On 2/7/21 3:28 PM, Dana Whitlow wrote:
Not daft at all, Andy. Closely related would be measurements of phase
change between
near the switched load and far away, over a stretch of a few system time
constants.
This would be more challenging, but perhaps doable.
Dana K8YUM
If you happen to
Am 08.02.21 um 00:11 schrieb Philip Gladstone:
As an amateur radio guy, I can't help wondering whether I could use this as
a *very* low bit rate channel across the country.
I have done navigation _for_ tv and phone sats, and the spread
navigation signals are just 20 dB under the MPEG data
Not daft at all, Andy. Closely related would be measurements of phase
change between
near the switched load and far away, over a stretch of a few system time
constants.
This would be more challenging, but perhaps doable.
Dana K8YUM
On Sun, Feb 7, 2021 at 3:44 PM Andy Talbot wrote:
> The UK
As an amateur radio guy, I can't help wondering whether I could use this as
a *very* low bit rate channel across the country.
Philip
On Sun, Feb 7, 2021 at 4:44 PM Andy Talbot wrote:
> The UK has a standalone frequency locked grid supply, nominal 50Hz, which
> typically wanders +/- about
The UK has a standalone frequency locked grid supply, nominal 50Hz, which
typically wanders +/- about 0.15Hz RMS over several minutes , with
occasional short-lived excursions out to 0.2 or 0.3Hz. Average number of
cycles per period generally is normalised to 50Hz after a few days.
The typical
Richard’s description is close. They were shipped to the USNO in the mid-80s,
and they didn’t work well. I was the only physicist there at the time, and was
asked to take time off from VLBI and Earth rotation to work on it. That’s how
I entered the timekeeping world.
My contribution was to
Well that was fun looking up the radios and those are very fine prices. I
agree with Bob that the heavier tube receivers will be a fair shipping
charge. But as Martin wisely says come pick it up.
Good luck to some lucky person.
Regards
Paul.
WB8TSL
On Sun, Feb 7, 2021 at 9:50 AM Bob kb8tq wrote:
Hi
There’s six pretty big gizmos there. My local UPS store would charge
me $20 to $30 a box to pack each of them (and barely do an adequate job).
Looking up shipping rates from here to there, each of the 6 packages
would run about $70 to ship. Net would likely be in the $400 to $600 range.
I would pay $250, via PayPal, including shipping, if you would ship the pile.
If not, I would understand. I figured I had to at least give it a shot.
John Franke WA4WDL
4500 Ibis Ct
Portsmouth, VA 23703
> On February 6, 2021 at 10:34 PM Martin VE3OAT wrote:
>
>
>
> Trying to down-size a
Idle speed is simply controlled to an rpm value,
which thus makes it tied, loosely, to the CPU
clock. The phase noise is quite awful, by anyone's
standards, mainly because the parameters measured
to control fuel and spark timing, are noisy.
Tom Holmes, N8ZM
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