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![]() Roy, you surprise me. Try a jug of Moonshine. Placing the SWR meter at the start of the feed-line terminated by the antenna, will tell you NOTHING about the SWR on that line. It is the antenna input impedance which determines the SWR on the line, and the meter doesn't have the foggiest idea what THAT is. The unknown antenna impedance is at the other end of a line of unknown length, unknown impedance and unknown loss. Unknown, that is, to the meter. YOU might have that knowledge. But then you can CALCULATE what the SWR is on the line. Meter readings having been discarded as useless. I repeat - the meter tells you only whether or not the transmitter is loaded with a resistive 50 ohms. No more and no less. If it is not 50 ohms the ambiguous meter will not even tell you the actual value of Z. Intoxicated or not, if you insist on a meter reading, there is no alternative to climbing the antenna mast. ---- Reg, G4FGQ. PS. The use of SWR by American plug and socket manufacturers to describe unrelated characteristics of their products is a small indication of the abysmal depths to which engineering has descended. Technical specifications are reduced to Camm's Comics. But they look good to the uninitiated. ---- Reg. ========================================== |
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