The Ely miner. [volume] (Ely, Minn.) 1895-1986, 1925-11-13

erS and enthusiasts who have come
to witness the performance of our new
outfit, as being far superior TO most
receivers they have seen or heard. We
believe this receiver will do much to
endear radio to those music lovers
who up to the present time have felt
that radio reproduction was not suf-
ficiently free from flaws to produce the
music they love with true fidelity.
Famous for Tone Quality.
SIN the Radio Broadcast 'AriStocrat'
there is one stage of tuned neutral
lied, radio-frequency application, a
regenerative detector, and three stages
of resistance-coupled amplificatiOn. Be
fore going, let it be said that the
resistance-coupled amplification en-
plOyed should not be confused with
similar systems described in the past
because it is now possible to maintain
tone quality, for which this type of
amplifier is famous, together with
great volume, due TO the foresighted-
ness of some of the tube manufacture
ers who are now marketing what are
known as high-Mu tubes. These tubes
are specially designed for resistance
coupled application and the ampli'
fication per stage which is obtainable
with them is far greater than has
heretofore been generally possible.
LAS was mentioned above, tuning Is
accomplished by single dial. This
n inl fc, 70
single-control unit and is the main
tuning control. 1t is unique arrange
ment of two Remler condensers, geared
together in a manner which makes
tuning of the antenna and radio-fre-
quency circuits simultaneous. The
panel is Z by IS inches and there is
plenty of room on it for all the equip
ment necessary, when q sub-base Is
employed.
"The tuning inductances and the
variable condenser assembly, antenna
switch and battery switch are mounted
on the main panel, while all the re-
naming equipment is either on the
top or bottom of a 212 by 171a-inch
subpanel, which is suspended from the
main panel by means of Benjamin No.
600 brackets. On the upper side of
the subpanel are mounted the five tube
sockets, three resisto-couplers, the grid
condenser and leak mounting, and the
variable neutralizing condenser. 1t Is
also possible to find room for all the
binding posts, including those for the
Co hn ~ hof -
they are thought to be desirable. On
the under side of the subpanel there
are five mountings which are used for
the filament ballast resistors.
Lists of Parts.
One by Is panel.
One 2k by 171a subpanel.
One Hanscom S. G. condenser unit.
One set Eastern knockout coils.
One Carter filament switch.
Two Apex knobs.
Five Benjamin sockets.
Three Daven reSisto-couplers with
three L megohm resistors and one
each 1 meg, b meg, and .25 meg. re-
sisters.
Ou6 hdlHLudilunu uculIdllALuS Gull
denser.
Two .004 Sangamo fixed condensers
One Dubilier 8 microfarad bypass
condenser.
Six Daven No. so mountings.
One Daven leakandenser "a new
unit which combines the grid con-
denser and Leak.
Five Daven ballast resistors (the
capacity of these resistors depends on
the type of the tubes used).
One Belden standard color, five wire
cable.
Two Benjamin No. 600 brackets.
Two to six Eby binding posts.
Two dozen 6 or S-32 round head,
brass machine screws. n inch long.
1.-THE five ballast resistors are shown
in the diagram as R1-2-3-4-5. The Sc
lection of these will depend entirely
on the types of tubes employed. The
ideal combination of tubes consists in
the use of two ordinary six-volt stor-
age battery tubes for the radio-fre-
quency amplifier and the detector, two
high-Mu tubes for the first two stages
of audio, with semipower tube in the
first stage.