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RADIO BROADCAST ADVERTISER
69
POWER
PRONOUNCED
S E E "~~ C O
TT'S performance that *• counts! And it doesn't take a critical ear to note the great improvement a set of CeCo Tubes make in reception.
It's a simple matter to avoid disappointing results by making sure that a CeCo Tube occupies each socket of your set.
The exclusive CeCo method of evacuation is largely responsible for their outstanding performance and is directly responsible for their longer operating life for which CeCo tubes have gained a country wide reputation.
No matter what your tube requirements may be — there are CeCo Tubes made to meet every radio need in both A. C. and D. C. types as well as in "special purpose" types which are obtainable no where else.
Try a set of CeCo Tubes and you, too, will find how much belter they improve reception. A CeCo dealer will gladly advise you which types to use to obtain tlte best results.
CeCo Manufacturing Co., Inc.
PROVIDENCE, R. I.
Increased Amplification
Improved Quality with this new valve
Full size illustration of the DA 2 amplifying valve. Price $3.00 each.
Harold P. Donle's Latest Achievement
The inventor of the famous Sodion Detector valve brings out this DA2 6-volt amplifying valve which can be used in any type D. C. set with no changes.
Amplification for both audio and radio frequency are greatly increased, and the quality of your set vastly improved.
Those that have tried these valves are enthusiastic about them.
Here is what some of them say:
"We seem to obtain far greater volume and clarity." "Really, it is the most marvelous valve I have ever come in contact with."
"I have tried two of these tubes in my regular tuned radio frequency broadcast receiver, and I am delighted with the increase in volume and distance obtained."
"Received the four tubes ordered, to-day. Must say that they even exceed all my expectations."
"It is a pleasure to report that the three tubes I received from you Saturday have increased the sensitivity of my Hammarlund-Roberts Hi-Q to a considerable degree. I also tried one in the R. F. stage of a Browning-Drake and there too, the gain was considerable."
"Excellent for low wave sets"
If your dealer has not yet received his stock, mail orders will be promptly filled upon receipt of check.
We Guarantee Every Tube
The Donle Electrical Products Corporation
MERIDEN, CONNECTICUT