Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread Rob Kimberley
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I have read with some interest the thread on LORAN-C antennae. Although over 20 years since I was actively involved with Austron LORAN-C, I have data sheets and an installation instruction sheet on their 2026W Whip and 2021L

[time-nuts] Looking for Magellan GPS Module

2007-11-13 Thread Rob Kimberley
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I'm looking for the following obsolete GPS module from Magellan. If anyone has one tucked away in a drawer somewhere that they know is Ok, then please let me know ASAP. GPS OEM 5000 P/N 00-85001-003 Many thanks. Rob

[time-nuts] NPL Time Frequency Meeting - 27th November

2007-11-13 Thread Rob Kimberley
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY For our UK readers...and any other Time Nut in the UK during late November... It's free to attend, and a buffet lunch is provided. Register on line at: http://www.npl.co.uk/server.php?show=ConWebDoc.1749 Rob Kimberley

Re: [time-nuts] Loran antenna

2007-11-13 Thread Alan Melia
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Didier, you will find a lot of information on small LF antennas on the Long Wave Club of America site www.lwca.org look in particular for an active voltage probe antenna by Roeloff Bekker PA0RDT. This is proving quite

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread Carl Walker
That last shot looked a little better. It's a tough thing to see on an SA - being just groups of pulses. It takes max-hold a little while to build things up with a digital display. -Carl On Mon, 2007-11-12 at 22:23 -0600, Didier Juges wrote: ___

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread Carl Walker
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Bill is correct - 10V should do it; these couplers were fed DC up the coax with ~10mH of choke from a circuit that could detect whether the load of the amplifier was present or shorted (essentially open and short DC antenna

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread John Ackermann N8UR
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Didier Juges said the following on 11/12/2007 10:48 PM: I have tried to listen with my HP 3586 and my 80 meter antenna (which is actually about 20m long and 50 feet up at one end, 30 feet up at the other end), but I have

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread John Ackermann N8UR
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Didier Juges said the following on 11/12/2007 11:02 PM: ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I get this (see picture) with the spectrum analyzer and my wire antenna. That looks a lot

[time-nuts] HP-3336A Level Generator manual

2007-11-13 Thread marks twotoe.com
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Nigel, I have found a pdf copy of the Manual with full schematics for the ABC including optuion 5. If you still require it, let me know where I can send it? Now I am keen to get my 3336 going and I am after the ROM images

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread Dan Rae
Didier Juges wrote: Is it possible to build a Loran antenna? Yes. For my Austron 2100 I built an active ferrite rod antenna which works very well. Much better than an active rod since by using the magnetic field component, it rejects a lot of the local interference (tv timebases and

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread Poul-Henning Kamp
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY In message [EMAIL PROTECTED], Dan Rae writes: I filled a ferrite rod (from an old BC receiver) with a bifilar winding of wire wrap wire, parallel C to resonate at 100 kHz and the center tap grounded. For Loran-C too much

Re: [time-nuts] LORAN-C antenna

2007-11-13 Thread James Maynard
I have used a Palomar Engineers loop antenna, together with their loop amplifier, feeding the output directly to the input of my oscilloscope. I devised a programmable counter to divide the 5 MHz output of an HP10811A down to the group repetition interval (GRI) of my local Loran-C chain. The

[time-nuts] GPS Jamming in the UK

2007-11-13 Thread GandalfG8
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY I've not come across this before and when a friend first fowarded the link from another group I thought it was a spoof, and still only half convinced:-), but I've just copied this from the official Ofcom Website in the

[time-nuts] 5071A Assembly Level Service Manual for S/N Prefixes 3249A and US3930

2007-11-13 Thread Jean-Louis Oneto
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi everybody, I'm looking for the HP5071A (prefix 3249A) and Agilent 5071A (prefix US3930) Service Manuals. I have only found on the web (Symmetricom site) the manual for the prefix US4538 and above. Thanks a lot in advance,

Re: [time-nuts] HP-3336A Level Generator manual

2007-11-13 Thread GandalfG8
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY In a message dated 13/11/2007 15:15:26 GMT Standard Time, [EMAIL PROTECTED] writes: I have found a pdf copy of the Manual with full schematics for the ABC including optuion 5. If you still require it, let me know where

Re: [time-nuts] HP-3336A Level Generator manual

2007-11-13 Thread Jose V. Gavila
Hello! I have still to check my unit but I am afraid PROMS are soldered... I hope to have some time over the weekend. Sorry for delay grin! BTW, I also have an 'A' (working) and a 'B' (parts unit) and I can tell for sure that firmware is the same, because I swapped digital boards among them and

Re: [time-nuts] HP-3336A Level Generator manual

2007-11-13 Thread GandalfG8
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY In a message dated 13/11/2007 17:23:15 GMT Standard Time, [EMAIL PROTECTED] writes: I have still to check my unit but I am afraid PROMS are soldered... I hope to have some time over the weekend. Sorry for delay grin!

[time-nuts] PTS X10 System Section Manual

2007-11-13 Thread GandalfG8
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi All I've just uploaded a scan of the complete System Section from the PTS X10 manual to Didier's web site. This includes the programming information plus a general description of the unit and schematics for the power

Re: [time-nuts] GPS Jamming in the UK

2007-11-13 Thread Bruce Rahn
[EMAIL PROTECTED] wrote: I've not come across this before and when a friend first fowarded the link from another group I thought it was a spoof, and still only half convinced:-), but I've just copied this from the official Ofcom Website in the UK.. The Ministry of Defence conduct

[time-nuts] Racal 9475 Rb Standard manual wanted

2007-11-13 Thread Dan Rae
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Does anyone have an electronic copy of the subject manual? I have details of the Efratom OEM unit that is used in it, I just need the surrounding Racal support stuff. Thanks, Dan ac6ao

Re: [time-nuts] GPS Jamming in the UK

2007-11-13 Thread Rob Kimberley
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY C/A code was originally designed as course clock to allow P/Y code hardware to lock on, and you should also note that latest generation P/Y hardware can directly acquire and stay locked without C/A. In the event of a local or

Re: [time-nuts] GPS Jamming in the UK

2007-11-13 Thread Brooke Clarke
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Rob: It was my understanding that SA has been legislated away (mainly to promote civilian GPS use) and so the military no longer has the option of turning SA on to deny an enemy use of GPS. So we are developing GPS

Re: [time-nuts] GPS Jamming in the UK

2007-11-13 Thread Magnus Danielson
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY From: Brooke Clarke [EMAIL PROTECTED] Subject: Re: [time-nuts] GPS Jamming in the UK Date: Tue, 13 Nov 2007 15:06:16 -0800 Message-ID: [EMAIL PROTECTED] Hi Rob: It was my understanding that SA has been legislated away

Re: [time-nuts] GPS Jammers

2007-11-13 Thread Magnus Danielson
From: Brooke Clarke [EMAIL PROTECTED] Subject: Re: [time-nuts] GPS Jammers Date: Tue, 13 Nov 2007 17:11:46 -0800 Message-ID: [EMAIL PROTECTED] ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Tom: I've also seen the three antenna version on the asian discount web

Re: [time-nuts] paralleling regulator redux

2007-11-13 Thread Didier Juges
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY It's been my experience that most low-dropout regulators are worse than the older generation high-dropout, not only for noise but also for ripple and transients rejection, probably because of the unfavorable topology of a power

Re: [time-nuts] GPS Jammers

2007-11-13 Thread Bruce Rahn
); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Magnus Danielson wrote: ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY From: Brooke Clarke [EMAIL PROTECTED] Subject: Re: [time-nuts] GPS Jammers Date: Tue, 13 Nov 2007 17:11:46 -0800 Message-ID: