Wow! Great info.
The 5v mag mount antennae are working, but the receivers are cycling between
2-D and 3-D (5 or 6-bird) modes. With the 26dB trimbles, I suspect I'm loosing
~5db in the 30ft of crumby RG-5, and a little pattern with my rain-gutter
backplane.
I don't have too much arial
Hi
The antenna gain is likely *plenty* for that short a run of coax.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Chris Hoffman, KG6O
Sent: Tuesday, July 17, 2012 11:16 AM
To: time-nuts@febo.com
Subject: Re: [time-nuts]
Yes, I agree, it is not an antenna gain problem... it is better to find a
way to draw the constellation like LH for the TBolt. This way you can find
out if the antenna is free or not from obstructions.
On Tue, Jul 17, 2012 at 5:25 PM, Bob Camp li...@rtty.us wrote:
Hi
The antenna gain is
What advice does anyone have on building/finding cheap [visual?] comparison
devices to display or detect a timing [lesajo?] from my 10MHz sine wave ports?
Further, what timing/health metrics could/should I be aware of and/or looking
for?
I do not want to spend good money on another
The first step is: use any dual trace oscilloscope and put on channel 1 the
first 10MHz source and on channel 2 the other. Trigger from channel 1 and
see if and at what speed (cycles/second) the other channel walks.
On Tue, Jul 17, 2012 at 6:09 PM, Chris Hoffman, KG6O cq.k...@gmail.comwrote:
Of course the dual trace scope will do this. But the OP asks for
something cheaper. I think you can do the same thing as the scope
with a mixer. Mix the reference and unknown 10Mhz signals then
use a low pass filter. The output is the beat which if everything
is perfect is a DC voltage. But
Hi
A dual input counter is probably your best tool. Something like a 5335 or
5334 would be reasonably cheap. Maybe compare edge crossing time to a pps.
Mux all of your outputs and compare them one at a time. You will have data
resolution at 1x10^-12 in under a day.
For time slips (as in
Timenutters--
Along the lines of splitting time into small increments, there
is an interesting article in the May 2012 issue of the
IEEE Spectrum Journal.
It describes experiments with what I am calling cork-screw
time-shift phasing modulation or orbital time-delayed angular
momentum phasing
To exploit an angular momentum modulation we need a demodulator able to
recognize that angular momentum... nowadays our demodulators cannot go
beyond amplitude, phase and their combination. Maybe I'm missing
something...
On Tue, Jul 17, 2012 at 6:59 PM, Michael Baker mp...@clanbaker.org wrote:
Mr. Sproul: I really like your solution! Do you mind emailing me code and
schematics?
Bob, you right: I should be watching slips with a PPS-actuated buffer. For now,
I don't have the resources for a ready-made dual-input counter, but the
strangest/best things seem to show up at the flea market
Are we sure it wasn't the April issue?
Isn't this just phase modulation?
Azelio Boriani
To exploit an angular momentum modulation we need a demodulator able to
recognize that angular momentum... nowadays our demodulators cannot go
beyond amplitude, phase and their combination. Maybe I'm
Maybe: the experiment was made in March...
Anyway, as usual, first I commented and then read the article and, yes, I
was missing something but it is not so clear IMO. They say to have used 2
Yagi antennas at the receiver side and 1 Yagi and 1 modified parabolic dish
at the transmitter. Then by
On 07/17/2012 11:32 PM, Azelio Boriani wrote:
Maybe: the experiment was made in March...
Anyway, as usual, first I commented and then read the article and, yes, I
was missing something but it is not so clear IMO. They say to have used 2
Yagi antennas at the receiver side and 1 Yagi and 1
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