On May 7, 12:20 pm, Radium wrote:
On May 7, 11:02 am, "ralph" wrote:


Why doesn't DX work at 300 GHz?

Well, there could be, but at that freq, it would have to be line of
sight.. Like light rays... So DX isn't gonna happen too often, unless
one is on the space shuttle, or you each have gazillion foot towers,
with dishes or whatever aimed exactly at each other..
BTW, a QSO with the shuttle might qualify as DX, due to the
high frequency involved, but the actual distance still won't be too
awful far.. IE: 150-300 nm or so, depending on the orbit..

You probably wont hear a thing unless your inside a big city. And then only
on FM or spread spectrum that = NOTHING!

But on AM, won't magnetic interference cause tones on the receiver of
any frequency provided that the disruption is occurring at the
frequency?

The "tones" you hear at night on MW are heterodynes. IE: the carriers
of various stations clashing with each other. This is due to the
increased
sky wave signals at night. In the day, you have little sky wave, and
most stations you hear are ground wave. Being most are on separate
frequencies, you don't hear many het's...
Het's are a common noise on the CB bands... AM anyway...
Listen to ch 19...Heterodyne city...
You would hear the same thing at 300ghz if two stations were
on the same frequency at the same time. Frequency has nothing to
do with that.

If there is a solar storm causing the emission of electromagnetic
radiation at 300 GHz wouldn't the 300 GHz receiver pick up the signals
caused by the solar storms?

I imagine so, if the antenna, dish, whatever were pointed at the sun.
At that frequency, most anything you hear will be direct line of sight
space wave. So don't expect to hear too much around there, unless
you have services using that freq in your close area. I don't even
know
who uses 300 ghz to tell you the truth.. That's a pretty high
frequency.
MK