Hi all,
I have a 53230A that behaves differently on ch1 and ch2.
With ch2 at DC/1Mohm/postive-slope/1V it triggers ok on my PPS signal and
shows e.g. a pusle-width measurement etc.
The same signal connected to ch1 fails to trigger.
I noticed the Vpp and Vmax/Vmin voltage readings are not
Le 19 nov. 2014 à 09:47, Anders Wallin anders.e.e.wal...@gmail.com a écrit :
Hi all,
I have a 53230A that behaves differently on ch1 and ch2.
With ch2 at DC/1Mohm/postive-slope/1V it triggers ok on my PPS signal and
shows e.g. a pusle-width measurement etc.
The same signal connected
Hi
It also could be a club / group and these could be club design projects. If
they are done from some sort of kit, the level of parts and workmanship may
vary a bit. You do *not* want to buy the first Heathkit I ever built ….
Since the surplus GPSDO’s we buy for a hundred dollars or so mostly
A colleague of mine had seen this exact same behavior on another 53230A.
The problem is a narrow trace right after the CH1 BNC input.
http://www.anderswallin.net/2014/11/53230a-counter-input-channel-fix/
There might be some chemical corrosion going on, since the other counter
that experienced
Perrier
I also requested them offline. Did not receive them.
Regards
Paul
WB8TSL
On Wed, Nov 19, 2014 at 2:17 AM, Jan Boutsen jan.bout...@telenet.be wrote:
Dear Perry:
I would be pleased to receive the PDF and schematics,
Many thanks for your efforts in this matter.
Boutsen Jan PhD
Does anyone have a Fluke 7260a manual? I am able to use mine pretty well
but would like to better understand the interval measuring functions.
--
Brian Lloyd
Lloyd Aviation
706 Flightline Drive
Spring Branch, TX 78070
br...@lloyd.aero
+1.210.802-8FLY (1.210.802-8359)
Hi Brian,
Tucker has it, but for $75,-
http://www.etestmanuals.com/Search.aspx?Mfg=FLUPage=4
K.
2014-11-19 15:56 GMT+01:00 Brian Lloyd br...@lloyd.aero:
Does anyone have a Fluke 7260a manual? I am able to use mine pretty well
but would like to better understand the interval measuring
I have received permission to distribute copies
of my QEX article on this subject from ARRL. In
addition to the article I will include full size schematics
and color photos of the various assemblies. The
design includes an adjustable 10 MHz output amplifier for driving
50 OHM loads. If
Thanks
Paul
WB8TSL
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I recently got a used 53131A. It had the same problem, even though the
BNC connectors are fixed to the front panel.
On Wed, Nov 19, 2014 at 2:18 PM, Anders Wallin
anders.e.e.wal...@gmail.com wrote:
A colleague of mine had seen this exact same behavior on another 53230A.
The problem is a
Morning nuts-
I'm aware several of you use the ADF4002 for a simple small PLL in your
radios. Could any of you share some example bits or maybe even the code
you use during startup? I know what my latch values should be, but I
don't seem to be getting them wrapped in the right control bits.
I
On Wednesday, November 19, 2014, Szeker K. szeke...@gmail.com wrote:
Hi Brian,
Tucker has it, but for $75,-
http://www.etestmanuals.com/Search.aspx?Mfg=FLUPage=4
K.
Thank you. I have been able to find the manual but, as you indicated, only
at a price exceeding what I paid for the unit.
Hi Doug -
Wow. Wonder how many on here remember or know about National's Damn Fast
line, HI. I used them all the time, and, still have a few. 73 - Mike
Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
732-886-5960 office
908-902-3831 cell
-Original Message-
From: time-nuts
Was doing a search for Lucent RFTGm-II-XO looking for alternates to the
$150 solution.
A 10 Mhz mod popped up.
http://telcodata.us/~myself/Lucent-RFTGm-Modification.pdf
Looks simple enough and I have not validated anything.
Regards
Paul
WB8TSL
___
Hi
The 4001 is pretty forgiving of order of load issues. I’ve always just followed
the order in the AD app notes and it’s worked fine.
I’d recommend getting any of the USB logic level scopes and tacking it onto
what you have. The ones I have seen are plenty fast enough for this kind of
Hi
Another alternative would be to AC couple into a NC7SZ125 (using a 0.1 uf cap
and a pair of 100K resistors )and take the output off with a Tee filter (using
two 1.5 uH coils and a 270 pf cap).
Bob
On Nov 19, 2014, at 5:47 PM, paul swed paulsw...@gmail.com wrote:
Was doing a search
I got myself a bus pirate - thanks for bringing that forward in my brain.
I got a lot of great responses thank you everyone.
On Wednesday, November 19, 2014, Bob Camp kb...@n1k.org wrote:
Hi
The 4001 is pretty forgiving of order of load issues. I’ve always just
followed the order in the AD
Hi
Since they were designed to be used inside the feedback loop of an op-amp, they
may not be the best thing to use “stand alone”. Of course if they are free,
it’s hard to beat the price.
Bob
On Nov 19, 2014, at 4:42 PM, Mike Feher mfe...@eozinc.com wrote:
Hi Doug -
Wow. Wonder how
On 11/19/2014 2:47 PM, paul swed wrote:
Was doing a search for Lucent RFTGm-II-XO looking for alternates to the
$150 solution.
A 10 Mhz mod popped up.
http://telcodata.us/~myself/Lucent-RFTGm-Modification.pdf
Looks simple enough and I have not validated anything.
Regards
Paul
WB8TSL
Paul,
Hi
This is a branch thread that never got it’s title changed to drop the KS-24361
part of it. More or less it’s “compare the older KS boxes to the newer ones”.
Bob
On Nov 19, 2014, at 6:03 PM, Dan Rae dan...@verizon.net wrote:
On 11/19/2014 2:47 PM, paul swed wrote:
Was doing a search for
HI
For anything short of microwave multiplication, the 15 MHz output of the
Z3810/11/12 is likely to be “good enough”. The 60 KHz noise hump that may be
from the power brick isn’t going to make it through a PLL going to VHF, so the
only benefit of pulling the brick would be some sort of SDR
I remember the Fast and Damn Fast Buffer Amp data sheet. LH0036? I may
not be remembering the correct part number. I used to have a copy of
that data sheet, as well as another that was labeled DC to Daylight on
the data sheet.
DaveD
On 11/19/2014 2:42 PM, Mike Feher wrote:
Hi Doug -
Wow.
Hi
Looking at the 58503 auctions on eBay, I think that a number of them are simply
Z3801’s out of cell tower scrap operations that have had the 58503 front panel
bits and pieces added to them. Some of the cases have a fairly odd look to them.
Bob
On Nov 17, 2014, at 7:48 PM, Charles
I just saw the picture of the units front panel and it looked the same.
Oh well.
Regards
Paul
WB8TSL
On Wed, Nov 19, 2014 at 7:08 PM, Bob Camp kb...@n1k.org wrote:
Hi
This is a branch thread that never got it’s title changed to drop the
KS-24361 part of it. More or less it’s “compare the
I think those devices were in the same databook that had a page in the back
of the book, containing only the text
This page is as blank as a salesman's memory
The person who did the final editing on that issue had a rare sense of
humor.
Dave M
Dave Daniel wrote:
I remember the Fast and
Hi
Lucent has been putting GPS based Radio Frequency Timing Generators (RFTG) into
cell sites for a long time. They all have the 15 MHz and pps outputs in common.
Lucent also seems to like one paint color and an approximate size. For what
ever reason (because they can?) the model numbers and
Hi
After some more digging, the date convention used by the club or what ever it
is: year - month - day. I sort of doubted that was the case, but indeed it is.
The GPSDO has a design date of November 6th 2014. They are pretty much just
out of beta test (if that) at this point.
Bob
On Nov
Hi
After some more digging, I was more than a bit high on my kit cost estimate.
The MV89’s are $5-$6 on the market in China. The PCBs as a set are under $3.
Best guess is that the kit (if that’s what it is) sells for under $25
un-assembled.
Bob
On Nov 19, 2014, at 7:37 AM, Bob Camp
On 11/19/14, 3:59 PM, Dave Daniel wrote:
I remember the Fast and Damn Fast Buffer Amp data sheet. LH0036? I may
not be remembering the correct part number. I used to have a copy of
that data sheet, as well as another that was labeled DC to Daylight on
the data sheet.
DaveD
On 11/19/2014 2:42
And I am the happy owner of 4 or 5 of the $25 RBs. Hey they are old but you
can recover them with the old heatgun trick. That said glowing things like
those do tend to wear out. I could see why they moved away from them.
On Wed, Nov 19, 2014 at 8:15 PM, Bob Camp kb...@n1k.org wrote:
Hi
Lucent
I know I have some numbers of chroma demod chips as I recall. Picked up in
a flea market special along with other more useful chips.
I absolutely have the LH033 buffers. Fet input and like lots of power. Have
used them as frequency buffers.
Super easy to use. Real chips
Regards
Paul
WB8TSL
On
My fonts are going amuck
On Wed, Nov 19, 2014 at 9:09 PM, paul swed paulsw...@gmail.com wrote:
I know I have some numbers of chroma demod chips as I recall. Picked up in
a flea market special along with other more useful chips.
I absolutely have the LH033 buffers. Fet input and like lots of
Apparently there is some interest in this technique.
So far I have 35 requests and still counting.
Please if you do want a copy send me an email
OFF LIST to johncr...@aol.com. Requests posted on
list are too hard to find and too hard to make
into a master address list.
In addition to the basic
Hi John,
I would be interested in your article.
May I suggest that if you do not have a means of putting it ALL into
one PDF, let me know as I have scanning ability as well as publishing
into the PDF format.
That way it could be put on to a server that KO4BB maintains foir all
the Timenuts
See:
http://newsoffice.mit.edu/2014/portable-atomic-clocks-1112
Any comments?
Rick Karlquist N6RK
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Hi Rick,
They did not mention the complexity of the laser system they needed,
especially considering that the optical bench of a fountain isn't all
that small, and also because they want to de-tune lasers. While they
seems to have an idea, they didn't touch on that subject.
Nice to see that
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