20-04-2023, 05:09 PM
(This post was last modified: 20-04-2023, 05:16 PM by Mike Watterson.)
I have a clock Radio that uses the UK Time signal. Stupidly there is no way to manually set it and it can take several days to update.
Also why do no devices with UK or German time signal reception have:
1) A DST disable switch. Some usages require UTC.
2) A +/- offset switch with maybe 3, 4 or 5 settings. What if you are not on UK or German (CET) timezone?
Penny pinching.
Low voltage? Possible 40+ years ago for 60 kHz or 77kHz and also the logic. Quartz clocks divide from 32768 Hz to 1 Hz on 1V supply.
The UK MSF signal, formerly the Rugby clock is on 60 KHz and now in Anthorn, Cumbria. The other well known one is on 77.5 kHz, DLF77, Located southeast of Frankfurt am Main with a range of up to 2,000 km. So I should be able to get that in Limerick as it's about 1230 km. UK effectively blocked Ireland joining CET permanent Summer Time as we can't have a time border in Ireland, so the scheme to ditch the pointless twice a year time switch adopted in UK & Germany due to the war in 1917 is on hold.
Radio Time clocks maybe also should have a MSF /DLF77 switch? None have. You buy one or the other.
Other time signals:
https://en.wikipedia.org/wiki/Radio_clock
Atomic clocks are now affordable which makes it a risky cost saving using GPS Satellite derived timing for mobile phone masts, DTT, DAB and some internet backbone systems. One decent solar flare and the GPS is gone.
The ZN414 TRF receiver was 1972 and used a 1.5V cell. The 4000 series CMOS was launched in 1968! It could run off 3V. There has been logic that will run off less than 1V for decades.
Oh, and Irish consumers that bought Clock Radio that has DAB and FM? Many only set time by the DAB reception. At best Irish National DAB only had about 45% coverage and closed in May 2021. It was a duplication of Digital Radio on DTT and Satellite and had no local stations.
I now use a Sangean World Radio with a standalone quartz clock as the alarm. Unusually you can use the numeric keypad to type in the time.
Also why do no devices with UK or German time signal reception have:
1) A DST disable switch. Some usages require UTC.
2) A +/- offset switch with maybe 3, 4 or 5 settings. What if you are not on UK or German (CET) timezone?
Penny pinching.
Low voltage? Possible 40+ years ago for 60 kHz or 77kHz and also the logic. Quartz clocks divide from 32768 Hz to 1 Hz on 1V supply.
The UK MSF signal, formerly the Rugby clock is on 60 KHz and now in Anthorn, Cumbria. The other well known one is on 77.5 kHz, DLF77, Located southeast of Frankfurt am Main with a range of up to 2,000 km. So I should be able to get that in Limerick as it's about 1230 km. UK effectively blocked Ireland joining CET permanent Summer Time as we can't have a time border in Ireland, so the scheme to ditch the pointless twice a year time switch adopted in UK & Germany due to the war in 1917 is on hold.
Radio Time clocks maybe also should have a MSF /DLF77 switch? None have. You buy one or the other.
Other time signals:
https://en.wikipedia.org/wiki/Radio_clock
Atomic clocks are now affordable which makes it a risky cost saving using GPS Satellite derived timing for mobile phone masts, DTT, DAB and some internet backbone systems. One decent solar flare and the GPS is gone.
The ZN414 TRF receiver was 1972 and used a 1.5V cell. The 4000 series CMOS was launched in 1968! It could run off 3V. There has been logic that will run off less than 1V for decades.
Oh, and Irish consumers that bought Clock Radio that has DAB and FM? Many only set time by the DAB reception. At best Irish National DAB only had about 45% coverage and closed in May 2021. It was a duplication of Digital Radio on DTT and Satellite and had no local stations.
I now use a Sangean World Radio with a standalone quartz clock as the alarm. Unusually you can use the numeric keypad to type in the time.
