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"Jim Lux" wrote in message
... Ralph Mowery wrote: Why are you using a 4:1 balun with a dipole ? If it is a simple dipole with only one wire in each direction instead of a folded dipole the impedance is around 70 ohms. If you decide on a balun it should be a 1:1. When adjusted for the lowest swr you may find that 1.4 to 1 is about as low as it will go if you use a 50 ohm coax. "Pete" wrote in message ... I question my calculations for a inverted-V dipole length for 50150 and 28400 into a 4:1 balun. I think they came out too short for 200ohms center Z Can someone confirm my two calculations? Thank you! With a V, you can get the feedpoint impedance right to 50 ohms.. somewhere around 120 degrees included angle Dittos. Radiates equally poorly in all directions though A rotatable dipole or 2 el beam would be a simple project. |
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