HRO-5 on 630M WSPR

I recently modified a spare “F” HRO-5 coilset (500-960 kc) to bandspread the 630M band, providing 10 divisions per kilohertz now.

hro-5ta1

There is some frequency drifting on the order of +/- 20 Hz, but I wanted to see how well the receiver would hold up decoding WSPR stations on the band.   Below is a capture of the WSJT-X 1.6.0-devel waterfall showing WSPR signals:

Screenshot_2015-11-17_23-11-26

Despite the less-than-perfect stability, there have been numerous decodes as seen in the WSPRnet.org database listing:

hro5-wspr-630m