HERO SUPPORTING STUDIES
Abstract
Two low band-pass transformers (LBT's) were found to have more than 40 db loss at 30 and 250 Mc, when terminated in one ohm. Data show that this loss can be reduced to as little as 15 db if the continuity of the shield from input to output is broken. Temperature rise did not exceed 85 C with 10 watts for one unit, and 125 C with 12 watts for the other. Repeated tests to confirm the validity of the voltage min-max measurement method are again positive, but the presence of an unaccountable loss adds some confusion. It is conjectured that the power level measured at various points in the system should show a gradual, almost linear, decrease from system input to termination. Data obtained in dicates a severe reduction in power level at the front end of the system, but decreasing as expected from thereon. A modification of the basic technique required to offset interference present during these tests does not appear accountable.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1963
- Accession Number
- AD0407293
Entities
People
- Norman P. Faunce
- Paul F. Mohrbach
Organizations
- Franklin Institute