,
... MartinVE3OAT
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. Post more pictures!
73,
... MartinVE3OAT
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I always thought crystals with dislocations were used to mark the band
edge frequencies.
... MartinVE3OAT
- - - - - - - - - - - - - - - - - -
On Sun, 22 Apr 2018 11:34:30 -0600 djl wrote :
>
> Darn. maybe not grain boundaries, but dislocations? or both?
Hi, Doug,
How is your 8161 doing now? Still synced properly? Should I bring my
8164 up from the basement? I was so disappointed when WWVB changed
their modulation. Thanks for any encouragement.
73,
... MartinVE3OAT
On Wed, 11 Apr 2018 16:28:41 Doug Millar wrote :
> Hi, My Spectra
the network timing information was in "line 6", though I might
not remember accurately. There was all kinds of other information in
those lines at the top, although only technical people knew about it
because most TV sets were adjusted so you couldn't see them.
73,
... Marti
ost always at least 7 birds in
view at any time and the setup seems to work fine.
You can engineer your solution for optimum results but I would guess
that, as long as you are above a certain minimum level of signal for
the receiver, you will get reasonably good performance.
... Martin
Attila,
Have you thought of visiting the Greenwich observatory just south of
London? I don't know if they have tours or when they might be open,
but it is the birthplace of GMT.
I would join you if I could but I am in Canada. Have a good visit there!
... MartinVE3OAT
On Wed, 26 Apr
Bob, if you had your watch set to European time, could the fact that
Europe changes to daylight time about two weeks after we do in North
America have anything to do with it?
... Martin VE3OAT
Bob (KB8TW) wrote :
On a side note, my Citizen WWVB watch missed the change to DST this year.
I
the ellipse and marvelling at the sudden changes of direction as the
phase of the received signal changed. It was my introduction to
Doppler shifting of ionospherically propagated HF signals.
73,
... Martin VE3OAT
On 08/01/2017 01:36, Bill Hawkins wrote:
Had one of those before downsizing. Very
). And it could probably benefit from a proper
RF/IF alignment (I have never bothered to do this).
The unit is too big and heavy to ship by any normal means, so "local
pick up only". However, I could meet you "half-way", provided it is
within 200 km of Ottawa, Ontario. Free to a goo
Hi, Brooke,
Very interesting stuff. Thanks for the link. Question - Is any of
the older chirp sounder equipment now available on the surplus
market?? Thanks.
... MartinVE3OAT
On 02/07/2016 12:00, time-nuts-requ...@febo.com wrote:
Hi Mike:
For quite a while I was heavily
OK at least. Are you using an active antenna and does the unit
provide the required voltage for it? Sorry if you have already
checked that.
... MartinVE3OAT
Ulli wrote :
At least, i saw 1 or 2 satellites from time to time.
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the instantaneous phase of the signal very
carefully. As a result the spectrum of an MSK signal is quite
distinct from that of an ordinary FSK signal. As I recall.
73,
... MartinVE3OAT
Ken W7EKB wrote :
As I understand it from back in the 1970s when I was first working on this
sort of thing
which receiver it was, but I think one of the old
commercial WWVB receivers used a crystal as the tuning element.
... Martin VE3OAT
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to the official unit.
Sounds like you have a really neat project.
... Martin VE3OAT
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effects were noted, probably due to minor disturbed geomagnetic
conditions.
73,
... Martin VE3OAT
Antonio I8IOV wrote :
Hi all,thanks for your replies.Geomagnetic storms are known
to produce easily detectable effects at earth, sometimes dramatic
( http://en.wikipedia.org/wiki
Bert Kehren wrote :
The thunderbolt is one of the best timing devices but not
for frequency, if you want high resolution.
Bert,
Would my old HP Z3801A be better for frequency than the Thunderbolt?
Could you put some quantitative difference to it?
Thanks,
... MartinVE3OAT
Bert,
I don't know about 1.6 GHz but I can tell you with some authority that
before RTV/silicone is fully cured it is highly conductive to energy
at 60 Hz.
... Martin VE3OAT
Bert wrote :
Am experimenting with small low cost GPS antennas and am
considering as an alternative RTV/silicon
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