Evening star. [volume] (Washington, D.C.) 1854-1972, 1931-05-24

President makes an address,
whether in or out of Washing
ton, the microphone will follow
him.
Since taking office President
Hoover has set record for preSi-
Dental broadcaStS. He has spoken,
beginning with his inaugural adj
dreess March 4, 1929, 40 times, and
his Memorial day speech at Valley
Forge will mark his fiftieth. Each
time radio carried his voice to the
American people,
Former President Coolidge was
a frequent radio speaker, particu-
larly in his last two years in Office.
In the>seven years of his admin
istration, however, Mr.. Coolidge
faced the microphone 81 times.
Before the end of his present
term Mr.. Hoover probably will
double that number
In addition to the Memorial day
| address, the N. B. G. and Columbia
networks are making arrange
mentS to handle the three speeches
President Hoover is to make in
June in Ohio, Indiana and Illinois.
The first is scheduled June Is at
Indianapolis, when he will speak
at the convention of the Indiana
Republican State Editorial Asso-
citation. The following day he will
speak in Marion, Ohio, at the
dedication of the Harding Me-
mortal, and June II he will make
the third and final address at the
dedication of the Lincoln Me-
mortal in Springfield, Ill.
MORE than one-half of the
4V4 families of Montgomery
County, Md, had radio receiving
sets a year ago-about equivalent
to the radio population" Of
Washington - the United States
Census Bureau announced last
week.
Making public statistics for
Maryland as part of its country
wide census of radio receiving sets
which was taken along with the
population census last year, the
bureau discloSes that Montgomery
County had 1911 families April l
last year. Of these, 6,095, or SIS
per cent, had radio sets. When
the last census was computed in
1920 Montgomery County had only
7,712 families.
Prince Georges County reported
radio set population Of ass per
cent, with 6,195 Of its 1897 farni-
lies having sets as of April l..
In 1920 this county had total Of
9,397 families.
According to the bureaus fig
ures for the District of Columbia,
announced two months ago, $50
per cent of its total number of
families had sets. AS of April /,
1880, it had 1904 families, with
81 $50 possessing sets.
Maryland, as a whole, reported
that 429 per cent of its total
number of families had sets. The
number of families in the State
on April /, 1880, was 386,087 as
compared with 324,742 in 1920.
The number reporting radio sets
was 165 ,465. The number of per-
sons per family in 1880 was AZ, as
against as in 1920
Less than one-half of the Balti-
more City families had sets. This
| city had a total of 194.49I families
on April /, 1880, with 95, 108 Of
them, or 4S.s per cent, reporting
sets.
ITO insure good reception replace
L the tubes in your radio re-
ceiving set at least once a year,
advises Federal Radio Commits
sioner H. A. Lafount. Don't wait
until the tube burns out, he adds,
because depreciation of tubes is
gradual and consequently un-
noticeable. If your old tubes are
all replaced with new ones you
will notice a surprising improve
ment in the quality of reception
even on some old receiving sets,
the commissioner says.
Many set owners pay too lit
tie attention to the hearts Of
receivers. The tubes do the real
work, but like most mechanical
devices they will wear out. An
automobile, no matter how per-
fectly constructed, would not
travel great distance without oil.
Manufacturers tell US to change
the oil every 500 miles-not be-
cause it has disappeared, but be-
cause it has lost its efficiency.
Many of it's virtues End character
istics have disappeared although
the fluid itself remains.
This is to a great extent true
of the tubes in your radio set.
People often complain that recep-
ton is not satisfactory when per-
haps they are using tubes from
one to three years old. If you ex-
pect the reproduction of all sounds
and the harmony which is trans
mitted it is wise to replace all the
tubes, even though they have not
completely burned out"
D EPLTES to questions put to
N leading radio advertisers and
radio station managers, checked
against their own stop-watch OBJ
Servations, have led the editors
of Radio Retailing to estimate
that advertising occupies II per
cent of the radio listeners time.
This calculation applies, however,
only to the networks and the