Svar till: 2025-07-01 – SAQ test transmissions received

[rich.g.williams]

A better antenna this time! A good 25m length at height 3.5m connected to Ground at the far end, feeding through the primary of an isolating transformer and then to a nearby Ground. The secondary of the isolating transformer is connected directly to a Windows 11 HP Laptop sound input via a 470 Ohm resistor in series (needed to keep the Jack input working). Will record and process using Audacity. No amplifier, no analogue filtering, no resonance, this time – the antenna signal is more than adequately strong.

Ran some tests earlier (thought I could see some very faint carrier at 17200 Hz?) other VLF stations giving very strong signals. Looking forward to recording SAQ live transmissions on the 100th year later today.

Best regards,

Richard.