Maybe a bit quick off the mark here.
They definitely used the DDS technique with their later telecom modules, but
thinking about it, I'm now not sure the 2200 or 2201 used this.
Apologies for any confusion.
Rob
-Original Message-
From: time-nuts-boun...@febo.com
Hi again, Chris;
The HV at the end of the model number indicates that the unit is capable of
handling high voltage (up to 5V - TTL level) on the sync channel. The
0.7/1.0 Volt switch is to provide a bit of extra gain for long cable runs.
Aside from the HV difference, the unit appears to be
It's nice to have something to do.
Sorry to hear of the 'bad' magic but, at least, it's not the same problem
all over again.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Frederick Bray
Sent: Sunday, May 19, 2013 12:11 PM
To:
From: Chris Wilson ch...@chriswilson.tv
To: time-nuts@febo.com
Subject: Re: [time-nuts] Distribution amps for Thub=nderbolt and David
partridges divider box?
Hi again, Chris;
The HV at the end of the model number indicates that the unit is
capable of
handling high voltage (up to 5V - TTL level)
These are handy little boxes for the money. Unfortunately the outputs are
not isolated from each other (galvanically and signal-wise) so be mindful
that if you connect/disconnect one port, the adjacent port will be
affected. Unless you need to, it is probably best to wire all 3 inputs in
parallel
On 19/05/13 19:12, Dave M wrote:
Yes... .Jump on it!
Seems to be a good price for it. If I needed a DA, I'd buy it in an
instant.
I just grabbed a pair! (After missing out on the Soekris boxes!)
They should go well with the A2100 Timing Receivers that are currently
sat in customs, and the
Hi!
I am struggling trying to convert my Acutime's PPS signal from RS422 to
RS232 for NTP use.
I am using this converter: http://www.dpieshop.com/quatech
-sscvt500n-rs232-to-rs422485-serial-converter-p-282.html and I connected
- Port A (T+) to R+ on the converter
- Port A (T-) to R- on the
On 19/05/13 19:12, Dave M wrote:
Yes... .Jump on it!
Seems to be a good price for it. If I needed a DA, I'd buy it in an
instant.
I just grabbed a pair! (After missing out on the Soekris boxes!)
They should go well with the A2100 Timing Receivers that are currently
sat in customs, and
Without a full schematic diagram about the only thing I can ask is if
yuremembered that for RS232 the control and data signals are reversed.
For rs-232 Tx and Rx use a negative (low) for a logic one. But DCD uses
the other convention with a positive meaning one.. So if you can see the
serial
Anyone got any Time Nut quality items at the MIT fleamarket today ?
Stan, W1LE Cape Cod
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On 5/19/2013 5:03 PM, Miguel Barbosa Gonçalves wrote:
- Port A (T+) to R+ on the converter
- Port A (T-) to R- on the converter
- PPS+ to T+ on the converter
- PPS- to T- on the converter
On the RS232 part of the converter
- TXD (pin 3) to computer pin 1 (DCD)
- RXD (pin 2)to computer pin 2
No dia 19/05/2013, às 22:44, Mike S mi...@flatsurface.com escreveu:
On 5/19/2013 5:03 PM, Miguel Barbosa Gonçalves wrote:
- Port A (T+) to R+ on the converter
- Port A (T-) to R- on the converter
- PPS+ to T+ on the converter
- PPS- to T- on the converter
On the RS232 part of the
Not me. IMO, the pickings were pretty slim. I think a number of ventors
opted for Dayton.
-John
==
Anyone got any Time Nut quality items at the MIT fleamarket today ?
Stan, W1LE Cape Cod
___
time-nuts mailing list --
I grabbed a real nice Leitech distribution amplifier - but I took it home
and it was empty!
I walked back and returned it for a refund, but the seller said he had a
whole stack in his office. I was gonna post to the list when I sort it out
- it was a real bargin, and he said he might be willing
Usually this type of failure comes from the startup section of the
power supply. Try to locate the resistor and the electrolytic
capacitor of the driver IC. The resistor (in the 68K - 390K range)
connects the V+ bus to this low voltage capacitor and gives the
startup voltage.
On Sun, May 19, 2013
Hi folks, I recently picked up a Symmetricom SA.22c rubidium oscillator.
According to the datasheet, it outputs a square wave with programmable
frequency (well you can pick among some set of frequencies).
I'd like to build up a small circuit locked to the square wave output which
outputs a 10MHz
I snatched one for $20 and they are now $59 or best offer.
On Sun, May 19, 2013 at 11:18 AM, Bob Camp li...@rtty.us wrote:
Hi
There are a number of things that a Net4501 could be used for….
Bob
On May 19, 2013, at 10:45 AM, Jason Rabel ja...@extremeoverclocking.com
wrote:
Just a
Thanks for the info. I had a general idea that it might be something
like this, but it's helpful to know what to look for. I won't have time
to dig into it until next weekend. Unfortunately, HP's documentation is
not generally available so it may take some exploring.
On 5/19/2013 4:02 PM,
I may not have mentioned that I think I figured out the underlying
problem with this OCXO lies with the trimpot in the oven control
circuit. (I believe that someone mentioned this as a possibility, so I
can't take credit for finding it on my own.) Some of the other things I
did helped, but
I got 2
Sent from mobile
On May 19, 2013, at 6:07 PM, Didier Juges shali...@gmail.com wrote:
I snatched one for $20 and they are now $59 or best offer.
On Sun, May 19, 2013 at 11:18 AM, Bob Camp li...@rtty.us wrote:
Hi
There are a number of things that a Net4501 could be used for….
For Andy -
It is far easier in terms of bandwidth and power required to distribute sine
waves, and that is the method most used. The sine wave is more easily
transported via coax for long distances with no distortion issues.
I suggest you terminate the output of your oscillator in a nice 6
If you only want a house clock from the Rb osc then why go to all the
trouble? Just put together a low pass filter to the Rb squre wave and get
rid of the higher harmonics above 10 Mhz ... that should give you a clean
10Mhz wave based on the Rb performance
jerry
-Original Message-
From:
Seller obviously figured out that somebody feels they are of value and adjusted
the selling price to see what he can squeeze out of them. I'd suggest making a
$20 offer if you want to try to drive the price back down to what is reasonable
Message: 6
Date: Sun, 19 May 2013 18:07:51 -0500
From:
We should plan a Time-Nuts BOF lunch after the next flea.
Saw little TN gear @ Dayton save one Efretom RBI time base for $1800 and a few
10811s of dubious quality for $50 ea. the dents put me off gambling on one
since I was given or the afternoon before! ;)
On May 19, 2013, at 21:50, paul
All,
We will be moving to southern California in the
near future.
My question if for people who live in that area is
do you need to do additional shock mounting for OCXO’s because of the ongoing,
usually minor, earth tremors that take
place?
I will be running two of the Lucent units and
Good news at least the first EGG RB fired up and after adjusting the
synthesizer is locked very nicely. Letting it bake and figuring out the dip
switches. They were wrong or purposely offset. Hard to say. Lamp voltage is
12 VDC I suspect thats quite a good number if compared to the old FRS and
sandee...@yahoo.com said:
My question if for people who live in that area is do you need to do
additional shock mounting for OCXOâs because of the ongoing, usually minor,
earth tremors that take place?
I wouldn't worry about it. If you have gear you are concerned about, a bit
of foam
That is an interesting question. I am in the greater LA area and have
several pieces of test gear with OCXO's. I have never taken any
precautions other than making sure that the gear can't fall off the
shelf or bench. Then again, I may not be doing things to time-nuts
standards.
There are
Even in an active fault area the unit will see more mechanical vibration
comming fomr the building cause by walking around and the wind then by
Earthquakes. OK, every few years there might be a few seconds of ground
movement. But most of the constant stuff is very local, within the
building.
There were two auctions... the $59 ones are new, the others lightly used.
Now there are only the new ones left.
On Sun, May 19, 2013 at 7:10 PM, Tom Clifton kc0...@yahoo.com wrote:
Seller obviously figured out that somebody feels they are of value and
adjusted the selling price to see what he
On Sun, May 19, 2013 at 7:10 PM, Tom Clifton kc0...@yahoo.com wrote:
Seller obviously figured out that somebody feels they are of value and
adjusted the selling price to see what he can squeeze out of them. I'd
suggest making a $20 offer if you want to try to drive the price back down
to
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