Hi to all. I see that many questions are on the LF reflector about antennas on low bands, modeling and concerning the lobe formation zones (Fresnel, Fraunhofer and Rayleigh). On the way, that explain
Sorry, one precision : the URL not show the Labus and Siegel publications but compilations especially from A. Schelkunoff that include most of their contributions, many years ago... Andy F6CNI. From:
has anyone tried a DDRR antenna on LF there is info on them in one of the arrl antenna books and I use one on 144 very small but appears to work as well as a 5/8 wave appears as a small horziontal lo
Am 29.05.2015 um 18:30 schrieb [email protected]: has anyone tried a DDRR antenna on LF there is info on them in one of the arrl antenna books and I use one on 144 very small but appears to work a
Hi Bob, small is a relative thing on LF. A DDRR with a perimeter of 0.25 lambda and a height of 0.025 lamdba is indeed small on 144MHz, but on 137kHz the perimeter becomes 550m and the height a respe
Am 29.05.2015 um 21:59 schrieb Rik Strobbe: Hi Bob, small is a relative thing on LF. A DDRR with a perimeter of 0.25 lambda and a height of 0.025 lamdba is indeed small on 144MHz, but on 137kHz the
was thinking 600 meters,,, the info for 160 meters looks backyard ish Bob K3DJC On Fri, 29 May 2015 19:59:23 +0000 Rik Strobbe <[email protected]> writes: Hi Bob, small is a relative thing
Hi Tom, Bob, I had a look in my Rothammel Antennenbuch (geniune "Militärverlag der Deutschen Demokratischen Republik" version, 1974) and indeed it states 0.007 lambda height. But what about ground lo
On Fri, 29 May 2015 19:59:23 +0000 Rik Strobbe <[email protected]> writes: Hi Bob, small is a relative thing on LF. A DDRR with a perimeter of 0.25 lambda and a height of 0.025 lamdba is in
