it looks like somebody already made a decoder for a wwvb like
transmission, see here:
Performance Analysis and Receiver Architectures of DCF77
Radio-Controlled Clocks
*
Daniel Engeler
Daniel Engeler
Zuhlke Engineering AG, Schlieren, Switzerland.
IEEE transactions on ultrasonics,
Hi
Next layer to this onion is that the low(er) frequency signals out of the mixer
have slow(er) edges. There has been a lot of discussion on the list in the past
about Dual Mixer Time Difference (DMTD) setups. The fast answer is in a paper
by a gentleman by the name of Collins. on how to do th
On Tue, 18 Aug 2015 21:49:50 -0700
wrote:
> I'm trying to figure out what change if any to a cavities resonant
> frequency would be when measured with ambient air pressure and then with
> a vacuum inside. There will not be any pressure on the cavity when under
> vacuum as the outside of the cavit
Dear John & Magnus,
thank you very much for your detailed explanation. I realize
that the averaging topic is much more complex than I thought
- it certainly gives me something to think about :-) I never
thought in terms of noise bandwith in this application,
thanks for putting me on this trac
Hi ,
I think the Regulator Board should still be questioned.
To calibrate the +20 V,it is necessary to use an Extender Board because the
calibration trimmer is not accessible with the card fitted normally.
I have used the extender HP built for service model 5060-0049. After alignment
I could see
I've been trying to locate a manual for the MtronPTI M9101 series GPSDOs,
an M9103 series manual would probably also be ok.
There are references and links online to a PDF manuals section on the
MtronPTI web site but those links just bring up errors and they seem to have
removed everything o
On 8/19/15 10:12 PM, Hal Murray wrote:
t...@radio.sent.com said:
I think that Menlo Park is somewhat under 300 NM (nautical miles) from China
Lake (depending on exactly where the test was located), and the expected
interference range was about 252 NM. So you might have been at the edge of
the a
In message <1440039768.738221.360877705.34d2f...@webmail.messagingengine.com>,
Bill Byrom writes:
>I don't have an HP5065A and can only see the portion of the schematic
>you copied.
The manual is on K04BB if you want the full monty.
>Here is
>what I can surmise from your measurements (
> What sort of gear would I need to detect a local jammer?
A GPS receiver where you can get AGC data, to see if the power in the GPS
band increased - or a SDR-radio, like the SDR-RTL at sub $20 or a
commercial GPS jamming detector.
--
Björn
___
t...@radio.sent.com said:
> The term "BNM" also initially confused me. It appears to be "Broadcast
> Notice to Mariner"
Thanks.
There was another similar event Wed morning:
08:15-10:00 UTC, Wed
01:15-03:00 PDT
and a shorter one from:
13:30-14:00 UTC
06:30-07:00 PDT
--
These are my op
The term "BNM" also initially confused me. It appears to be "Broadcast
Notice to Mariner", a report produced by the US Coast Guard with
important warnings for ship navigation.
http://pdept.cgaux.org/Documents/Active/NS/LocalNoticeToMariners/lnm14022011.pdf
Detecting GPS interference is an interest
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