Antenna Compendium Volume 1 by American Radio Relay League

By American Radio Relay League

The most advantageous quantity in ARRL's well known Antenna Compendium sequence contains articles on a multiband transportable, quads and loops, baluns, the Smith Chart, and extra.

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If the digital system skipped a pulse, then the subsequent Signal became identified as Reference, and vice versa. The result was that a CO spectrum formed in the usual way by the standard (SignalReference)/Reference instead became (Reference-Signal)/Signal. The resulting spectrum would grow when the count was correct but then diminish after the computer lost the identification of the Signal and Reference spectra. Unfortunately, the system lost count often. Second, something was generating a pseudo-random series of digital pulses that moved through the system.

The Computer Control Company in Massachusetts had developed this computer but the company was purchased by the Honeywell Corporation. According to Johann Schraml [22], a German astronomer working in Green Bank at the time, Wally Weller—an astronomer—wrote the first control program, which was so complicated that it could not even perform the 20 CHAPTER 2. 6: A view of the back structure of the 36-ft telescope in 1967. The slit of the dome is closed. The top of the steel tower beneath the yoke shows a section of the azimuth torque motor incorporated into the telescope mount.

By agreement worked out between observatory directors Nick Mayall and Dave Heeschen and ratified by the boards of AURA and AUI [15], the KPNO mountain staff would be available for major repairs when needed and when available, on a charge-back cost basis. ) of supporting the NRAO telescope— approximately the salary of an experienced engineer, a significant sum in the mid-1960s. To accommodate visitors, the NRAO transferred money to KPNO to pay for two rooms in a new dormitory (there were others) being constructed on the summit.

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