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Time wrong ? MSF Clock is Exact. Never gains or loses,
SELF SETTING at switch-on, 8 digits show Date, Hours, Minutes
and Seconds, 0.5" and 0.3" red LEDs, larger digit Hours and Minutes for easy "quick glance"
time, 24 hour format, automatic GMT/BST and leap year - and leap seconds,
expandable to Years, Months, Weekday and Milliseconds or use as a stopclock
to show event time, also parallel BCD (including Weekday) output for computer
or alarm and audio to record and show time on playback, precise minute
and seconds pulses, uses 4000 series CMOS so no microprocessor interference, 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),
narrowband (100 Hz) superhet receiver, 50dB agc range, can drive "S" meter,
3 kHz (audio) IF, receiver board (antenna, serial data output, 10 mA supply)
can be remoted (3 wires), serial data output 8 V = carrier, 2 V = break,
Seconds, Minutes and BCD outputs 0 - 10 V, Weekday as Wednesday = 3 etc,
connections by terminal block, polarity protected, needs 12 V at 150 mA, 5 x 8 x 15 cm, 400 g.
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"complete and well documented", Radio and Electronic Constructor.
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"particularly satisfied with the pcbs", BIL in Rochdale.
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"neat looking", CMT in Malta.
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"interference immunity higher than other makes", RAF in Sussex.
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"worked first time ... superb kit", MDA in Luton.
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"very good signal", RWD in Saudi Arabia.
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"well made, very interesting", PC in Eire.
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This fun-to-build kit used to include all parts, tinned drilled fibre-glass pcbs, pre-wound coils, case, connectors, screws etc
as well as detailed assembly and operating instructions including circuit description and diagram, all decoding details
and was priced at £97.90 including VAT and UK postage.
Please e-mail martincambridge@live.co.uk
for the latest price reduction, details of payment and any extra parts now neeeded.
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The MSF Clock was launched in the late 1970's (e.g. Short Wave Magazine Nov 1979 page 510) as the world's
first commercial Radio Controlled Clock. By the early 1980's the volume of sales was enough
to influence the National Physical Laboratory in finding another transmitting site to continue
the time signals after the dismantling of the huge VLF antennas at Rugby.
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