Fred-can you share details on this antenna? Not familiar with it. Thanks. Dan Presley 503-701-3871 danpresley@me. com n7...@arrl.net
> On Sep 29, 2022, at 12:08, Fred Jensen <k6dg...@gmail.com> wrote: > > I've long wondered why hams haven't done more with Franklin verticals? KFBK > [1530 kHz in Sacramento] uses one located in the southern end of the > Sacramento Valley, and it's known as a Flame Thrower. I think KNBC [680 > kHz?] in SF had one back in the 50's sometime too. They're big at MF, but > much more tractable at HF, and they are amenable to loading techniques. I > built one [fairly heavily loaded] out of Buddipole parts I had, and its > performance, particularly when I was still activating summits, was > surprising. Like a small loop, the Franklin pretty much ignores ground ... > although KFBK's probably likes being located in rice fields filled with > water. 😉 > > 73, > > Fred ["Skip"] K6DGW > Sparks NV DM09dn > Washoe County > > Jim Brown wrote on 9/29/2022 11:28 AM: >> David, >> >> I've published a LOT of work on concepts like this. >> >> This ran in National Contest Journal about six years ago. It's based on >> extensive modeling, and was peer reviewed. >> >> http://k9yc.com/AntennaPlanning.pdf >> >> This was added to the ARRL Handbook or Antenna Book several years ago. >> >> http://k9yc.com/VerticalDipole.pdf >> >> This is an application of the above technique. >> >> http://k9yc.com/80M-FDVertical.pdf >> >> N6BT (original Force 12) has done a lot designs for monoband and multiband >> verticals that are loaded dipoles. The multiband Cushcraft R-series and >> Hi-Gain AV-series multiband verticals (companies bought out by MFJ many >> years ago) are loaded dipoles. >> >> 73, Jim K9YC >> >>> On 9/29/2022 11:09 AM, David Gilbert wrote: >>> >>> You're talking about a horizontal pair of AX1's ... I asked about them >>> oriented vertically. That wouldn't require them to be as high above ground >>> as you mention and would still allow them to be carried pedestrian mobile. >> > > > > -- > This email has been checked for viruses by AVG antivirus software. > www.avg.com > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to n7...@arrl.net ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
