SDRplay Community Forum

Dear VK3MHz, I am glad you wish to experiment antennas for lower frequency reception from far away. If you experiment with the Langford antenna, very easy and simple and cheap to make look up the post of SDRguy22 in this section we can get your results in reception and then make more perfection to c...

Dear SDRguy22 I read your interesting post on low noise vertical antennas and I have studied the important work of Dr. Langford. I am interested in lowest noise widebandest antennas and I am working with the capacitor theory for the wideband. Now the schematic of Dr. Langford cannot be capacitor as ...

Dear ON5HB, thank you for your reply, but I do not undesrtand. I am researching wide band antennas and the description for the miniwhip and all discussions I have read in the forum say we have here a wideband and also low noise antenna, like I am also researching, based on the work on capacitive pro...

What is capacitive sensor ? it is sensor that measure changes in capacitance between a sensor antenna and its surrounding. It has 3 mode Loading Mode, Transmit Mode, Shunt Mode. https://ichickii.wordpress.com/2014/02/17/capacitive-sensor-for-whole-body-interaction/ I didn't design a miniwhip, I've b...

Hi ON5NB I have seen your posts and wonder if you can help me with the special data of the capacitor smallest antenna described in this collection. I am also interested in no reflection measurement of antennas, as you are exposing, as I believe that for new small capacitor antennas very new special ...

I wanted to correct my post, but I am not able to do it, so I correct here as the names of the Scientist are : Dr. Zehforoosh Y. And Dr. Siahcheshm. Sorry for that. I also wish to exchange information with Mr. Mike2459 and hope he replies, as his smallest antenna he wrote data e.g. special old trans...

Dear Mike2459 I was very impressed from your sample reception with your smallest antenna and I am interested in your building details. It seems to me you wrote some info down in this articles collection, but now I do not find it, can you help me? Because I need to compare with my circuit before I ca...

I have been following this forum for some time because I am interested in noise and antenna noise reduction technical and have found many interesting articles here. Especially the miniwhip and the special low noise whip described here are very interesting because they give good performance in small ...