Thought NVIS was limited to 40m for the lowest frequency. That any NVIS below that would fail, like 80m?


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Quote from: gil on April 29, 2016, 04:15:28 AM
Thanks for the tip! If only modern radios had Bluetooth built in... What are they waiting for?

Gil

I do not understand the lack of Bluetooth circuits in radios and other equipment.  Just installed a Bluetooth keyboard and mouse on my computer to make it more portable and immune to RF noise. Have no idea why manufacturers are not more creative about that.

All equipment turned off. Running radio on car battery. Still s7 to s9 noise. Constant.

Could be neighbor equipment. Guessing.


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Am going to post this discussion on multiple forums in hope to get more thinking about this

How does a beginner work with s7 to s9 constant HF noise levels?  Living in an apartment that is what I see always. 
There is no way to put up a large antenna outside, and even if I had that there is no guaranty that transmission/reception would work. 

My only break through has been jt65 and some CW.  Hoping this can be discussed more to reduce hobby frustration for beginners on the HF bands.


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I would also suggest a few YouTube videos on the subject.


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Am surprised there is not more talk of messaging via the message mode of APRS.  You can even send a text via a gateway that resides on APRS to do just that.  Combine that with some HF capabilities and you can communicate anywhere in any conditions.

The latest I am looking at is called ROBUST  PACKET to get through when all other paths are too noisy.

http://wa8lmf.net/aprs/HF_APRS_Notes.htm

You did not mention Droid APRS too as an app.

This can't be fixed by that company. That would entail admitting the original has problems that must be addressed. Which could invite legal action for those wanting a replacement upgrade. I speculate.


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