Dear LF Group,
Transmitted on 72.4018kHz from about 2315 until 0505 last night, with QRSS120.
I also saw SM6LKM's 80m signals, about 5-6 Hz above the nominal frequency,
between about 2130 and 2300. Copy was "M" to "O" (see attachment) - I found
better results were obtained using somewhat wider bandwidth spectrogram
settings than usual - Using Spectrum Lab, about 0.3Hz resolution, and Argo
on 3s dots, slow speed, seemed to be optimum. If higher resolution was
used, the lines were quite fuzzy, whether due to propagation or TX I don't
know. RX was RA1792, and the antenna was my LF TX wire. This could be an
interesting way of monitoring HF propagation; It hardly takes up any
bandwidth, and does not require an elaborate TX or antenna to get a few mW ERP.
Cheers, Jim Moritz
73 de M0BMU
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