Re: Topband: Bowtie Flags

Sorry, the invention was in 1938 and the patent issued 1941 -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of JC Sent: Tuesday, December 13, 2016 6:28 PM To: 'Don Kirk' ; 'Mark Connelly' Cc: 'topband'

Re: Topband: Bowtie Flags

Hi Mark Terminated loops are very old, the first patent belongs to Harold Beverage Harold Beverage invented wide band receiver antenna, loaded loop in 1941 https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/ US2247743.pdf Most variations of this kind of antennas like

Re: Topband: Bowtie Flags

Mark’s observation feeds my skepticism of a bowtie vs a flag in the specific circumstance where a ground independent RX antenna is your only option. A bowtie would be about half the capture area of an equivalent “box” flag and consequently at a immediate disadvantage. If I was going to replace

Topband: Bowtie Flags

    Earl, K6SE (sk)  advanced loop antennas on 160 meters. For information-See Page 34, July 2000 QST magazine. The small 160 meter bandwidth allows loop optimization k6SE gives dimensions.   George Walter AA7JV  helped the TX3A Chesterfield DXpedition group with interconnected  two half

Re: Topband: Bowtie Flags

Hi Mark, I had no idea a terminated bowtie previously existed, but does not surprise me. Thanks for posting. Don On Tue, Dec 13, 2016 at 2:00 PM, Mark Connelly via Topband < topband@contesting.com> wrote: > As Nick undoubtedly knows, Bowtie antennas have been in use by medium wave > broadcast

Re: Topband: Twist a Flag into a Bowtie?

Hi Nick I would say grounded both ends, don't need to be connected to the antenna itself, right. JC -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Nick Hall-Patch Sent: Tuesday, December 13, 2016 11:42 AM To: JC Cc: 'topband'

Re: Topband: Twist a Flag into a Bowtie?

So, is the ground wire just left "floating", JC?No electrical connection to the antenna itself? Thanks and 73, Nick VE7DXR At 11:23 13-12-16, JC wrote: Hi Nick The wire will reduce loss on the transmission line given a better match and phase. In practice you can see change on the SWR

Re: Topband: Twist a Flag into a Bowtie?

Hi Nick The wire will reduce loss on the transmission line given a better match and phase. In practice you can see change on the SWR and front back. If you have a good ground you probably won't see anything changing. Regards JC -Original Message- From: Nick Hall-Patch