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| Subject: | Re: LF: Re: 136.1725 kHz DFCW |
| From: | Markus Vester <[email protected]> |
| Date: | Tue, 18 Feb 2014 08:33:11 -0500 (EST) |
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Thanks Jay for this info. I like the switchable Beverage, using the coaxial cable both in common and odd mode.
One thing I has always puzzled me is which way is A and B: In analogy to a short directional coupler with capacitive and inductive coupling to a transmission line, an E-H or flag or K9AY antenna receives signals from the "back" side where the receiver is connected. On the other hand, it looks like a long Beverage would be sensitive towards the terminated side, like more like a leaky-waveguide forward coupler. Is there a transition between the two modes of operation (backward and forward), eg depending on wire length?
Best 73,
Markus (DF6NM)
Von: jrusgrove <[email protected]> An: rsgb_lf_group <[email protected]> Verschickt: Di, 18 Feb 2014 2:13 pm Betreff: Re: LF: Re: 136.1725 kHz DFCW Markus
Grabber 1: Harris RF-590 / large K9AY (pointed east) http://www.w1vd.com/k9ay11.pdf
Grabber 2: R-75 / 1000' BOG (directional on 500 kHz ... bi-directional on 137 kHz) http://www.w1vd.com/500kHzBOG.pdf
Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2
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