OK now I am on a real keyboard. the ole iphones a bit small.
I was indeed aware that the subs use msk 20-50hz as I have measured in the
past.
But avoided the details on the small keyboard. I have also used several of
the military radios when I was in the Navy. Far to many years ago.
NAA thats
On iPhone
Yes but those stations are fsk so the offsets an issue
We may assume the transmitter is accurate
But how accurate?
Then the fsk generator
On Saturday, August 9, 2014, Kenneth G. Gordon kgordon2...@frontier.com
wrote:
On 9 Aug 2014 at 19:17, paul swed wrote:
Ken
All of the phase
On 10 Aug 2014 at 6:24, paul swed wrote:
Hello again, Paul. Thanks for replying. Please see below.
On iPhone
Yes but those stations are fsk so the offsets an issue.
As I understand it from back in the 1970s when I was first working on this
sort of thing, the modulation is not FSK, but MSK
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-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Kenneth G. Gordon
Sent: Sunday, August 10, 2014 12:27 PM
To: paul swed; time-nuts@febo.com
Subject: Re: [time-nuts] VLF Phase-tracking receivers.
On 10 Aug
As I recall (it was a long time ago), it was called Minimum Shift
Keying and used the minimum frequency shift (FSK) that would permit
reliable detection of a bit (mark or space) at the given information
rate. Something like 25 Hz shift at 50 baud keying. But it was
necessary to control the
On 8/10/14, 9:26 AM, Kenneth G. Gordon wrote:
On 10 Aug 2014 at 6:24, paul swed wrote:
Hello again, Paul. Thanks for replying. Please see below.
On iPhone
Yes but those stations are fsk so the offsets an issue.
As I understand it from back in the 1970s when I was first working on this
sort
On 8/10/14, 11:54 AM, Mike Feher wrote:
Unless on what you were working on it had a different meaning, MSK means
Minimal Shift Keying. It is still a PSK modulation of any order, however
the transition between significant phase locations is not instantaneous,
but, shaped in various ways to smooth
On 10 Aug 2014 at 15:24, Martin VE3OAT wrote:
As I recall (it was a long time ago), it was called Minimum Shift
Keying
You're correct: I just looked it up.
and used the minimum frequency shift (FSK) that would permit
reliable detection of a bit (mark or space) at the given information
On 10 Aug 2014 at 19:00, Jim Lux wrote:
It can also be FSK..
but it's essentially the narrowest band simple modulation that is
constant envelope.
As I said, back in the 1970s, the Navy installed special equipment to enable
phase-stable output.
Dunno the exact details, but that was what I
Hello, I'm new here, but would like to get some advice, if possible.
I have been going through my inventory here of items which were given to
me in an estate some time ago.
Amongst many other things, I find three Tracor or Textran 599 receivers.
One 599-CS with its manual, a 599 (no suffix)
Ken
All of the phase tracking receivers no longer work due to the new bpsk wwvb
modulation.
Certainly if you need accuracy any of the GPSDOs out there are better then
the old wwvb receivers.
I have a 599 and will hope that the project I have been working on for far
to long will allow it to track
Hi Paul:
Are the phase tracking receivers able to receive any VLF stations (like used by
the military)?
Have Fun,
Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
paul swed wrote:
Ken
All of the phase tracking
Some can. But the big mega power ones here run FSK or in reality MSK about
25-50Hz from what I can tell. The other comment I have is that there no
published data on the stability or reference. I could speculate its good
but have no idea actually.
Would have to build a receiver to figure it out.
On 9 Aug 2014 at 19:17, paul swed wrote:
Ken
All of the phase tracking receivers no longer work due to the new bpsk wwvb
modulation.
Hello, Paul. Yes. I knew that WWVB had switched to BPSK, but these
receivers were specifically designed to tune to any of the VLF stations
between 3 and
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