I agree with that, Scott. 73 Rick Rick, this is true, but even the 450 ohm ladder line stuff is certainly better than a long run of coax. 73 Scott -- Original Message -- From: "NJ0IP" <Rick@DJ0IP.de>
((Some content deleted)) Your point is that the better the feedline, the lower the losses, and open wire feedline is best. All true and I totally agree. The point is, if you use the very best feedlin
Author: Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>
Date: Fri, 20 Jan 2006 19:00:30 -0600
Based on average antenna heights above ground for the average ham location, for a 1/2 wave antenna operated on an even harmonic, the feed Z is typically in the order of 1000 to 1500 ohms. In theory,
Or 2:1 with open line, 600 ohm. -- Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net> wrote: __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best s
I am curious, what are you basing that on, Bob? My computer modeling suggests otherwise, but I am using the NEC-2 engine, so I don't know how valid my data is. The ARRL antenna book mentions that inp
Actually if you have a very-low impedance load, a low impedance line is better. Open wire line made from say #14 copper has more loop conductor resistance per unit length than a piece of Andrew LDF4-
<< Fortunately I've never been forced to use anything other than resonant antennas fed with good quality 50 ohm coaxial cable. If you're bound and determined to use open wire feeders to one of the ma
--and I've worked all over the world through a tuner with one watt, cw, ssb, and psk. All depends on a lot of variables. This is not a simple "this works- this won't" discussion. mike k5wmg one watt
Author: Robert & Linda McGraw K4TAX <RMcGraw@Blomand.Net>
Date: Sun, 22 Jan 2006 15:22:49 -0600
Folks, lets look at the REAL numbers: RG-213 length = 100 ft Frequency = 10 MHz SWR = 30:1 {thus load Z = 1500 ohms} 100 watts in results in 31.5 watts out RG-58 length = 100 ft <Do you actually dare
<< Fortunately I've never been forced to use anything other than resonant antennas fed with good quality 50 ohm coaxial cable. If you're bound and determined to use open wire feeders to one of the ma
variables? - especially the ops at the other end ;>) 73 ways I know watt, cw, ssb, and psk. All depends on a lot of variables. This is not a simple "this works- this won't" discussion. ______________
True, but I also have been loud at the other end and pulled my share of low sigs out of the mud here. mike k5wmg one watt all the time _______________________________________________ TenTec mailing l