January 1997
Beginner
435 pages
18h 29m
English
Content preview from Microwave and Wireless Communications Technology
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380 UHF AND MICROWAVE RECEIVERS
When Harry Helms (author of All About Ham Radio and the Shortwave Lis-
tener's Guide) did comparisons of basic spur/noise levels on several high-quality
receivers, including tube models and modern synthesized models, his results were
surprising. A high-quality tube receiver from the 1960s appeared to have a lower
noise floor than the modern receivers. Helms attributed the difference to the inter-
nal spurii from the digital circuitry used in the modem receivers.
18-13 RECEIVER IMPROVEMENT STRATEGIES
There are several strategies that can improve the performance of a receiver. Some
of them are available ...
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