be,and that the cheapest, quickest way to a better signal is to go >QRO (no flames please!) Well now . . . 'taint 'zactly so . . . You need to experience what happens when you put a really LOUD QRO
Greetings, TowerTalkians -- Recently I posted the following information: TH7 typical gain (** is really TH11 **) 20M 2.5 dBd 15M 2.5 10M 3.0 C-3 typical gain 20M 3 dBd 15M 4 10M 3 >> The TH7 data was
Now let's see if I understand this -- we haul 75 pounds of aluminum up to the top of your tower, for 3-4 dB gain over a dipole at the same height. Or you stack two of the things, with rotors and othe
<< Actually, what it really demonstrates is how important a dB or 2 can be, and that the cheapest, quickest way to a better signal is to go QRO (no flames please!) There is an axiom in ham radio that
What it really, REALLY, demonstrates is that practical dbs are considerably bigger than theoretical dbs. Or, put another way, dbs in the air are better than they are on paper. Love them dbs! 73, -- K
No, hams are not crazy. Stacking antennas at HF is really done not to get the 2 or so db of stacking gain it is to get a better take off angle pattern - it is this change in pattern that accounts fo
The only problem with that is you are not gonna get a 2 db increase in receive strength with an amplifier. You get 2 db on transmit and 2 db on receive. Tom W7WHY -- FAQ on WWW: http://www.contesting
If all someone needs is a better take-off angle, that is, lower, then a stack is detrimental, since the antenna pair actually raise the TO angle relative to the TO angle of the upper antenna alone.
Author: harpole@pegasus.cc.ucf.edu (Charles H. Harpole)
Date: Wed, 29 Apr 1998 18:02:08 -0400 (EDT)
And, I still also question the possibility of a computer program (at today's level of technology-- especially in hams' hands) having enough of the skads of variables so that a computer can model an a
cheapest, quickest way to a better signal is to go >QRO (no flames please!) Actually one of the best investments I have ever made in receive enhancement is going from 100 watts out to 1500 out . Kee
But K7LXC et al did their measurements on a range. And they converge remarkably well with the computer models. Take the precautions outlined on LB's web page and the current generation of modeling so