The Washington herald., 1922-06-25
PASSENGERS TAKE
ADVANTAGE OF new
INVENTIONS HELP
Company's New Move Is
Pleasing Surprise to
Those on Ship.
LINKED WITH d. C.
Has 100-Foot Inverted l..
Type Three-Wire Aerial Ex-
tended Between Masts.

Radio messages were picked up
last night from KQSP. the Midland
Of the Norfolk and Washington
Steamship line. The Midland was
Norfolk bound ana was conducting
her first radio communication with
shore and ship stations. Radio ap-
p ratus was installed yesterday by
Lieut. Albert NJ. Pigg. C. ]. Liter
man and Walter A Daniels of the
Radio Research Laboratory of the
Army Signal Corps. A radiophone
receiving set equipped with loud
speaker and Magnavox was placed
amidship for entertainment OF pas
senEers- This Is the first time the
Norfoll- and Washington steamers
have been equipped with radio. II
the officials are satisfied with the
service given on the trip last night
radio will possibly be Installed on
the Southland of the same line
The seagoing appearance Of the
Midland = enhanced greatly by ~
10O foot inver. el l. type three-wirs
aer' al extended between her masts
For the first time in her many trips
to Norfolk she was IL Crmmunica
tion w'-h the rest of the world.
Nnlle OH SnOrt.
Passengers Are Entertained
Not only does the antenna indi
cate her readiness for rece wing and
transmitting radio messages with
ship and shore stations but on the
main deck amidships her passengers
gathered for concerts from distant
rad ophone broadcasting stations
The passengers were entertained
continuously during the evening
hours
Conrlun' cation was established
with wZB. Fort Howard. Md; NAM
Hampton Roads. Va; WHY. Wash
ington: NBZ. Baltimore, Md; MAX,
Naval Academy. Md. and MFN
Quantico.
The radio apparatus which is oi
the duplex type. permitting con-
tinuous communication. without the
usual delay occasioned by using a
transfer switch from receive to senc
consists OF a type BC-SG A Signal
Corps transmItter. ana d BC-So y
signal Corps receiver. The inpu'
voltage of the 4. w. transmitter Is
twelve volts. whereas the output
iS considered good for 500 volts
Antenna radiation of is amperes
j. expected of the set. The phone
transmitter consists of two fifty.
watt power tubes. while testing in
dock, local stations as WMU and
wEAS were worked regularly. and
messages exchanged between Balti'
more and the Signal Corps. The
working wave length of the SCI
Is 600 meters. Under fair condi'
tions $50 miles range is expected
Of the telephone transmitter with &
possible 500 miles on c. w. tele-
graph. This will not be determined
definitely until the return tEip oi
the Midland Monday morning wher
comparisons of signals exchanged
will have been made.
Private Messages sent.
Passengers aboard we're surprised
to see the new radio equipme mt
Before the boat left the dock at
o'clock yesterday afternoon. Ont
passenger arranged with Operator
I.itzerman for dispatching a radio
gram. Two private messages were
dispatched during the evening. Her
course down the Potomac. alway:
within a few miles Of shore and
close by Baltimore and Washing.
ton. makes a radiophone concert
one of the most popular feature:
incident to a trip on the Midland
Situated midships between the port
and starboard sides of the ship, pas
sengPrs lined at either rail ma.
hear the radiophone music ampli'
fed through ths large Magnavoxes
Although no local stations broadcas
Saturday night every other nigh
Of the week Is taken up by a
least two stations. NOF will b'
picked up regularly on Wednesday
and Friday evenings. Several Balti
more broadcasting stations are il
continuous operation.
Airplane We'd with radio last eve.
ming Before the Midland has passed
Hampton Roads, a special bundle o.
Heralds dispatched by airplane from
the Naval Air station at Anacosua
at this morning were dropped of
at the coast station.