afraid the two-ammeters method is only the roughest of checks. Because it only measures the overall magnitudes of the currents in the two legs, it is only capable of detecting gross levels of unbala
Some readers may be interested in measurements made on a "real world" antenna - a 100ft doublet centre-fed with window-line. At the shack end of the window-line, the equivalent star-network impedance
Some readers may be interested in measurements made on a "real world" antenna - a 100ft doublet centre-fed with window-line. At the shack end of the window-line, the equivalent star-network impedance
Not sure if this link has yet been quoted in this discussion: http://users.tpg.com.au/users/ldbutler/Line_Diff_Long_Meter.htm Steve G3TXQ _______________________________________________ _____________
Thanks for the reference, Paul. 73 from Ian GM3SEK it it is legs. phase that he shows an _______________________________________________ _______________________________________________ TowerTalk mail
No, it hadn't - thanks, Steve. 73 from Ian GM3SEK _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http
Author: Edward McCann via TowerTalk <towertalk@contesting.com>
Date: Sat, 25 Jun 2016 10:38:46 -0700
Thanks. The original paper notes since the unit is floating it can be used on each leg of open wire. Would this be as simple as connecting the two wires of the open wire feed to the uhf plug input? O
Some readers may be interested in measurements made on a "real world" antenna - a 100ft doublet centre-fed with window-line. At the shack end of the window-line, the equivalent star-network impedance
Jim, I'll need to dig back through my lab notebooks to see if I made measurements on other bands. A SPICE analysis shows that if you connected that window-line load to the output of an unbalanced tun
Jim, Found a 10.1MHz measurement: Z1 - Window-line Leg 1 to Star Common: 13.7 - j41.1 Z2 - Window-line Leg 2 to Star Common: -2.6 - j84.8 Z3 - Star Common to Ground: 94 - j50 Even greater imbalance!
Yes, Jim the math is the sticky part. However, it turns out that the way the Keysight E5071C works, is that you go to the Keysight site and download some "Visual Basic" software, and install it on yo
Actually, the reason is to minimize crosstalk between pairs by the mechanism that Neil Muncy (W3WJE, SK) called "shield-current-induced noise." He was describing it on shielded twisted pair where the