JJqAMC Form No. 10-513 (Rev. 3 Aug 45) 
IN REPLY ADDRESS BOTH 
COMMUNICATION AND EN¬ 
VELOPE TO ATTENTION OF 
FOLLOWING OFFICE SYMBOL: 
HEADQUARTERS 
AIR MATERIEL COMMAND 
* 
BG/JSH/ra 
WRIGHT FIELD, DAYTON, OHIO 
TSEAP 
3 December 19U6 
Smithsonian Institution 
Washington, D. C. 
I A. Wtz i Muh'c j 
i DEC -6 1946 
i—__ 
/ 
Attn: Dr. A. Wetmore, Secretary 
Dear Dr. Wetmore: 
\ 
Your letter of 19 November 19U6 has been received by the Personal 
Equipment Laboratory. , 
Investigation regarding your request for a Handy-Talky has not 
proved encouraging. The small pocket-sized set to which you referred is 
a preliminary experimental model and is not available at this time. 
Engineers of the Communications and Navigation Laboratory have 
advised that all types of Handy-Talkies are limited to "line of sight" 
operations which greatly reduces their effective operating range in 
rough terrain or hea-vy foliage to a distance of a few hundred feet to a 
few hundred yards. It is therefore believed that Handy-Talkies will not 
serve your needs. 
However, if you are still interested in the Handy-Talkies that 
are available, the Laboratory will be glad to assist you. The set used by 
the infantry during the war weighs approximately eight pounds and has the 
same "line of sight" limitations as trie smaller set. The Navy has developed 
a. set that weighs approximately three pounds. This set is also subject to 
"line of sight" restrictions. Please advise this Laboratory is you wish 
either of these heavier sets. 
May I take this opportunity to again express sincere thanks for 
the splendid cooperation you and the Explorer's Club extended to me and the 
representatives of this Laboratory during the recent New York Meeting. The 
benefits of that association to both organizations are already much in evi¬ 
dence. 
s Very tnfty yours, 
MILLARD L. HASKCN 
Colonel, Air Corps 
Chief, Personal Equipment Laboratory 
Engineering Division 
WF-L-26 APR 46 200M 
