. > > http://www.ebay.com/itm/10-MHz-filter-kit-for-tcxo-gps-pll-/110893777470 > > The price with a board seemed low enough that I ordered a few.

martyn@ptsyst.com said: > My question is should I expect exactly 32.768000000 kHz (obviously assuming > we use the same 10 MHz to drive the divider and all test equipment)? Yes, as long as you are feeding the same reference to your counter and your divider you should get an exact answer. > The closest I can get the 32.768 kHz is within about 0.1 Hz.

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Until recently, the two masers were amongst the most stable in the world and was often selected to be contributors to the group of 10 that defined the UTC. All outgoing mission critical cables are either coax with solid screen or a mixture of braid and copper foil such as CNT-400 or CNT-400-Flex.

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> > David > > > >>>> Eamon Skelton 03/03/2008 08:50 >>> > David Hilton-Jones wrote: >> Does anybody (preferably in the UK for P&P) have surplus to their >> requirements a stable oscillator producing a sine wave at 10, 20, 40 or >> 50MHz at 5-10dbm?

> > Content-Type: text/plain; charset="iso-8859-1" > >> Hi >> >> Have you looked into any actual data on small rf transformers under >> vibration at 10 MHz?

. > > Double the 10 MHz to 20 MHz. > > With another circuit of 74HC390’s divide 10 MHz to > 200 KHz. Then double it twice to 800 KHz > with LM 1496 DBM’s. Apply the two > frequencies to a LM 1496 DBM and use a LPF to get the 19.2 MHz. > > Hardware complicated? A bit. Only a bit?

A Windows 10 PC is only powered up while we are there, so on around 2-4 hours per week. > > Does anyone have any thoughts on what might be the most suitable software to run on our Windows 10 PC to set the time correct? > > Someone installed "Dimension 4" > > http://www.thinkman.com/dimension4/ Using inbuilt server lists is not too good an idea .