New RA0SMS mini-whip antenna on the roof. The old one lasted from 2017/02 to 2018/10.
LF time signals
Time signal reception with a long-wire antenna and a PA0RDT mini-whip antenna. HP89410A analyzer set to 50 Ohm input, 100 Hz span, 1 Hz RBW. The signals are from:
PA0RDT Mini-Whip antenna
Antenna in a bottle installed on the roof today. Stay tuned for a future web-SDR...
An article, some theory, some notes on grounding, some comparisons,
There's also a modernized circuit by PA0NHC
RF power amplifier of DCF77 modulated time-code transmitter.