06/06/2012 23:47
Just to thank everyone for the warm welcome and splendid advice, I
couldn't have asked for anything more. A great bunch of boffins (in
the nicest possible way ;)) I have just ordered from a well known
auction site's China Town a Thunderbolt kit and will be looking
forward to
As for the spectrum analyzer, shipping is the killer. I picked up a nice
condition HP 8566B for around $USD 900 but it would blow through your budget
real quick to ship there. Keep an eye out on eBay for units listed to end on an
odd hour and set snipes.
Peter
On Jun 6, 2012, at 6:53 PM,
Hi
For your immediate need, a Thunderbolt sounds like the ideal
solution. It will give you a very accurate reference to sort out
your test gear and likely good enough phase noise for most of the
rest of what you want to do. Once you get into the microwave stuff,
plan your PLL's properly
Hi
You should be able to daisy chain a number of devices off of a TBolt. More or
less, you run a BNC cable with a bunch of Tee's on it to distribute the signal.
The end of the cable should get a 50 ohm load. There are better / fancier /
more expensive ways to do it using distribution
On Tue, Jun 5, 2012 at 5:20 PM, Chris Wilson ch...@chriswilson.tv wrote:
I have thought of something I am unable to find an answer for via the
normal Googling, etcetera. When I get my GPS locked standard will it
be able to feed several items of test equipment simultaneously? IE,
say a sig
Ditto.
I daisy chained devices together before I got a 10 Mhz distribution amp. So
long as I didn't make any changes to the cabling while making critical
measurements it seemed to work okay.
Regards
Mark Spencer
--
On Tue, 5 Jun, 2012 8:28 PM EDT Bob Camp
TAPR released the TADD-2 in March I believe; I just saw them demo it at Dayton.
http://www.tapr.org/kits_tadd-2.html
-Chase
W4TI
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On Sun, 03 Jun 2012 18:16:15 -0400, Bob Camp wrote:
Hi
As long as it shows rev E or rev D it's likely a later version unit.
The date code on the OCXO is the best indicator, but even that's not
100%. As long as it's one made after about 2002 you will have a good
one.
Search on Eb..: 10mhz
Hi
If you are trying to do microwave work, phase noise is going to be an issue no
matter how you do it. A lot of the design effort always goes into a low noise
oscillator chain in that sort of gear. For HF gear, phase noise may not be
quite as big an issue. A lot of rigs pretty much ignore
03/06/2012 19:09
Thanks for the great replies! My immediate need is to check some used
test equipment I have bought, a Racal dana 9908 counter and a Marconi
2019A signal generator. They don't agree with one another! I was going
to get a Thunderbolt unit and PS, but my friend mentioning noise
Sent from my iPod
On 2012-06-03, at 2:19 PM, Chris Wilson ch...@chriswilson.tv wrote:
03/06/2012 19:09
Thanks for the great replies! My immediate need is to check some used
test equipment I have bought, a Racal dana 9908 counter and a Marconi
2019A signal generator. They don't
and money on time nuts
pursuits than on amateur radio.
Regards
Mark Spencer
VE7AFZ
--- On Sun, 6/3/12, Mark Spencer mspencer12...@yahoo.ca wrote:
From: Mark Spencer mspencer12...@yahoo.ca
Subject: Re: [time-nuts] GPS and Rubidium frequency standards and noise
question (newbie).
To: Chris
Hello Chris,
You are on the right track.
I have had the Trimble Thunderbolts (3 each) for about 5 years now.
Just to be sure everything compares favorably
I use Lady Heather PC software to monitor their performance (de KE5FX
website)
Stay tuned to this reflector, lotsa interesting
On Sun, Jun 3, 2012 at 11:19 AM, Chris Wilson ch...@chriswilson.tv wrote:
03/06/2012 19:09
...My immediate need is to check some used
test equipment I have bought, a Racal dana 9908 counter and a Marconi
2019A signal generator. They don't agree with one another! I was going
to get a
Hi
For your immediate need, a Thunderbolt sounds like the ideal solution. It will
give you a very accurate reference to sort out your test gear and likely good
enough phase noise for most of the rest of what you want to do. Once you get
into the microwave stuff, plan your PLL's properly and
Hi
For your immediate need, a Thunderbolt sounds like the ideal
solution. It will give you a very accurate reference to sort out
your test gear and likely good enough phase noise for most of the
rest of what you want to do. Once you get into the microwave stuff,
plan your PLL's properly
Hi
As long as it shows rev E or rev D it's likely a later version unit. The
date code on the OCXO is the best indicator, but even that's not 100%. As long
as it's one made after about 2002 you will have a good one.
Bob
On Jun 3, 2012, at 5:58 PM, Chris Wilson wrote:
Hi
For your
I am looking to get a frequency standard for my amateur radio shack,
initially for verifying test gear readings, but later as a standard
to lock receiver and transmitter oscillators to. I was going to buy
a GPS frequency standard but a friend warned me these may have noise
issues when
If you want a frequency reference. There is nothing better than GPS. In
fact it you bought a Rubidium you would still need the GPS so you could
calibrate its frequency.
Some GPSes might be noisy but then you can lock a good double oven crystal
oscillator to it and have what they call a GPS
On 6/2/12 2:57 PM, Chris Wilson wrote:
I am looking to get a frequency standard for my amateur radio shack,
initially for verifying test gear readings, but later as a standard
to lock receiver and transmitter oscillators to. I was going to buy
a GPS frequency standard but a friend
Chris,
To answer your question regarding using a Rubidium standard as a frequency
reference
for your Transverters.
GPS really has nothing to do the main requirement regarding Phase Noise and your
Transceivers. But the 10MHz oscillator inside the Rubidium standard is the item
that will be the
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