Carl has nothing backwards, best do your research the next time.
----- Original Message ----- From: "W2XJ" <w...@nyc.rr.com> To: <topband@contesting.com> Sent: Sunday, May 06, 2012 7:40 PM Subject: Re: Topband: Monopole Radiation Patterns, takeoff angles etc >I think Carl may have his time line backwards. In the 20s and early 30s > many stations used various forms of wire antennae including dipoles and > various cage designs. During the 30s Dr Brown and colleagues studied and > tested various vertical radiators and ground systems. The result of that > work remains the underpinning of most MW radiators and a substantial > amount of it ultimately became part of FCC rules and standards in many > other parts of the world. Some stations continued with their wire > antenna into the 40s and some paid a penalty of having stations moved > into the natural nulls of a dipole. > > On 5/6/12 6:18 PM, Kevin wrote: >> WHO-AM (1040 KHz) still uses the modified Franklin. >> Their 50KW covers the entire state of Iowa + during the day and goes >> international at night. >> >> >> On 05/06/2012 11:31 AM, ZR wrote: >>> The BCB stations migrated from 1/2 and 5/8 wave antennas, diamond shaped >>> towers, and mountain tops by the early to mid 30's as they started to >>> understand how things worked...or didnt. >>> >>> Carl >>> KM1H >>> >> -- R. Kevin Stover AC0H >> _______________________________________________ >> UR RST IS ... ... ..9 QSB QSB - hw? BK >> > _______________________________________________ > UR RST IS ... ... ..9 QSB QSB - hw? BK > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1424 / Virus Database: 2411/4981 - Release Date: 05/06/12 > _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK