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Silent Key callsign harvesting
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K7AQ (since 1987)
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Maidenhead grid

FN20ka

53 active licensees across 27 ZIP codes centered in this square. Each dot is a ZIP code, sized by licensee count.

ZIP codes

ZIPCityHams
19140Philadelphia, PA18
19124Philadelphia, PA17
19120Philadelphia, PA10
19101Philadelphia, PA5
19141Philadelphia, PA3
19019Philadelphia, PA0
19092Philadelphia, PA0
19093Philadelphia, PA0
19155Philadelphia, PA0
19160Philadelphia, PA0
19161Philadelphia, PA0
19162Philadelphia, PA0
19170Philadelphia, PA0
19177Philadelphia, PA0
19178Philadelphia, PA0
19179Philadelphia, PA0
19181Philadelphia, PA0
19182Philadelphia, PA0
19184Philadelphia, PA0
19185Philadelphia, PA0
19188Philadelphia, PA0
19193Philadelphia, PA0
19194Philadelphia, PA0
19196Philadelphia, PA0
19197Philadelphia, PA0
19244Philadelphia, PA0
19255Philadelphia, PA0