I see that m2 offers a optional 4 els for 20m to add onto their 40M boom. This is for their 40m4llDD yagi..which is their 4 el 40m yagi, with dual DE..and on a 42 boom. Is this option something new ?
We built a stack of similar duo banders 50m and 27m high at DR1D. 4 elements on 20 and 4 elements dual driven on 40m. Works extremely well, antennas are Optibeam OB4020 with 49 feet boom length. http
I see that m2 offers a optional 4 els for 20m to add onto their 40M boom. This is for their 40m4llDD yagi..which is their 4 el 40m yagi, with dual DE..and on a 42? boom. Is this option something new
I talked with Mike about a year ago and he said they were coming out with a coil design for the 40 meter beam and make it a option that you can change from linear loaded element to a coil design..the
I'm one of those guys up north. Ice and/or wet snow on the linear loading is a disaster; it will move the SWR at the "fair weather" minimum SWR point far enough in either direction to activate the Al
I have a coil version being built right now to upgrade a new 40m4lldd that has not been installed yet. We have high winds where I live and mike and team has done a great job in this design. Bandwidth
Also....you can see a copy of the coil version on the K6MYC qrz page..... Rich _______________________________________________ _______________________________________________ TowerTalk mailing list T
That is great news, assuming that they are high Q loading coils. This design could give OptiBeam some serious competition. John KK9A I see that m2 offers a optional 4 els for 20m to add onto their 40
Any efficient shortened 2el 40m beam will have over 2:1 SWR some place in the band. Thankfully there are amplifiers that load fine into higher SWR. John KK9A I'm one of those guys up north. Ice and/o
Hello John The most efficient shortened two element 40 meter Yagi I am aware of (the W6NL Moxon) has a VSWR of less than 1.25:1 across all 300 KHz of 40 meters. http://www.k3lr.com/engineering/moxon/
I forgot about the Moxon design! Hello John The most efficient shortened two element 40 meter Yagi I am aware of (the W6NL Moxon) has a VSWR of less than 1.25:1 across all 300 KHz of 40 meters. http:
F12 just went to a new coil design on the delta series. I just took delivery of a 240/230 which has 2 elements on 40 and 2 elements on 40 with the new coils. The new design is stouter than the origin
Perhaps you misread my comment, John. In the summer, the minimum SWR point of my 40M2LL is 7.050 MHz. In the winter, minimum SWR may be down around 6.950, depending on the specifics of the ice and sn