Hi Horacio,
I use a RCA RP5140 handheld recorder. It's about half the width of a pack of
cigarettes, but slightly taller and the same depth. It records directly into
MP3 format. It doesn't have a line-in jack, but it does have a microphone-in
jack. So I simply use an attenuating cable from my
There was a paper in the IEEE about HF reciprocity in the mid 1980's which
showed that HF reciprocity did not always exist. See:
A new wideband HF technique for MHz-Bandwidth spread-spectrum radio
communications
by B. Perry, Communications Magazine, IEEE
Volume 21,
