SV1XV's photos with the keyword: VLF

eQSL card confirming reception of Grimeton Radio SAQ on July 4, 2021 on 17.2 kHz VLF.

QSL card confirming reception of a special CW transmission from VLF Rugby Radio Station GBR on 16 kHz (2001).

Swedish stamp commemorating Varberg - Grimeton Radio station SAQ with a perspective view of an antenna latice mast (2005). SAQ transmits occasionally on 17.2 kHz using a mechanical Alexandersen generator transmitter (1924).

Schematic of my VLF & LF up converter, using a Simens S042P IC as a 4 MHz local oscillator and mixer.

Reception of Christmas Eve transmission by Grimeton Radio SAQ on 17.2 kHz using my Perseus SDR receiver.