What does DX mean? - Elmers Forum at eHam.net

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eHam.net Forum : Elmers : What does DX mean?

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RE: What does DX mean?	Reply
by RobertKoernerExAE7G on January 24, 2006	Mail this to a friend!
The derivative of a function represents an infinitesimal change in the function with respect to whatever parameters it may have. The "simple" derivative of a function f with respect to x is denoted either f^'(x) or (df)/(dx) Also dy/dx

RE: What does DX mean?	Reply
by KA2JIZ on January 24, 2006	Mail this to a friend!
I do know that when a west european station calls cq dx on any hf band, that op does not want a contact with another euro station. I have been advised by euro amateurs on that point.

RE: What does DX mean?	Reply
by NJ1K on January 24, 2006	Mail this to a friend!
According to a trivia question on another ham radio website, DX originally was a slang term coined by telephone operators that meant "Distant Exchange" (calls routed from a long distance exchange). The term was later picked up by ham operators to mean QSO's with stations from long distances away. It means different things to different operators. For some, it means only from different countries. To others it means QSO's using only sky wave propagation and yet to others it means QSO's using anything but direct wave propgagtion...

RE: What does DX mean?	Reply
by K7UNZ on January 24, 2006	Mail this to a friend!
DX means different things to different people, and at different times in history. But you have the correct idea! In the early days of radio, DX simply ment distance. Based on the radios of the day, it could be anything from 50 miles to whatever. Whatever was pretty hard to come by in the spark days. Radios have evolved, antennas have gotten better, new modes have replaced old ones, and to most people these days, DX means foreign contacts. However, not all foreign contacts are the same. Sitting in the middle of Europe, working other European countries is not really DX'ing on HF, but jump up to VHF/UHF and you may have something. To a HF QRP guy in California, Germany might be DX. To a QRO guy in New York it's routine on HF. DX is a relative term, meaning different things to different people. Working EME, you may only get some guy a couple of states over, but it sure took some distance to get 'em! As for the "X" it's just CW shorthand. Used to be rcvr and xmtr....now it's RX and TX, with xcvr meaning transceiver to most people. Xmas by itself doesn't mean anything, but we all know it's short for Christmas. Evolution, even in radio.....hi! 73, have fun! Jim/k7unz

RE: What does DX mean?	Reply
by THERAGE on January 24, 2006	Mail this to a friend!
Simply put distance. Or Delta X-ray

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