http://odxa.on.ca/Articles/Easy Antennas for the SWL.pdf
http://kv5r.com/ham-radio/shortwave-antennas/
Don't get overwhelmed by all this info...However this will give you a start as to what you can try for home use to maximize your listening. When I was playing with SWLing years ago I did pretty well with just wire thumb tacked to the drywall all around the inside of my bedroom.
https://www.gigaparts.com/MFJ-1020C.html?gclid=CIfNw7rbh9ECFY9hfgodPgsEmg
For portable and just to get going one of these "Active antennas" can make a big plus over the standard antennas that come with the units. You need to make sure that what ever receiver you purchase has an antenna jack for using an extra external antenna.
All the Best
Gary
http://kv5r.com/ham-radio/shortwave-antennas/
Don't get overwhelmed by all this info...However this will give you a start as to what you can try for home use to maximize your listening. When I was playing with SWLing years ago I did pretty well with just wire thumb tacked to the drywall all around the inside of my bedroom.
https://www.gigaparts.com/MFJ-1020C.html?gclid=CIfNw7rbh9ECFY9hfgodPgsEmg
For portable and just to get going one of these "Active antennas" can make a big plus over the standard antennas that come with the units. You need to make sure that what ever receiver you purchase has an antenna jack for using an extra external antenna.
All the Best
Gary