Home |
Search |
Today's Posts |
|
#1
![]() |
|||
|
|||
![]()
On Wed, 16 Mar 2005 05:21:29 GMT, "
wrote: The original design is 50 years old. He infers that he has improved the design, specifically with respect to F/B He makes no such claim. |
#2
![]() |
|||
|
|||
![]()
On Wed, 16 Mar 2005 02:57:31 GMT, "
wrote: I don't operate on 40 M so I may be missing something but exactly what is it that stands out with this antenna that would make it desirable to hams? Efficiency would be reflected by the loads used which is not necessarily "state of the art". He then states "a large F/B is effected" but it doesn't show before and after overlaid plots ! Would hams have an interest in a two element 20 M antenna that have lower TOA than the norm, say 9 degrees instead of the normal 14 degrees? That last post got away from me too soon. Yes, I'd like a "TOA" of 9 degrees. Unfortunately, I don't have room for a 110' tower. Now what do I do? |
#3
![]() |
|||
|
|||
![]() "Wes Stewart" wrote in message ... On Wed, 16 Mar 2005 02:57:31 GMT, " wrote: snip That last post got away from me too soon. Yes, I'd like a "TOA" of 9 degrees. Unfortunately, I don't have room for a 110' tower. Now what do I do? Use a cell phone Art |
#4
![]() |
|||
|
|||
![]()
On Wed, 16 Mar 2005 02:57:31 GMT, "
wrote: I don't operate on 40 M so I may be missing something but exactly what is it that stands out with this antenna that would make it desirable to hams? From the title: "Two-Element Driven Array *With Improved Tuning and Matching* (emphasis added)" The major claim is that the antenna is more easily adjusted than the alternatives. This would seem to make it "desirable." Efficiency would be reflected by the loads used which is not necessarily "state of the art". What "loads"? He then states "a large F/B is effected" but it doesn't show before and after overlaid plots ! He doesn't claim "improved" F/B, only "comparable to that which is available from a three element Yagi of similar electromagnetic properties." So what before and after do you expect to see? Would hams have an interest in a two element 20 M antenna that have lower TOA than the norm, say 9 degrees instead of the normal 14 degrees? Yeah, I'm still interested in seeing how you can lower the "TOA" without changing the antenna height, or is that the "secret"? |
Reply |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
F/A New Motorola VHF portable antennas (Motorola Branded!!) | Swap | |||
please recommend any interesting links for hand made SWL antennas | Antenna | |||
Any interesting site on hamemade SWL antennas? | Shortwave | |||
Poor quality low + High TV channels? How much dB in Preamp? | Antenna | |||
Poor quality low + High TV channels? How much dB in Preamp? | Shortwave |