A while back I picked up a couple of what Fair Radio was calling data line
filters. They have a six-digit Nixie time display (hours, minutes, seconds)
and apparently decode and display some kind of analog time code (IRIG, maybe?).
It was made sometime in the early 70's; it's wire-wrapped with
Hi,
From: Steve Byan steveb...@verizon.net
NSN 6625003684180
==
NSN: 6625-00-368-4180
INDICATOR, DIGITAL D
Part No: 0N194800
Price Range: n/a
Delivery Range: n/a
Mfr/OEM/Agencies: JOINT ELECTRONICS TYPE DESIGNATION SYSTEM, NATIONAL SECURITY
AGENCY
==
Bye,
Jean-Louis
Hi
Maybe you could call them up and ask for information on the system they went
with….:)…
Sounds like a great way to wind up on a no fly list.
Bob
On Dec 11, 2011, at 11:40 AM, Jean-Louis Noel wrote:
Hi,
From: Steve Byan steveb...@verizon.net
NSN 6625003684180
==
NSN:
I doubt that you will ever find a manual or schematics, but you
should be able to decipher enough of the circuitry to figure out how
to fire it up and talk to it. The digits should be arranged in either
a counter or individually addressable. If it's a counter, you should
be able to find a 1
I looked at your first post again and noticed there were apparently
lots of TTL circuitry, so it could be an IRIG code receiver, and you
should be able talk to it. If you don't have a source readily
available, you may be able to fool it into responding a little to
gibberish applied from a
Fascinating. I also have one of these with slight differences, but it
does have a Fort Meade tag. Bought it from a guy on the BoatAnchors
list in Atlanta in the dim past.
The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104
The rotary switch adds a 160 KHz position. The two
...@iaxs.net
Sender: time-nuts-boun...@febo.com
Date: Sun, 11 Dec 2011 15:12:51
To: 'Discussion of precise time and frequency measurement'time-nuts@febo.com
Reply-To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: Re: [time-nuts] looking for data on time code
I think I've seen IRIG Time Code SW for the PC that uses a sound card, but
I forget where. The various IRIG formats are well dovumented.
And yes, Time Code readers were used with high and low speed searches on
IRIG tape recorders. You set Start and Stop points and the tape would
Play, Stop,
Any chance of a photo?
On 12 December 2011 04:26, Bob Camp li...@rtty.us wrote:
Hi
Maybe you could call them up and ask for information on the system they
went with….:)…
Sounds like a great way to wind up on a no fly list.
Bob
On Dec 11, 2011, at 11:40 AM, Jean-Louis Noel wrote:
Try their reading room first.
http://www.nsa.gov/public_info/foia/reading_room/index.shtml
If there is no information in the reading room, do a FOIA. This
information is always run past lawyers, not engineers. Don't be
surprised if you get a call from whatever NSA calls their legal
On Dec 11, 2011, at 4:12 PM, Bill Hawkins wrote:
Fascinating. I also have one of these with slight differences, but it
does have a Fort Meade tag. Bought it from a guy on the BoatAnchors
list in Atlanta in the dim past.
The HTID number is H9823180065821, NSN 664500DISPLAY, User ID STWA104
On Dec 11, 2011, at 5:25 PM, J. Forster wrote:
I think I've seen IRIG Time Code SW for the PC that uses a sound card, but
I forget where.
http://www.dolben.org/IRIG.php
Best regards,
-Steve
--
Steve Byan steveb...@me.com
Littleton, MA 01460
On Dec 11, 2011, at 6:18 PM, Jim Palfreyman wrote:
Any chance of a photo?
http://www.gull.us/misc/nixie/dlf-front.jpg
It's not mine, but it looks the same except that the yellow sticker is on the
side of mine rather than the front.
Best regards,
-Steve
--
Steve Byan steveb...@me.com
Maybe something like a Datum or AstroData.
The reverse code switch is for reading tapes backwards. It looks like a
modified standard product. It does not appear to interface w/ a tape
search controller.
At a guess it's mid 1960s to mid 1970s, to go w/ something like an Ampex
FR1800 or similar
It was just on the thread a month ago.
nematime $15 donation.
I have used it and it worked well.
On Sun, Dec 11, 2011 at 5:25 PM, J. Forster j...@quikus.com wrote:
I think I've seen IRIG Time Code SW for the PC that uses a sound card, but
I forget where. The various IRIG formats are well
I had hoped the frequencies listed on the controls might trigger some
association in someone who's knowledgable about time-codes. 250 Hz
doesn't seem to be a legal IRIG time-code frequency, although 1 kHz is.
I'd try feeding it with various frequencies as others have suggested and see
what
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