Antenna Noise Bridge Low Frequency Converter 60 kHz Receiver VLF Receiver 198 kHz Converter
50 & 70 MHz Converter Audio Oscillator MSF Clock Tunable Audio Notch Filter Programmable Chime
Antenna Tuner Speech Compressor Two Tone Oscillator Sound Meter 136 kHz Crystal Calibrator


Narrowband (100 Hz) superhet receiver, as used in the MSF Clock, with outputs for 3 kHz (audio) IF, "S" meter and serial data (8 V = carrier, 2 V = break) - including all decoding details to extract accurate Year, Month, Weekday, Date, Hours, Minutes and Seconds with automatic GMT/BST and leap year - and leap seconds, Basic listings for local, GMT and sidereal time, receives Carlisle (used to be from Rugby, callsign MSF - "standard frequency") 60 kHz atomic time signals, accurate to 1 part in 10^13 (300µs in 100 years), built-in antenna, 1000 km range (provision for external antenna beyond), 50dB agc range, easily retuned 10-150 kHz, 50 dB agc, connections by terminal block, polarity protected, needs 12 V at 10 mA. 5 x 8 x 15 cm, 250 g.

"your design is the best", RM in Staffs.
"worked first time", SJP in Cheshire.

This fun-to-build kit used to include all parts, tinned drilled fibre-glass pcb, pre-wound coils, case, connectors, screws etc as well as detailed assembly and operating instructions including circuit description and diagram, all decoding details and needs only a meter and speaker to tune, and was priced at 35.30 including VAT and UK postage.
Please e-mail for the latest price reduction, details of payment and any extra parts now neeeded.

TTL interface for 60 kHz Receiver serial data