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Comment Weird summary (Score 1) 128

What a weird summary:

The new codec isn't "competing with single-sideband modulation".

Normal SSB is unprocessed speech. So the codec is simply competing with natural speech.

The claim that SSB "is used by ham contesters to score the longest-distance communications using HF radio" is just plain wacky. So they use natural speech too talk to each other???

Comment Re:Simple, I don't run Win 7/8.1, I run Win 10 (Score 1) 405

I do agree. I still use Windows because so much of my essential software will only run on Windows.
I have a string of Unix qualifications dating back many years. I have a couple of Linux machines and periodically try new releases, but I always seem to run into some major problem...

However my main dislike of Linux is what I perceive as the childish users and flakey implementations. Really garish screens with dragons, blood, skulls and the like.

This whole thread is such a good example. The original OP asked a reasonable question, and got nothing back except a string of childish rants. If only the Linux fans could see that their schoolboy attitude is holding Linux back...

Comment Accurate clocks (Score 1) 291

The modern clock chips (eg the Maxim DS3231) are incredibly accurate, eg around a minute per year without user calibration.
http://theradioboard.com/rb/vi...

Alternatively there are many projects using a cheap GPS module to provide a time and date readout.http://geoffg.net/GPS_Synchronised_Clock.html

I'm not sure about commercial products though, sorry.

Comment Brain Waves (Score 1) 123

I'm surprised that no one has mentioned that Brain Waves (eg Beta, Alpha, Theta, Delta) were discovered at the beginning of the 20th century.
Different brain wave frequencies have long been associated with different mental states.

Building Brain Wave Detectors was all the rage amongst hobbyists many years ago.
Brain Waves are normally detected using electrodes on the scalp, but they also generate very weak fields which can be picked up by non-contact methods in a screened room.

Surely this is simply an extension of that research?

Comment Re:Myth? (Score 1) 160

> Antennas are sized and shaped for the specific frequency the radio will be feeding into it. Changing the antenna size to something incompatible can destroy the radio, the radio wave, or both.

Sorry,, but this is completely wrong.

If you just changed to a different frequency dipole, then yes.

But that isn't what was suggested. You can change to a larger antenna which DOS work on the same band, eg a phased array, a yagi, capacitive loaded dipole, or in his example, a dish. The antenna must still be resonant, but have a larger capture-area.

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