Topband: [WARNING: A/V UNSCANNABLE]RE: Waller Flag Question

2015-09-07 Thread Arthur Delibert
Tom -- You asked for the source of the statement about a Waller flag needing 40 dB of preamplification. See http://www.kkn.net/dayton2011/N4ISWallerFlag.pdf at pages 6 and 7. -- Art, KB3FJO _ Topband Reflector Archives -

Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller Flag Question

2015-09-07 Thread Jim Brown
On Mon,9/7/2015 3:31 AM, Arthur Delibert wrote: You asked for the source of the statement about a Waller flag needing 40 dB of preamplification. See http://www.kkn.net/dayton2011/N4ISWallerFlag.pdf I saw that statement as well, which noted a gain of -53 dBi. My NEC model, using Carlos's

Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller Flag Question

2015-09-07 Thread Jim Brown
s all the difference in propagation and signal to noise ratio. JC N4IS -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jim Brown Sent: Monday, September 07, 2015 5:32 PM To:topband@contesting.com Subject: Re: Topband: [WARNING: A/V UNSCANNABLE]RE:

Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller Flag Question

2015-09-07 Thread JC
the difference in propagation and signal to noise ratio. JC N4IS -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Jim Brown Sent: Monday, September 07, 2015 5:32 PM To: topband@contesting.com Subject: Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller

Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller Flag Question

2015-09-07 Thread Jim Brown
On Mon,9/7/2015 1:05 PM, K1FZ-Bruce wrote: Thanks Jim, There are new hams that do not know how horizontal antennas patterns change over ground. Right. In general, horizontally polarized antennas only care about height, while vertically polarized antennas care SOME about height, but mostly

Re: Topband: [WARNING: A/V UNSCANNABLE]RE: Waller Flag Question

2015-09-07 Thread K1FZ-Bruce
Thanks Jim,  There are new hams that do not know how horizontal antennas patterns change over ground. On 160 meters, Usually, but nor always, higher is better up to 1/2 wavelength for low angle DX..   Lousy soil, like low conductivity sand, dry desert soil, can put the effective conducting