Hi low band lovers I'm happy as I was when I got my first 6V6 tube transmitter working at 15 years old. After almost 3 years working on dual Flag antennas I hit something big here. My BWF , Big Walle
K9YC: two ground rods). It would be interesting if someone could define "extremely high isolation impedance". :-) These questions are very important to understand the big picture. When we are thinkin
Hi Victor No much activity from South Pacific. However I would like to ask you for a sked on 160m. I developed some new receiver antennas and I would like to test it during summer time. I can stay up
Hi Rune I'm quite late on these comments; however I would like to recommend some reading on recent new phased arrays. Dr Dallas is working hard to improve his Quad Delta Flag, he is focus on maximum
Mike You did it right, the float part of the inverted L become 1/4 element, and it does not reradiate, before with the ground it was a resonant element. The noise reduction depends on the direction o
Glen I'm using a Unipole for almost 4 years; it is a very good antenna. The cage helps to detune the tower during RX, without that my RX antennas just don't work at all. The cage is grounded at the
station sending RA9 and then a three second carrier. Sunset is approaching and << Hi Bill That's a new one for me, those things are fishing buoys, they are all over the places making huge QRM on sev
Craig No, it's just a wrong reading due the BC energy for AM stations, ALL hand held antenna analyzer are inefficient on 160m and they show 0 ohms. Digital Vector RF wattmeter works because you can t
Larry Thank you very much for sharing years of experience with us. I get involved with RX antennas 5 years ago and I had relative success using a dual flag array I named Waller Flag in a city lot. I'
I did a mistake when I mentioned TOA for the 4 sq RX array, depending where you are due the quality of the soil the TOA should be from 14 to 20 degree Regards N4IS JoseCarlos ________________________
Hi Guy and fellows TopBand lovers It is much more them balanced feed lines. The Quad Delta Flag Array is a revolutionary RX antenna, high efficiency and easy to implement in a relative small real sta
Rick impedance at the transmitter. We have few available options. I am using the LP-100 for several years and I love it. To know the impedance at the antenna there are several programs to help with.
Are you kidding, check NX4D 1/3 acre and Doug is #249 on 160m using a rotatable flag I named it Waller Flag. Doug just upgrade his WF to a monster WF, 50ft x 24 ft and he can hear everything on the
significantly more noisy than others or not. To do so, it is handy to have the noise floor measured in dBm - something I can do with my SDR 5000a. The value is around -82 dBm in conditions which I w
point...<< John you are 100% right, the point is clear, most Dx expeditions is ignoring openings and best practices in return of high number of QSO's. It is an issue both way, east or west, and it i
Hi top-band lovers and friends George is sailing to Chesterfield to activate TX3A; the operation should be staring Monday. George wants to do the best possible on 160m. He asked me to collect propaga
Hi low band lovers. This is a long report. I would like to share with you my experiences using horizontal loops on low bands. Last year during the winter I struggle to copy signals from south Asia, 9
Hi folks I would like to share a pleased however unexpected expediency with power line noise on top band. Since last year the noise level in my suburban lot had increased and after the raining season
Rys Congratulaions for you new DHDL. We are using loss noise NORTON preamps (K8ZOA > http://www.cliftonlaboratories.com/norton_amplifier.htm) to bring the signal at confortable level. The NORTON's ar
Hi Eric Any wire close to 1/2 wave or a 1/4 grounded need to be detuned. The way to do it is to split them in 1/4 wave segments. Even two 1/4 wires grounded in one point become 1/2 if not properly gr