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572-6
RADIO BROADCAST ADVERTISER
A Pioneer Leader
AmerTrans continue from month to month as one of the best selling audio transformers o
There is ample volume, and the "tone-keen" characteristic of AmerTrans furnishes a pleasant, distinct reception value — most appreciated by the critical listener. In fact, there is no more efficient and permanent working part in any set than a pair of AmerTrans.
Buy AmerTrans by the Pair
from an Authorized AmerTran Dealer
They are made in two types, one quality — A F 6, ratio 5:1, and A F 7, ratio 3^:1. Price either model, #7.00. ^
AMERICAN TRANSFORMER COMPANY 181 Emmet Street, Newark, N. J.
"Transformer builders for over 24 years'
A single control tuning element for two-control sets!
With a vernier that allows a variation between the two circuits of fifteen points on a 100 point dial !
Can be easily applied to
SUPERHETERODYNES
BROWNING-DRAKE
ROBERTS
HARKNESS
or any set employing two tuning controls.
details on request HANSCOM RADIO DEVICES
Woonsocket Rhode Island
Building Better Service into RADIO PARTS
Aside from recognized radio uses in which no other metals can be substituted, COPPER and its alloys help you to make good radio sets better sets.
For instance, binding posts are superior posts, and battery nuts give best service and satisfaction when made of dependable free-cutting BRASS rod. And—
★ their speedier production makes labor costs lower.
COPPER & BRASS
RESEARCH ASSOCIATION
25 Broadway, New York
^ Tested and approved by Radio Broadcast ^