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K_8_b_y_p@IEEE.ORG
Balanced and unbalanced are about the amplifier circuits driving the antenna system, not the system itself.
Corection, full-wave @ 40m is 130 ft or so. 🙄
Balun and Unun = 💰 ⬇️ 🚽 BAL oney and UN necessary
Baluns are NOT FOR ANTENNAS. They are for connecting mismatched transmission lines together. Says PHd experts. See my videos on the topic.
Note the contradiction of using a BALUN which has FOUR WIRES to connect TWO TRANSMISSION LINES WITH FOUR WIRES - to the end of a wire with ONLY ONE WIRE..
Key word - "MISMATCHED"
Just as a 50 ohm line is mismatched when connected to 300 ohm twin lead, a dipole installed TOO HIGH is also badly mismatched..
Baluns are used ( improperly) as transformers to try to match a 50 ohm coax to an antenna thats not 50 ohms. In fact, the antenna could be so mismatched that no transmission line can match with it.
Instead of wasting money and making the antenna sag, GET RID OF THE WORTHLESS BALUN AND LOWER THE ANTENNA!
Find out WHY the antennas not working right and fix it. You wont be able to " get out" with these awful band conditions otherwise.
Radio Engineers Handbook does discuss balanced line ( twin lead) being balanced against Earth, BUT THATS HIGH POWER BROADCAST, not the pitiful low power Hams are allowed..*.not relevant here.*
Dipoles are balanced in the context of a transmission line being balanced meaning both wires have equal fields to ground, buy they DO NOT require a balun to feed them with unbalanced coax.
#ham #hamradio #antenna #arrl #hamantenna #dipole #swl #ieee #balun