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The effective and intelligent administration of television broadcast channel allocations requires acceptably accurate estimates of field strengths which will be produced by television broadcast stations. Propagation curves and prediction methods in use at the time of the founding of TASO were in many respects inadequate. Insufficient data were available for the preparation of new propagation curves; a new standard measuring specification was prepared, and an extensive program of field strength measurements was undertaken. This paper discusses the details of the TASO field strength measuring specification and describes the program of field strength measurements. A summary of the results of the measurements is presented.

This paper examines the techniques now current and estimates the possibilities of accomplishing the production of truly electronic motion pictures of sufficient technical quality to reproject into the television broadcast channels.

In this, the first part of a two-part paper, we establish a theorem concerning the entropy of a certain sequence of binary random variables. In the sequel we will apply this result to the solution of three problems in multi-user communication, two of which have been open for some time. Specifically we show the following. Let X and Y be binary random n -vectors, which are the input and output, respectively, of a binary symmetric channel with "crossover" probability p_0 . Let H\{X\} and H\{ Y\} be the entropies of X and Y , respectively. Then \begin{equation} \begin{split} \frac{1}{n} H\{X\} \geq h(\alpha_0), \qquad 0 \leq \alpha_0 &\leq 1, \Rightarrow \\ \qquad \qquad \&\qquad \frac{1}{n}H\{Y\} \geq h(\alpha_0(1 - p_0) + (1 - \alpha_0)p_0) \end{split} \end{equation} where h(\lambda) = -\lambda \log \lambda - (1 - \lambda) \log(l - \lambda), 0 \leq \lambda \leq 1 .