The on-line materials about Waller Flags says that a modest size WF would need
about 40 dB of gain to boost the signal to a usable level. One of the postings
says that cascading two preamps of 20 dB each seems to add extra noise, and
they talk about developmental work being done on a single preamp of 40 dB.
Is there now such a 40 dB preamp? Is it made commercially? Alternatively, are
there plans on-line somewhere? Has someone actually used it in a high-RF
urban/suburban area, with multiple 50 kW AM BC stations? With what results?
Many thanks.
Art Delibert
KB3FJO
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