[1]KENNEDY ASSASSINATION RECORDS ACT OF 1992 |
[3]14-0000
[5]104-10179-10167 | 2025 RELEASE UNDER THE PRESIDENT JOHN F.
[7]CJ RETURNTOCIA . ° 6 Y
[9]B, ckground Use Only
[10]Do Not Reproduce / ,
[12]TSG/CAP MOMO £646
[13]3 January 1963 :
[15]MEMORANDUM FOR 3; Chief, Special Affairs Staff
[16]ATTENTION 3 Mr, A. Rodriquez
[18]SUBJECT 3 Radio Switch Equipment for Demolition
[19]Firing Purposes
[21]0 1, After our conversation on this subject on 30 December,
[22]the question was discussed with Mr. fay Alpern,)TSD/AOB, and
[23]Ms (Lee Poole,)TSD/QRF. The following information i¢ forwarded
[24]for your consideration ag a result of our discussions,
[26]7
[29]a 9 " Mr, ‘Mipeem) Audio Operations Branchs- recommends two
[30]companies as sources of equipment of this nature, These companies
[31]have experience, under classified contracts with TSD, in producing
[32]reliable equipment for special purposes of this sort. They also,
[33]of course turn out commercial equipment of good quality for normal
[35]communications needs, These Sompanics are:
[36]_ 29,0
[38]a.\Motorola, Chicago, Illinois »)
[41]bi Kell, Cambridge, Massachusetts
[43]1 ra . -
[44]The TSD VHF radio switth edifpmdnt for demolition needs was
[45]developed for us by(Mctorola, 'Kell-Com! }ransistorized sets have
[46]been produced to me6t the special needs (nét for demolition purposes)
[48]: of other SAS projects,
[50]3. In the opinion of both persons conaulted, the expenses noted
[51]in our first discussion should have produced a reasonable amount of
[53]workable equipment if the source was both capable and reliable. ~
[54]_JSD recommends the use of frequencies in the VHF/MHF spectrum for
[55]equipment of this sort and crystal tuning control for reasons of reliabifty,
[57]selectivity and rejection of spurious signals.
[59]Oe oe Ut Ratt soe
[61]ote ee tame se ome
[63]. 4. Inexpensive equipment of Japanese or American manufacture
[64]in the citizen’ band frequency ranges for toys, radio control devices, - el
[66]14-0000
[68]“Py
[70]. .
[72]RETURN TO CIA
[73]Background Use Only
[74]’ «Bo Not Reproduce
[76]Page Two
[78]short range communications, etc., is available from many
[79]manufacturers. Our Quick Reaction Facility can produce a
[81]emall number of radio switches based on these devicts witha
[82]considerably lesser degree of security from false signal triggering
[83]with a lead time of 6 to & Weeks, Simple mechanical protection
[84]against accidental triggering can be gained by inclusion of counting
[85]switches, for example, which require a preset number of firing
[86]impulses intentionally transmitted to produce the final closure of
[88]a relay and firing of a charge.
[90]5. Reliability of operation in terms of response toa
[91]transmitted signal of a given power is quite difficult to predict when
[92]conditions of antenna length, orientation and exposure cannot be
[93]foreseen. Location of the receiver.in a target building will also have
[94]a strong bearing on ‘range' from the transmitter, Building construction,
[95]intervening obstacles and interference from other nearby radio fre~
[96]quency sources will affect performance of the set.
[98]6 you wish to discuss the pro*'ema in greater depth,
[100]we recommend a conference with audio ‘echnicians or engineerr,
[102]It may serve to clarify the appropriate haracteristice which special or m
[103]modified commercial equipment shoule pogsesa to meet the needs of your
[104]operation, Putblems of camouflaging the explosive or incendiary material
[105]to serve operational requiretnents would be minor compared to the
[106]necessary consideration of effects on the receiver switch concealed
[107]within which could have important effects an performance, :
[109]C/TSD/CAB/SD
[110]. 03
[111]Distribution:
[112]2-C/SAS