Hi Graham, Roelof,

There will be an encore tonight starting 2300.
Still tinkering on VLF and giving some thought to raising the aerials
again.

73 to all
Joe VO1NA

On Sat, 15 Apr 2017, Roelof Bakker wrote:

Hello Graham,

Thank you for the accumulated results of last night's 477 VO1NA OP8
reception. Results are promising as propagation was rather mediocre.

I find it amazing how well the cheap RTL-SDR V3 dongle worked.

Is the signal to noise figure referenced to a bandwidth of 2500 Hz?
If so, using a 12 Hz filter for aural copy, yields an improvement of
about 23 dB.

73,
Roelof, pa0rdt