder?. Name Street Address City