[time-nuts] Something with GPS??
paulswedb at gmail.com
Mon May 28 01:23:49 UTC 2012
Ooops one other comment.
You really can't see anything since its a random and spread signal. It all
looks like noise.
I ran into this when I was home brewing a 2201 converter for the missing
antenna that seems to always be the case.
After the prn comes off you can see a signal that lets you adjust things or
tell how good or bad a signal is. Most of the modern rcvrs will not allow
you to get to that point. Its all in a chip. Examples of units that do
alloew you to dig in the austron 2201 and Odetics.
On Sun, May 27, 2012 at 9:19 PM, Tom Knox <actast at hotmail.com> wrote:
> A buffered spectrum analyzer output would be cool. A distribution amp and
> GPS preamp should do it. I wonder if Agilent or Rohde offer a Spec Analyzer
> GPS software package?
> Thomas Knox
> > Date: Sun, 27 May 2012 17:41:57 -0700
> > From: caf at omen.com
> > To: time-nuts at febo.com
> > Subject: [time-nuts] Something with GPS??
> > Last evening my Thunderbolt was losing satellites until
> > none were reported usable. At the same time the
> > K5FX Thunderbolt was down to one or no usable birds.
> > This afternoon I dug out my other thunderbolt, the first
> > one I got. That one had a defective OCXO which I replaced
> > with a 49422. That couldn't get any usable birds either.
> > Now things are back to normal. K5FX is happy and so
> > are both of my Thunderbolts.
> > So -- What happened? Anyone else notice something
> > out of the ordinary? Someone practicing GPS jamming?
> > BTW Is there a spot on the Thunderbolt where I can
> > sample the RF or IF to feed a spectrum analyzer? The signal
> > coming down the coax is too weak to see on my
> > analyzers.
> > --
> > Chuck Forsberg WA7KGX N2469R caf at omen.com www.omen.com
> > Developer of Industrial ZMODEM(Tm) for Embedded Applications
> > Omen Technology Inc "The High Reliability Software"
> > 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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