I will share one experience I have had with WOLF. For several years I
tried to copy the 1 watt 180 KHz Lowfer beacon TEXAS which is over 1000
miles from my QTH. I was finally able to copy this beacon in QRSS mode
with Argo as long as the QRN level was low. When the thunderstorms
season started I could no longer copy TEXAS. Then Bill started
transmitting WOLF. The first night I tried I got excellent copy but the
QRN was low so I wasn't surprised. Each night for a week I made a
recording. As thunderstorms built up during the week the QRN really got
bad. On about the third night the Argo screen was wiped out with noise
as I could not even see strong loran lines. WOLF still came through
with good copy. On the last evening I recorded TEXAS the thunderstorms
were so close I should have shut down the station. Even then I was able
to get a few lines of copy with WOLF. Under these conditions is where I
have found WOLF to copy where QRSS could not.
That's very interesting, and points to a way to extend the DX season,
especially in more equatorial regions.