Hi Andy, 1) When you state that the Radiation Resistance of a loop antenna is proportional to the square of its Area, you are of course quoting the accepted formula, but you will remember that Prof.
Mal, I believe what is going wrong is that many guys fail to start out with good reference material and not 'going through the numbers' on paper. Secondly they don't reach a basic understanding or '
Mal, The only accurate way to measure loop inductance for an installation is to use an inductance meter. Calculations do not take into account the loop environment like trees and other objects in the
From Dave G3YMC I hope that is just an example. If you really have a transmitting loop with a series R of 5 ohms you are wasting your time. Mine has a dc resistance of around 0.1 ohms, and an effecti
TX loop enthusiasts. The main problem with transmitting loops is the enourmous current and Voltage which is generated when exciting them with decent power. It's all very well to put 1W into a loop b
I used a loop on the 73kHz band in the early days and had some interesting results. The currents were very high - several amps for the same power that delivered a few tens of mA into a same-sized ver
TX loop enthusiasts. The main problem with transmitting loops is the enourmous current and Voltage which is generated when exciting them with decent power. It's all very well to put 1W into a loop bu
Mal, I experimented with multiturn 50'x50' vertical TX loops on 185k a couple of years ago and remember the net gain in the far field signal was much less than anticipated. Turned out that the addit
That will be a very interesting antenna to hear about. I hope you can put it up real soon. I think someone over on this side used a small receive sized multi-turn loop for transmit with the 1w and ac
Mal, I experimented with multiturn 50'x50' vertical TX loops on 185k a couple of years ago and remember the net gain in the far field signal was much less than anticipated. Turned out that the additi
Dave S, Thank you for the words of support relative to my thoughts on how loop antennas can be the best match for ones back yard environment, and at times, the ONLY match. I hope that the 'jabbing' g
