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我是根据 陈夏生 陈景峰两位前辈编著的《业余无线电通信技术》一书中提到59信号的强度是50μv的标准进行换算的。
电台的s表都不十分准确,参考作用,建议您别去动它了
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以下文字引用自arrl对于某dx声称的“历史上指标最牛x的电台”的评测报告。
原来s9=50μv是早期collins的接收机的标准。
s-meter sensitivity test description: the purpose of the s-meter test is to determine the level of rf input signal required to produce an s9 indication on the receiver s meter. this test is performed with the receiver in the cw mode at a frequency of 14.200 mhz. a traditional s9 signal is a level of 50 µv (an old collins receiver standard).
test results:
frequency preamplifier s units µv notes
14.2 mhz off s9 135 main receiver
14.2 mhz on s9 33.5 main rx
1.02 mhz n/a max ind. 6.46 sub receiver
