So, yep, I received a new shortwave radio over christmas. Always wanted
one, but had no clue as to what you could hear on them other than signals
from far off places. I've always been fascinated with searching the
airwaves though, and, so far have found this little gadget to be very
interesting.

I've been quite surprised at the type of content that I've heard. I think
I've been saved ...... twelve times.

Anyway, while searching I've run across a lot of weird noises. Lots of
warbles, and oscillating ticks and hums. Some of them are confined to a
specific frequency, but some bleed across several. Defiantly not a random
event. I know what code sounds like, but a lot of these aren't code. They
seem to occur around the naval maritime bands. I know that the navy has
huge land based antenna that I've heard they use in a network to transmit
the time so ocean going vessels to tell their longitude, but it seems like
they could just tune into "the tick". Anyway, I'm just interested in what
these could be, not exactly what they are. Could they be 'jamming',
machine's talking to machine's (like a modem) or other?

Also, my radio is a Grundig YB400PE. Is there something that I could rig
up with speaker wire or something that would give better reception than the
whip that came with it? I've read that outdoors is always better, but I
really don't have that option. I've also read that you have to be careful
not to overload the little radios by hooking a huge antenna up to them. If
I strung a few loops around a room, would that be too much. Would looping
it around a room 3 times give me an antenna of length 3 times the rooms
perimeter, or would it be equivalent to just one time the rooms perimeter
with a lot of wasted wire? How should the antenna be terminated? Just
leave the end up on the wall, or run it back to the radio? And lastly,
would something as I've described really make a difference in reception, or
should I just stick to the factory whip?

Thanks




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