The more I use and learn about NVIS, the more I am convinced it is the optimal post disaster communications mode in virtually every circumstance. Great video. Keep up the good work.
Agreed. The ionosphere is the only _”infrastructure”._ The only circumstance where it could conceivably be unusable would be and _Electro Magnetic Pulse (EMP)_ or a _Coronal Mass Ejection (CME)_ which could disturb the ionosphere. *73 de AF6AS in **_“DM13”_** land*
Thanks. I've confirmed that with the SEC and will add that to ERRATA in the video description. I went from the information on the ARRL Ohio Section SEC page, which (as shown in the video) indicated six-digit grid. I expect that will get corrected soon if it hasn't been already.
I use NVIS exclusively on 40 meters, largely because calling for a few seconds a DX station does not interest me. I use folded dipoles or an inverted V as the antenna. Sometimes only inches off the ground. What I noticed is impedance drops when a 50 ohm resonate antenna becomes close to the ground. I therefore use a Folded Dipole design constructed from stereo speaker wire. The folded dipole transforms the feedpoint impedance by a multiple depending on wire separation. The speaker wire geometry I find to be perfect for turning an otherwise low impedance to 50 ohms.
The more I use and learn about NVIS, the more I am convinced it is the optimal post disaster communications mode in virtually every circumstance.
Great video. Keep up the good work.
Agreed. The ionosphere is the only _”infrastructure”._ The only circumstance where it could conceivably be unusable would be and _Electro Magnetic Pulse (EMP)_ or a _Coronal Mass Ejection (CME)_ which could disturb the ionosphere.
*73 de AF6AS in **_“DM13”_** land*
Good info. This gives me great insight how propagation works on a much deeper level. Thanks for the new knowledge.
As a new operator interested in nvis, this seems to clarify some of the fog. Excited to try to implement the new info
FYI, Most ARES stations will be looking for COUNTY as the exchange, not grid square. Or at the very least, in addition to.
Thanks. I've confirmed that with the SEC and will add that to ERRATA in the video description. I went from the information on the ARRL Ohio Section SEC page, which (as shown in the video) indicated six-digit grid. I expect that will get corrected soon if it hasn't been already.
Thank you for making such a well organized set of training videos! 73 de KLØT
Are they going to do it again next year?
I expect so. We've done it every year since it was announced. We typically run some special add-on tasks from BLACK SWAN Net to mix it up.
@KD8TTE excellent. I will check-in through conventional skywave, too far for NVIS.
What is 60C1, 60C3 and 60C5 emissions?
Those are channel (frequency and mode) designators used on BLACK SWAN Net. www.blackswancomex.org/net/soi
I use NVIS exclusively on 40 meters, largely because calling for a few seconds a DX station does not interest me.
I use folded dipoles or an inverted V as the antenna. Sometimes only inches off the ground.
What I noticed is impedance drops when a 50 ohm resonate antenna becomes close to the ground. I therefore use a Folded Dipole design constructed from stereo speaker wire. The folded dipole transforms the feedpoint impedance by a multiple depending on wire separation. The speaker wire geometry I find to be perfect for turning an otherwise low impedance to 50 ohms.
Grill Operator 😂