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14-Q0000 104-10179-10167 2025 RELEASE UNDER THE PRESIDENT JOHN F_ KENNEDY ASSASSINATION RECORDS ACT OF 1992
return TO CiA
Zackground Use Only
Do Not Reproduce
3
TSD{C:E ALMc #6&L
3 January 1963
MEMORANDUM FOR Ghief, Special Aflairo StaIf
ATTENTION Mr . A, Rodrlques
SUBJECT Radio Switch Equipment for Demolitlon
Firing Purpoees
03 1, After our converbation On
Qla subject o 30 December ,
thc queetfon wa? discuescd with (ay Alpern) TSDIAOB, and
Mr_ Le PooleJTSD/QRF. Tbe Iollowing information i( forwa rded
for con8ideration a 4 rebult Of our diecugsiono.
03
2, Mr-(Alpern)) Audio Operationa Branchr-recammende two
companie& a8 sowrct8 of cquipnient Of thie pature. Thcbe companiee
bave expefience, under clabeified contracts with TSD, in producing
reltable equipment for 8pecial purposee Of thia borta al80,
0f couree turn aut commercial equipment 0f &ood quality for normal
communIcatione needo. Thcee are: "2Gganiee
4 (Motorola, Chicago, Illinolo
b(Kel, Cambridge, Maobachusetta 24,08
Tbe TSD VHF radio switch
eGlpaent
for dcmolitioa pccde wa0
developed {or u8 byMMctorola. "KeM-Com' raneistorited eto have
beea produced to m86t the apecial peeda (not Ior demolition purpoeee)
of other SAS projectoa
J, L to opinlon 0f both Perbona condulted, tho expenees poted
Ln our MIrot discueaion bhould bave produced 1 reasonable amoudt 0{
workable equipmacnt i( tho sourco wa8 borh capable and reLablo.
TSD recommcnds tao 080 o[ [rcquencleo La thc WHF/VHF epectrum [Or
oqulpment 0f this srt and crystal tuning control Ior readon: 0f reliabEty
selectlvlty and rejecticn 0f spurioua tignalo.
4. Inexpentive equpment 0I Japanede or Amerlcan manulacture
Ip tha cltleenb bund frequepcy rangee {or toyt. radio contro} devlcet,
Jn-64
Mr,
Your
They
6lp
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14-000QQ
ReTurN TO CIA
Background Use Only
Do Not Reproduce Pare Two
short range communication8, etco, I8 available Irom many
manuacturero. Our Quick Reaction Facility can produce a
emall number of radio switchee baged Op tbeee devicze with a
canbiderably leaeer degree,%f security from falee 8ignal triggering
with a lead time of 6 to & weekb . Simple mechanlcal protection
againat accidental triggering can be gained by inclueion 0f counting
ewitcheb, for cxample which reqire a preeet number 0f {iring
Impulsee Intentiqally trangmitted to produce the {inal closure 0
8 and {iring O a charge.
5. Reliability o operation in terme O[ reeponee to &
tranemltted 8ignal 0f a given power i8 quite difficult t0 predict when
conditlone of antenna length, orientation and expobure cannot be
{orcseena Location O the receiver ,in a target building will also have
8 strong bearing On 'range' from the tranemitter. Bullding construction,
Intervening obataclee and interfcrence from other pearby radio Ire-
quency Bourcee will affect perIormance of the beto
6. L you wieh to diecube the protlem8 in greater depth,
wc rocommend a canference with audio 'echniciane or engtneera.
I may Berve to clarify thc appropriate ,haracterIetic8 which epecial or m
modilled commercial equipment ehoulc poeeeea to meet the neede o your
operation . Pmblems 0f camouflaging the exploeive or Incendiary malerial
to Berve operational requiremente would be minor compared to the
necegaary conbideration of 'effecte on the recelver switch concealed
within whlch could have important effeclo on Performance.
6022h
AUSTIN M. JONES
C(TSDICAB(SD
03
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