DISCUSSION WITH <SANITIZED>, 9 MAY 1974, <SANITIZED> CALIFORNIA

• Document Type: SPECIALCOLLECTION
• Collection: Animal Partners
• Document Number (FOIA) /ESDN (CREST): 06638336
• Release Decision: RIPPUB
• Original Classification: U
• Document Page Count: 6
• Document Creation Date: September 6, 2019
• Document Release Date: September 12, 2019
• Publication Date: May 20, 1974

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ORD-2144-74
20 May 1974
MEMORANDUM FOR THE RECORD
SUBJECT: Discussion with
California
, 9 May 1974,
3.3(h)(2)
6.2(d)
1. was taken to the sponsor'
office, ana a review was made of TKH photography of
and the photos of the model of the Square Pair radar.
2. After a detailed study of the photography and the
the following approach
First, build the small antenna
elements in full scale (4' x 4 1/2') and
the birds to it. Then, move this antenna
Subsequently, build a crude mock-up of
the radar on top of a van to train the
in final picture taking.
sketches sent there by
was suggested by
with the five helical
reinforce training of
from place to place.
the other elements of
birds for orientation
4 flashing beacon was purchased in
will verify its effect on the birds. Ii there are
and
no ill effects (spoofing, etc.), then OTD will attempt to reduce
the 6.3-ounce package to about 2 ounces ($z: 56 grams), mainly
by a reduction in the weight of the batteries used to power
the flasher. A brochure describing this flasher is attached.
is addressing this problem. and I
am scheduling a meeting on 21 May 1974 with
and his staff.
4. The radar beacon was investigated and is available
and compatible with the Decca Super 101 Radar on board our
SOG boat in California; however, there are some minor problems.
The radar beacon itself costs $750 to $1,000, and an HP receiver
package compatible with the radar costs $2,500 (90-day delivery
from time of order). is gathering engineering
field test results and I will get this on 24 May 1974. The
E2 IMPDET
CL BY
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64-
SUBJECT: Discussion with
9 May 1974
Lalitornia
�transponder receives at "X" band and transmits back at HF or
VHF frequencies. At the present time, the boat's Decca Super
101 Radar antenna is being repaired after being damaged in a
windstorm (repair time is five weeks from 8 May 1974). This
unit should be checked out with our radar and would be a
worthwhile backup to the flashing beacon. As an additional
backup to this Ocean Applied Research (OAR) unit,
submitted a quote for the development ot
a similar beacon, and the development costs would be about
$12,500 with a three-month delivery time. This quote is
included for completeness; however, the OAR units are available
and possibly a unit could be borrowed frou of
the Navy undersea group in San Diego for test and evaluation.
When this becomes available, an SOG man and I should check
this unit out.
5.' While determining the status of bird training, the
subject of motor-sailer type boats was discussed. I told
of my concern about the size or color of the jib
sail and asked whether or not the birds might be spoofed by
it. explained that the birds .could adjust to
it quite easily, but it would be worthwhile training them to
it early as they would have to be retrained to land on a boat
with sails. Since we will eventually be using sailboats, we
should make provisions for gettir_rats with the same color
jib for all boats used. I asked to generate a list of
questions he would like answers to during the rehearsal cruise.
and I will generate a list of questions for the SOG
people to answer during the rehearsal phase as well as the
log format desired by us.
Attachment:
A/S
Operations Technology, ORD,
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_
. . � ititJ
/. r: transponder tracking .system developed.
coAract with 'U.S. Navy in 1972) �
ystem Description .
The function of the system is to mark a flying animal: t
n such a way that its range and bearing can be determined.::.
system block diagram is shown in Figure 1. ,The System-
onsists of an X hand radar set of. standard *design which
s used to interrogate the remote package and to display'
he.range and bearing, and a remote.transponder capable of
..eceiving the ,radar's interroqation.and.responding.. In
this specific system the response to the radar's interro-
Ation is.a short pulse of radio frequency not in the radar.:
)and (9350 MHz) but in the H. F. band. Tests for Phase I
:ere run with a response.at 31 MHz, the .center frequency of
:he radar's intermediate frequency .amplifier. In operation:
a 31 MHz receiving antenna is connected; to the input of .the�
:adar I.F. amplifier so that the return pulse is displayed..
in the same manner that the normal radar return would be:
3ince'the normal radar-receiver is:disconnected, the nOrmal
radar return is not displayed.leavingthe.screen.blank:ex-
,:ept for the transponder''s.signal.
Transponder Design
A block diagram of the tran'4onder is shown in Figure
2. It consists of An X band monopole antenna, 'a stripline
matching network, a video preamplifier,. a triggered pulse
gneerator, and an UJA.P. 2-stage transmitter; skematic.of
the transponder is shown in Figure .3 The battery stack.'
supplies 3 volts for the 'video amplifier and 9, volts for.
the transmitter. I:
Radar. Modifications-.
The radar ultimately furnished for, this program is a
Xarr Voyageur Marine Model LN55. Mounts for the radar com-
ponents were ,fabricated into one module So. that the unit
may be moved easily, by two men. Electrical modification ,
included analysis' of the IF amplifier and disconnection 'from
the X Band mixer; design of a matching network and b4nd.pass �,
filter to connect'a 150 MHz,.1/2,wave whip antenna.-:. -
�
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DISTRESS MlER LIGHT (STROBE) [ �
DESCRIPTION
The Save Ur' Lirr is a compact, self contained pocket
sized, high intensity strobe flasher that is designed for
the search and rescue of individuals who are lost on
land or sea. It was designed to meet the very rigid
test requirements of the Department of Defense and
is mandatory equipment for all fliers.
It provides very brilliant flashes of strobe light, fifty
times per minute, of approximately 500,000 peak
intensity candlepower and can be �seen for great
distances.
It is waterproof (operates submerged) � It is shock
and vibration proof � It operates at both very low
and high temperatures and has a special mercury
battery that will provide up to 12 hours of continuous
flashing.
The .case is molded Of high impact, bright, orange
plastic Mild the reflectorized xenon lamp flashes
through a clear plastic lens, giving wide angle visibility.
The �batfery-sCrews into the case for easy replatement.
It comes equipped with a woven loop to permit its
being attached to a belt or other parts of clothing or
a military type of carrying pouch is available at slight
extra cost.
SAVE UR' LIF'R
Distress Marker Light
Model SDU � 5/E
ENGINEERING DATA
LIGHT INTENSITY (CANDELAS)
DIMENSIONS (INCHES)
Light, Peak Intensity 500,000
Flashes Per Minute 50
Lamp . Xenon
Battery, Sealed Mercury
-- --
Voltage t. 5.2 volts
---... ..
Hours, Flashing 10
A
B
21/2
41/2
Materials:
Case Orange Cycolac Plastic
Weight: 6-a
w/Battery.7/J oz.
2 \\Z3S)
SPECIALIST IN LIGHTING and COMMUNICATIONS
talc S
NEO-FLASHER ELECTRONICS INC. 11975 SHERMAN RD., NO. HOLLYWOOD, CA. 91605
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May 3, 1974
U.S. Government
Washington, D.C.
Gentlemen:
The following information is submitted
X-band transponder-which will meet the
Input Frequency Range.. .
Input Trigger Sensitivity
Input Pulsewidth
Input PRF
Output Frequency (Fixed)
Output
Output Pulse Code
Output Pulse Peak Powei
Output Frequency Stability
DC Input Power
Input & Output RF Connectors
DC Supply
Size
for the development of a miniature
following characteristics.
9.415 to 9.475 GHz .
-40 dbm � - -
.5 psec nominal
.1500 pulses per second
150 MHz
A pulse pair for every
input trigger pulse .
A 2 psec pulse followed
by a 1 psec pulse separated
by a 2 psec -off period
100 mw +3 db
+
-go ma average max from. a 5V.
battery, battery end life
4V.. DC
3 mm Female OSSM
Solder pins
Jx1x3 inches excluding
connectors
Prototype cost is $12,500 and delivery is to be three months ARO.
Ou'i�st
We-have reviewed the proposed power budget and the results of our review
are as follows:
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U.S. Government
May 3, 1974
Page -2-
Assuming a transmitter power of 3-KW (4-64 dbm) for the X-band transmitter
and 24 db. transmitter antenna gain, a 136 db path loss, and a 0 db receiver
antenna gain, we note that At best we have -48 dbm left at the receiver
terminal. Further assuming that the receiver will be designed around a
biased hot carrier detector, we can only depend on a -52 dbm tangential sen-
sitivity for the detector. AlloWing a 2 db preselector loss and a 10 db
signal to noise ratio being necessary for reliable operation, the calculated
. minimum input level required is -40 dbm. This gives us a discrepancy of
8 db which either- has to be accounted for by obtaining an equivalent antenna
gain for the transponder receiver or will result in the reduction of the
operating range from.10 miles to 4 miles.
We have additionally examined the adequacy of the 100 mw peak output power
at 150 MHz and .concur that any reasonable superhet receiver and reasonable
antenna should be adequate.
Should we be able to provide you with any additional information, please
do not hesitate to contact us.
Sincerely,
vice Fresiaent
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