>
> david-tay...@blueyonder.co.uk said:
>> Although, IIRC from discussions with Dave Hart, the Windows port can
>> only
>> accept the normal positive-going signal on the DCD line. The devices
>> I've
>> tested all have positive going signals. Pulse width is typically 100 or
>> 200
>> millisecond
I did an article here: http://www.vk2hmc.net/blog/?p=583
About 1/2 way down the difference between TX/RX and control RS232 signals is
explained.
--marki
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf
Of Mark Sims
Sent: Monday, 19 Augus
david-tay...@blueyonder.co.uk said:
> Although, IIRC from discussions with Dave Hart, the Windows port can only
> accept the normal positive-going signal on the DCD line. The devices I've
> tested all have positive going signals. Pulse width is typically 100 or 200
> milliseconds, with a few re
From: Chris Albertson
[]
Another problem is that people might like to also run NTP server using
their Thunderbolt and the Windows OS that LH uses is a very poor choice for
NTP, so you'd need a second computer. Best to put both on a little ARM
powered board.
[]
The point is that this only makes it cheaper. It is still a PC running
Windows in some other room. I think what is wanted is a way to have the
Thunderbolt "on-line" so the status shows up wherever you like. Also those
old PC notebooks burn more power than you think. Not nearly as much as an
ol
List,
I have no problem with someone porting LH to any
device of their choice.
But at the Huntsville, AL hamfest this last weekend
there were a number of fully functional laptops for $29. I didn’t check what OS
they were using.
Sure they are about as old as dirt however they
are great for g
You might say that if you need to monitor the performance of the
Thunderbolt at all, maybe "get a life". The little boxes work just as
well when you are not looking. But assuming we all are anti-social geeks
who like to look at ADEV plots and the like and worry if our equipment is
to close to a
I have been looking at SNMP intensively for the last 2 weeks. I came to
appreciate the warning I saw on one of the first documents I read about it:
the protocol is simple although the implementation is not :) While I am
sure you can run a useful subset of SNMP on a small machine, there are much
sim
It has the normal Rakon TXCO.
Joe Gray
W5JG
On Mon, Aug 19, 2013 at 12:45 AM, "Björn" wrote:
> Hi Bob & Joe,
>
> The CMC Allstar was a high quality 12 channel L1 receiver. There was even
> an option for the DGPS version to have an onboard OCXO. Joe, does your
> have that or the ordinary Rakon
Sorry for confusion caused by my using the L H words :-) it's called
Thunderhead and is a lot cheaper than some solutions if you just want a desktop
monitor or can hack an iPaq handheld into your Thunderbolt's case.
Details including complied EXE for PocketPC and source code is
herehttp://fuzz
Sending GIF images is not a good idea for several reasons
1) If the display updates once per second, you'd need to send an entire GIF
image every second,
2) What if the user has a very small screen, like a cell phone, or he has a
large screen? The GIF will either be the wrong size or you need a wa
I can imagine creating a screen image as a jpeg and making it available via the
web server.
I have done that before for something else (a headless device.)
Didier KO4BB
Chris Albertson wrote:
>On Sun, Aug 18, 2013 at 10:11 PM, Eric Williams
>wrote:
>
>> Would be nice if someone did a Linux po
While I am at it, I will put a PPS stretcher and RS-232 driver on the same
board since a number of those lose TBolts are used for NTP. I should be able to
do that for the same price.
It seems that 25 ms positive going should be sufficient?
I have created a page to keep track of what I have promi
hol...@hotmail.com said:
> There is also one more available RS232 input pin on the chip. Any
> preferences for RTS or DTR? There is a jumper for powering the board from
> the RI pin (pin 9) of the RS-232 connector.
I have a few PCI cards with jumpers to provide either +5 or +12 to pin 9.
(Be
From: Hal Murray
Yes, this is right. But watch the polarity. It is easy to get it wrong.
In RS-232 the controls pins are different from the data pins.
The reference implementation of ntpd can accept either polarity.
It's one of the fudge options.
=
Although, IIRC from
On Sun, Aug 18, 2013 at 10:11 PM, Eric Williams wrote:
> Would be nice if someone did a Linux port of LH that could run on a
> Raspberry Pi or something, then you could embed it into your T-Bolt
> installation. Plug in a HDMI monitor if you want to look at it all the
> time, or come in remotely
> Yes, this is right. But watch the polarity. It is easy to get it wrong.
> In RS-232 the controls pins are different from the data pins.
The reference implementation of ntpd can accept either polarity.
It's one of the fudge options.
--
These are my opinions. I hate spam.
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