On Sun, 23 Aug 2015 19:29:29 -0700
Hal Murray hmur...@megapathdsl.net wrote:
What's magic about a crystal as compared to an osc? Is it really easier to
get an odd-ball frequency in a crystal vs an osc?
As Bob already mentioned, there are more frequencies/types to pick from
when going for
On Aug 29, 2015, at 9:48 AM, Attila Kinali att...@kinali.ch wrote:
On Sun, 23 Aug 2015 19:29:29 -0700
Hal Murray hmur...@megapathdsl.net wrote:
What's magic about a crystal as compared to an osc? Is it really easier to
get an odd-ball frequency in a crystal vs an osc?
As Bob
Real time nuts use Comet Cleanser to raise their xtal frequency and a graphite
pencil to lower it. Only crystal cretins would use toothpaste ;-) All my
FT-243's are more acc'rit than those new-fangled silly slezium and rubitinium
oscillators and masery thingamabobs. Geeze, them youngin's
Gee whatever happened to slipping it out of the ol' FT holder and rubbing with
a little toothpaste?
g Don
Bob Camp
Hi
On Aug 23, 2015, at 10:29 PM, Hal Murray hmur...@megapathdsl.net wrote:
kb...@n1k.org said:
There is not a lot to an un-compensated crystal oscillator. Tuning it on
, 23 Aug 2015 08:33:59 -0400
From: Bob Camp kb...@n1k.org
To: gandal...@aol.com, Discussion of precise time and frequency
measurement time-nuts@febo.com
Subject: Re: [time-nuts] Vanguard Ultra precision Golden Oscillator
Message-ID: 86abcf10-fc65-4713-b286-bdc3e33fe...@n1k.org
Content-Type
On Mon, 24 Aug 2015 18:18:14 -0400, you wrote:
If you do drop one into a modern circuit, its worth noting that the crystal
in an FT style holder has another capacitor in it when compared to the model of
a modern (plated electrode) crystal. The air gap is the source of the element.
Net
result
H
I think I'm convinced, I had my doubts to start with and now have enough
more to ensure I follow a different route:-)
Regards
Nigel
GM8PZR
Hi
If they are indeed grabbing anything in that package and re-labeling it, I
would
be very careful. True TCXO’s (full compensation
Hi
I think the lead length on the parts argues against them being pulls from
boards. It does
*not* eliminate the possibility. I’ve seen low cost manufacture that never did
any lead trim.
I would not put it at the top of my list for “fancy oscillator of the year”.
The price is high enough
that
Hi Tim,
Thanks for your comments and I did wonder about the plating, in the photo
for the auction number I gave I couldn't decide if the bottom of the can
was corroded or just badly plated.
Regards
Nigel
GM8PZR
Mainstream TCXO's moved entirely to surface-mount many years ago.
These
From the way the descriptions read, there must be a audiofool in there
somewhere
On Sun, Aug 23, 2015 at 5:16 AM, Tim Shoppa tsho...@gmail.com wrote:
Mainstream TCXO's moved entirely to surface-mount many years ago.
These Vanguard DIP units have to be washed/replated RFE parts. It's a
shame
Hi Bob,
Just the sort of things I was wondering and lot's of questions indeed,
that's why I asked, I didn't want to be the guinea pig:-)
Regards
Nigel
GM8PZR
Hi
A few things I would wonder about:
1) Is it 0.1 ppm over 0 to 50C (or some other range)? If not, what is the
Mainstream TCXO's moved entirely to surface-mount many years ago.
These Vanguard DIP units have to be washed/replated RFE parts. It's a
shame they are so completely relabeled because the original
manufacturer/part number is nowhere to be found, and I'm sure this lost
info would be interesting to
Hi
A few things I would wonder about:
1) Is it 0.1 ppm over 0 to 50C (or some other range)? If not, what is the
temperature stability?
2) Does it run at 3.3V -or- at 5V (pick one) or do they run equally well at
either voltage?
3) Since there is no EFC, is 0.1 ppm the set tolerance? If it’s
The Vanguard ultra precision Golden TCXO, their description not mine:-),
has been listed on Ebay for a while now at various frequencies, and the
0.1 ppm spec caught my eye as a possible replacement for the around 6 or 7
ppm oscillator in a DDS function generator I've been using.
One
Hi
If they are indeed grabbing anything in that package and re-labeling it, I
would
be very careful. True TCXO’s (full compensation network) in that package are
relatively rare compared to the enormous number of “precision XO’s” made
in the same package. The XO’s had no real compensation.
I can't imagine that anyone would trust some 0.1 ppm specification
just because an unknown party stamped that on the case. There are many
sellers of very similarly marked oscillators. They all are selling in
single quantities for about the same price. The market seems to be
hobbyists, especially
Hi
I just spent some “quality time” looking at what Mouser offers in the way of
crystal
oscillators. None of this work was NIST certified. Others could do the same
thing.
You have a number of candidates in the “dip clock” stability category both
in traditional (leaded) and modern (SMT)
Subject: Re: [time-nuts] Vanguard Ultra precision Golden Oscillator
Message-ID: 86abcf10-fc65-4713-b286-bdc3e33fe...@n1k.org
Content-Type: text/plain; charset=utf-8
Hi
A few things I would wonder about:
1) Is it 0.1 ppm over 0 to 50C (or some other range)? If not, what is the
temperature
On Sun, 23 Aug 2015 12:13:47 -0400, you wrote:
Thanks for your comments and I did wonder about the plating,
This looks like the same package the Chinese are selling for the Kenwood
TS-590 to upgrade the already good internal timebase. The reports on them
are pretty good, though few have an
and frequency
measurement time-nuts@febo.com
Subject: Re: [time-nuts] Vanguard Ultra precision Golden Oscillator
Message-ID: 86abcf10-fc65-4713-b286-bdc3e33fe...@n1k.org
Content-Type: text/plain; charset=utf-8
Hi
A few things I would wonder about:
1) Is it 0.1 ppm over 0 to 50C
kb...@n1k.org said:
There is not a lot to an un-compensated crystal oscillator. Tuning it on
frequency is fairly simple. Even for odd frequencies Mouser will happily
sell you a crystal for next to nothing. Toss in a handful of parts and you
have a very respectable oscillator. For a basement
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