Documents / FOIA release
The Roswell Report: Fact versus Fiction in the New Mexico Desert was published in 1995 by Headquarters United States Air Force. It was written in response to Representative Steven H. Schiff's request and a General Accounting Office audit, and it contains Col. Richard L. Weaver's report and 1st Lt. James McAndrew's synopsis, along with attachments, appendices and photographs. The report says researchers found no evidence of an extraterrestrial craft or crew. It concludes that the 1947 debris came from a Project MOGUL balloon train.
“Channel”20 pages
n. decreasing the coefficient of coupling between the prt.&rJ and secondary ot the IF transformers. B7 this reduction of bandwidth to )kc a 3 microvolt signal produced a lS.S DB signal to noi15e ratio, where at 16 kc bandwidth only 7 DB was obtained. In order to obtain accurate r<!product1on of ·the amplitude of the audio frequency the A,VC circuit was modified by adding a fixed bias to the AVC diode of the receiver • This flattened the character- istic of the AVC circnit and no change in amplitude or recorded audio signal was detected over a six hour flight using a constant imapl.itude audio signal from the tranamitter. The signal was tapped ott at the output of the second detector or the receiv.er and ted to a Brush BL 90S AC amplifier tor recording. . The recorder used was a Brush BL-202 dottble channel oscillograph. A. quarter wave vertical receiVing antennae was aaployed with a counter poise ground. The transmitting antennae was a vertical halt waYe dipole. In order to use the AM-1 tor transmission or information trom pressure and temperature sensors a relaxation oscillator circuit vas incorporated in the S1'8tem• (dotted section - Fig. 6). This oscillator used one halt ot one ot the 3-AS modulator tubes and produced a blocking rate approximately proportional to resistance ·ot the sensor instruments • This information could be superimposed on the reg-,lar modulated signal and two types of information could be transmitted simultaneousl7J one as • amplitude and· trequenc7 change of the basic signal, the other as a frequency or pulses superimposed on the basic signal. · The AM-1 has been Ulled in balloon control research 1iO trannit information on pressure, temperat1.tre and ballast requirements. It was also employed to give tpformation on Neutron intensities 1h another Air Force project(5). In order to obtain information on balloon position on a wind studT project the AM-1 was used as a beacon to be "homed in" on by the radio compass or aircratt(6). A system of diYersity reception was considered tor use with a dual channel AM-1 transmitter in order to increase reliabUity despite atmospbric noise. In the dual channel unit·a common modulator was connected to two separate cr,yatal oscillators and RF amplifiers. In preliminary ~sts two receiver and recording units were used. For short t"ange balloon fiights the AM-1 vas modified for use with subminiature and acom type tubes. In this, the AM-2, two 2E27 tubes in parallel provide excitation for the type 9S8A RF amplifier. A circuit diagram of this unit is .shown a" Fig. 7.
FOIA release, from the osd collection. The PDF is mirrored here; the original link is under it. 993 pages are in the text index: search them above, or from the library's search.