l8 liq 1948 

SUBJECT: Cemmunicatien Facilities Plan. 

The preparation of this plan will be initiated immediately and will 

be sub-divided into feur projects. . 

Preject 81-20-48 entitled Communication Facilities Plan; teletype 

equipment, will be assigned to Mr. Smith. 

Project 81-21-48 entitled Commun~cation Facilities P~n; radie 

equipment, will be assigned te Mr. Wolf"and. 

Project 81-22-48 entitled CQllllllUDication Facilities Plan; wire f'acilities 

and telephame equipment., will be a~signed to Captain Luce. 

Preject 81-23.qg entitled Co.mmunication Facilit'ies Plan; facsimile and 

television equipment, will be assigned to Mr. Scott. 

\. 

The preparation of' this plan will be acccmplished in three sections .. 

Sectien l • equipment in use 

characteristics 

hw used 

by whem 

advap~ages 

disadvantages 

Section 2 • equipnent under develepment" 

characteristic a 

by whom 

histery et develeJ!Dent • 

MC's 

Technical Committee action 

specifications 

Sectien 3 • future. trends 

Review ef the first two sections with indicated 

cemmunication plans fer each service as develGped 

in these first two sections. Full development 

et future trends. 

@'pp roved for Release by NSA on 10-30-2013 pursuantto E .0. 1352a I 
REF ID:A66755 e 

This plan will be prepared in chart form wherever practical. Each 

section shall be l.ayed eut in the same manner for each four projects. Coerdinatien as to details et l.ay'Gut will be coordinated at a later date. 

The fellowing subjects will have te be investigated under Project 

Sl-20-48: 

Teletypewriters 

Perforators 

Repertoraters 

Typing reperf'erators 

Transmitting distributors 

Diplex 

IBM printers 

:McElroy printers 

Test equipment 

Teletype analyzers 

Multiplex 

Time Division ' 

Electronic 

Carrier 

Telet11'8 only 

Switchboard 

Repeaters 

The following organizations sheuld be contacted concerning this project:. 

Teletype Corperation 

Klienscbmidt 

Lorenz (IBM) 

Signal Corps (McElrey) 

Air Force 

Nav 

Associated Press 

Under preject 81-21-48 the following firms should be cont acted: 

Aerenautical, Inc. 

RCA 

AT&T 

Westem Unian 

Signal Cerps 

Navy 

Air Force 

2 
.... ------------------~~~~~~~~~~ ~ ----

REF ID:A66755 e 

In addition te radio equipment, infrared and visual light transmitting and 

receiving equipment should be investigated. 

Under project 81-22-48 the .f'ollowing items should be investigated: 

Telephones 

SWitchboards 

Repeaters 

Carrier equipment 

Open wire 

Field wire 

Field cable 

Ceaxial cable 

Wave guides 

Cable 

Lead covered 

Armered 

Submarine 

Rubber covered 

Loading coils 

Pads 

Attenuators 

Filters 

Hybrid CQilS 

Inf'ormation should be secured .from the following organizations: 

Westem UniCi>D 

AT&T 

Signal Corps 

Under project 81""'23-48 the following firms should be contacted: 

RCA 

Philco 

Signal· Corps 

Air Force 

Navy 

It is requested that each engineer discuss separately with me the information available and the method of attack en this problem. 

It will be necessary to devote at least one day out of each week toward 

the preparation of this plan. It is preferable that more ti.me be deveted but 

one dq each week is .mandater,y. The project reperts on ~ese projects must 

be prepared in detail. 

.3 
REF ID:A66755 

)}~r-tt,,.,~,,,~,? rf, ¥';4·' (!JA 

~y-· ~' -- · ~~ ·itJ. ;, ~fl~ ~ ¥'. 

' 

...... 

-··. . 

r 

.. . 

... '.· . 

. I 

' ....