I have a 135' center fed dipole up at 50 feet strung between two trees in the clear fed with 108' of 450 ladder line. I am using a Palstar BT1500 balanced-L design antenna tuner. I also have an MFJ-8
My guess is that the balun on the tuner has insufficient impedance. Even a "balanced" tuner relies on the balun to force current balance... and if it's not an a balun with extremely high common mode
Not if it's a link-coupled balanced tuner. Paul, W9AC _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com
That's certainly true... but the Palstar unit mentioned isn't one. _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@con
Sounds like it's time to check the calibration of your MFJ-835. Assuming an imbalance, reversing the polarity of the output terminals should simply show the same reading but on opposite channels. Rev
If you have a current imbalance on open wire line, you have common mode current. Only in the perfectly balanced case (equal and opposite currents) is the line operating with differential mode curren
I agree with your conclusions Dan, and with your first explanation. Since you got me on that one, just for the sake of argument, I will pick on your last statement. ..."I think the meter is fine. The
Thanks for keeping me honest ;-) It's easy to have nonzero common mode and equal and opposite differential mode currents with coax and two seperate sources... just make current flow on the shield wi