Whilst I still firmly believe that the QRP LABS GPS units are the best solution for timing, (damn they are good!), I suppose that there is a bit of mileage to be had for an LF style solution. Since it

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I had a Most Accurate Clock for several years, and my recollection is that it polled the HF WWV signals to keep its time accurate. I don’t believe WWVB on 60 Hz had anything to do with it. I have a co

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WWV transmits a 100Hz subcarrier with Time and Date information. The very old Heathkit “Most Accurate Clock” used that to set the clock, and that was Heathkit! Mine still works not it’s been recapped

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My interest in this subject is automatically decoding an HF time source. It isn't because I need it or even think it is useful for almost anyone, but I think it is interesting. I'll take a closer look

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If all you want is time over radio. Use an old cellphone? Do TV sets transmit a time signal? I remember a colleague using a BBC transmitter that could be seen from two different locations to synchroni

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Peter, It is cheap and simple to have your own GPS reference for HF up to about 14MHz fundamental. https://www.ebay.co.uk/itm/VK2828U7G5LF-GPS-Module-with-Antenna-TTL-1-10Hz-with-FLASH-Flight-Control-

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I have mourned the loss of the HF frequency standard stations in Europe. There used to be several, such as MSF here in UK which transmitted on 2.5, 5 and 10MHz from memory. It was closed down quite a

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In some parts of Europe the Russian time station, RWM, can be received on 4.996, 9.996, and 14.996 MHz. I usually hear at least one of them in Oslo. See https://en.wikipedia.org/wiki/RWM

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On Tue, Feb 28, 2023 at 11:05 AM, Joshua KJ7LVZ wrote: The obvious answer is because we have GPS so HF is unnecessary, but I still think the idea is fun. The obvious answer is the same reason why WWV

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Universal Solder sells a couple of WWV receiver kits. I bought the cheaper one and made a clock using an Arduino just for fun. I'm now going to see if I can use for my U3s 1PPS clock. The code for thi

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the Heathkit clock was not 10 Mhz. It was THREE bands, and would scan them all and determine which one was the best option to begin decoding. Pretty advanced for its' day!! ....Dave On 2/28/23 11:05 A

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There is some Ardunio code sources that are available to do the decoding. A simple Internet search will find the code. Add a microprocessor and you should be all set. I hope this is a help.

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In the United States we have WWV, Canada has CHU, but is there an HF time broadcast source in Europe? I had fun decoding the WWV binary date code (BDC) by hand this past weekend and got to thinking, w

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Hi Ken, Willie, Yes, I forgot to ask Hans to use QRP Labs enclosure, hi... I find it as exactly the right one for the job. It is David's N7DDC ATU-100 upgraded for a greater sensitivity (only up to ~4

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Nice! Especially like the QRP-Labs branded ATU-100 8*) 73, Willie N1JBJ

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Hi Bojan, I have an ATU-100 (modified for 1watt input), and was thinking of putting it into a U3S enclosure. Do you have any internal pics of it, and what display did you use? 73 Ken g4apb

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Hi, These are two of my QRP Labs projects finished and put in the enclosures. VFO and Clock. To the VFO kit I have added an old QLG-1 and a linear power supply from +12V to +5V. To the Clock kit I hav

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On Tue, Feb 14, 2023 at 09:09 AM, Rob Giuliano wrote: Curious - why "you" chose to slow the system clock? The original poster stated that they had a very accurate 15MHz clock, so improved accuracy was

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On Tue, Feb 14, 2023 at 01:22 AM, HF wrote: To explore this, I installed a 14.060 MHz crystal and set the "system frequency" Curious - why "you" chose to slow the system clock? Heat? Accuracy? Experim

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Halden, Sorry, you were talking timing. I do not remember anyone changing the 20MHz frequency. Good timing stability has been reported by accurately setting the frequency. I did this and drift was min

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