Re: [BVARC] Band question

[Michael Shanks via BVARC]

Hey Marvin, I got a 40 m inverted V it’s only about 20 foot in the center off the ground but 10 foot on either side closest contacts I’ve had is 32 miles furthest contact is Italy Sent from my iPhone On Sep 30, 2025, at 12:47 AM, Suggs, Marvin (KTRK-TV) via BVARC <bvarc@bvarc.org> wrote:  Great info guys thank you. Sent from my iPhone On Sep 29, 2025, at 7:13 PM, Stephen Flowers via BVARC <bvarc@bvarc.org> wrote:  This Message is From an External Sender Caution: Do not click links or open attachments unless you recognize the sender and know the content is safe. Marvin, Good evening.  I believe that it would depend on the type of antenna that the transmitting and receiving stations are using.   One option would be Near Vertical Incidence Skywave (NVIS) for which horizontal dipole antennas mounted < 30ft above ground may work.  Another option would be using vertical antennas with a low takeoff angle which would use ground wave.   I have had good results with the latter on 40m and 15m. I suppose that a third option may be to use Yagi-Uda antennas with driven elements, reflectors, and directors, though for frequencies like the ones above they’d be dimensionally large.  The good thing is that their radiation patters would be well focused and directional so as to make them applicable to NVIS or Ground Wave radio propagation modes, depending on where it’s “aimed”. Best of luck. 73, Stephen (W2WF) Ground wave en.wikipedia.org <wikipedia.png> Near vertical incidence skywave en.wikipedia.org <wikipedia.png> On Sep 28, 2025, at 8:08 PM, Joseph Benoit via BVARC <bvarc@bvarc.org> wrote: Could play with nvis but 10 meter groundwave (vertical antenna) most practical. On Sun, Sep 28, 2025, 8:04 PM Suggs, Marvin (KTRK-TV) via BVARC <bvarc@bvarc.org> wrote: What HF band would be conducive with 2 base stations 30 miles apart wishing to communicate? Thanks Marvin N5RKW Sent from my iPhone ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ ________________________________________________ Brazos Valley Amateur Radio Club BVARC mailing list BVARC@bvarc.org http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Publicly available archives are available here: https://www.mail-archive.com/bvarc@bvarc.org/ <wikipedia.png> <wikipedia.png>

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