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RADIO BROADCAST ADVERTISER
(NSOUNE *
IF YOU want your set to be admired for its beauty, as well as for performance, insist upon an Insuline panel. Insuline is the panel material de luxe. Its richness and finish add the finishing touch of quality to any set.
For those who prefer artistic effects that are less formal we recommend the popular "Frieze" finish. Insuline also comes in a deep Black of the utmost intensity and lustre; and in Mahogany, rivaling the natural wood itself for beauty of graining.
Insuline is also highly desirable from the standpoint of good engineering practice. Its dielectric strength and moisture-repelling surface are features that insure better reception.
A Boon to the Amateur Set Builder
Because Insuline is easily worked with ordinary tools, and does not chip, crack or soften, it is the ideal panel material for the fan who "builds his own." Furnished in all standard sizes; also drilled and engraved for nine well-known circuits.
Don't take a substitute for Insuline. If your dealer can't supply you write us direct. Ask him to show yon Insuline sub-bases fitted with the new patented contacts for UV or UX tubes.
^ RADIO PANEL 8C PARTS CORP.
(Insulating Company of America) Insuline Building 59 Warren St. New York Branches in Principal Cities
Could You Use More Money?
No matter what your present income is, wouldn't you like some
extra cash? Well, here's your chance to get it!
DOUBLEDAY, PAGE &? CO. wish to enlist earnest and reliable
men and women throughout the country who will appreciate an
opportunity to make money. Our plan insures immediate cash returns, in amounts limited only
by your own ability. This is no ordinary subscription proposition. You can't afford to
overlook it.
Write Agents' Service Division
DOUBLEDAY, PAGE & CO. Garden City, N. Y.
"DURHAM"
Variable Leaks
Make Good Tubes Better
Standard Type
For any set. Snap in place of present m fixed leaks. Adjustable in line with / Stf* tube makers' instructions. •
Note
I liij> Patent *s*V plunger
New Panel Mount
$1
Accurate control of detector or audio at your finger tips brings better results. Put in a DURHAM to-day.
There's a DURHAM for every need
No. 100—1,000 to 100,000 ohms (audiol
No. 101—0.1 to 5 megohms (for UV-200 and WD-12 tubes)
No. 201A— 2 to 10 megohms (lor UV-199 or 201A tubes)
DURHAM 6 CO.,Jnc.
"1930 Market St., Philadelplaia "
Increase Distance, Volume, Clarity
"Colytt" adjustable grid leak improves receiving. Gives proper value of leak in grid circuit, and holds it. Simple. * — s compact, easy to install, only one hole
•P 1 UU ^5-^3*1-5, in panel. Tones any tube perfectly.
(?~~-:& Try tne "ColV"" on Comnlete I Money-back guarantee.
F IL--" complete, with fall
directions. 3301
R. B. Colytt Laboratories
565 Washington Blvd., Chicago
Why not subscribe to Radio Broadcast? By the year only $4.00; or two years, #6.00, saving $2.40. Send direct to Doubleday, Page & Company, Garden City, New York.
GENUINE BAKELITE
Radio Panels
We cut, drill and engrave for you Radio Panels of genuine Bakelite.
Send rough sketch for estimate. A properly drilled and engraved panel ready for mounting is half the job of construction. Plain panels shipped C. O. D. same day order is received. Write for New Catalog on Radio Panels, Tubes and Rodsall of genuine Bakelite.
STARRETT MFG. CO. 521 South Green St.
CHICAGO ^L.
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Tested and approved by Radio BROADCAST "At