Answering the challenge Here is the first test setup partially answering Rege's (AI3V) challenge of placing a small transmitting source at the end of an EFHW to see what happens. Rege wanted 80m and a far field measurement. This will be at the more manageable 30m and use a commercial magnetic field probe relaying measurements via WiFi to a distant computer. Likewise the ~150 mW transmitter is remotely controlled via WiFi. Both are battery powered and have no additional wiring to spoil the antenna isolation. I've confirmed all the gear works as designed, but not without some pain of bricking Raspberry Pi Zeros, etc. Here is the test setup... Important points include: I made two dipoles rather than morphing one to both purposes due to the different feed mechanisms. The center-fed 30m dipole is split with a strain relief and then attached to a Banana-BNC adapter for attachment to the R-Pi 30m transmitter module. The end-fed 30m dipole is one continuous wire with the same broadband LNR autotransformer from my dissection years ago. See picture here from this article about the LNR 40-20-10. A UHF to BNC adapter allows connection of the same R-Pi 30m transmitter module. The dipoles are suspended with non-conductive rope (or equiv.) atop non-conductive masts. The mag sensor will move in small increments measuring the magnetic field about one inch from the dipole wire. This distance between wire and mag loop sensor is fixed by the non-conductive hanging system I made. It's quite a sight. Pics soon. The ~150 mW of applied power, the probe spacing from the wire, and the sensor electronics produce useful numbers in the range I can digitize. With effort I could make this an absolute measurement, but for this A-B comparison, relative will have to do. Magnetic field being proportional to current, we will effectively map the current magnitude along the wire for each case. The center-fed dipole is made from copper wire, while the end-fed is nichrome wire. Just kidding... seeing if you are awake. Both are, of course, made from precisely the same copper wire. Both wires required trimming to obtain good SWR using a good ole MFJ meter hanging as free as I could get it in my initial tests. Both wound up the same length... no surprise. Both dipoles have no conductors anywhere near... except earth of course. The height and tautness will be kept as consistent as we can, but many data sets will hopefully average out any variations. This test is a long time coming. I've been careful about its planning, but welcome suggestions for improvement. Keep in mind I'm testing only one thing... how that ~150 mW turns into current magnitude differing only in source placement at center or end. Why not use a wraparound rf current meter? Weight mostly. The wireless sensor system can ride on an antenna element with ease and not droop it too much. Remote measurement also means I can test with the sensor well away with dipole elevated to great heights. Nothing wrong with rf current meters. I have the MFJ product. This is just less intrusive to the system and easier to read remotely. Predictions please It's time. If you believe the above approach can work, it's time to place your bets on the outcome of this test. Precision not required. Possible broad answers include: Both antennas have mag fields (and hence current, hence performance) within a couple dB of each other given the LNR transformer introduces at least a little bit of understandable loss to the system. The end-fed antenna fails to operate much like a 1/4 wave whip on an HT ruins performance. Something in between. I've already seen enough preliminary data to suggest #1, but will let the final data represent my opinion. A hint is buried in the setup bullet points above. This is just data folks. Let's please refrain from this thread devolving into jackassery as oft times happens here on the Zed. I'd really appreciate your help keeping a broad smile on the moderator's face.