Re: [time-nuts] 5061A Problem Child - It Lives!

2010-07-08 Thread EWKehren
You do not need a pico amp meter all you need is a digital multi meter that has a 10 M ohm input resistance. Bert Kehren In a message dated 7/7/2010 9:23:52 P.M. Eastern Daylight Time, paulsw...@gmail.com writes: Completely agree congrats and thanks for the update. I may be getting back

Re: [time-nuts] Auto TBolt TC Adjust

2010-07-08 Thread Ulrich Bangert
Bob, More or less you would be making the TBolt do a dumbed down version of what the Z38xx's do. If you have more detailed knowlegde about what the Z38XX do concerning their time constant, would you share it with me? There has been another thread here on TBolt's time constants. A TBolt that

Re: [time-nuts] Auto TBolt TC Adjust

2010-07-08 Thread Bob Camp
Hi If you watch a z3801 or 3805 you can see it switch time constants. There appear to be about 4 steps on the 3805. Beyond that I have only a guess that they are starting in the vicinity of 4 seconds and finishing at or beyond 200 seconds. Bob On Jul 8, 2010, at 4:40 AM, Ulrich Bangert

Re: [time-nuts] 5061A Problem Child - It Lives!

2010-07-08 Thread Pete Lancashire
cool congrats !! -pete On Tue, Jul 6, 2010 at 9:43 PM, J. L. Trantham jlt...@att.net wrote: Just a wrap up on the 5061A that had a Beam I but no 2nd Harmonic indication. I was originally stymied by swaps of modules with another 'functioning unit' with no help.  I then swapped CS tubes with

[time-nuts] RF Prescaler for 53131A/53132A/53181A counters - update !

2010-07-08 Thread Samuel DEMEULEMEESTER
Here is some update on my low-cost extension board for the Agilent/HP counters. Finally received all the components and assembled everything some days ago. Here is a picture : http://www.x86.fr/rfpsc/rf_psc_01.jpg. Right now, the performance is really good up to 3.5 GHz : 50 MHz : -7 dB 100

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Lester Veenstra
Safe to get in the water yet? Lester B Veenstra MØYCM K1YCM les...@veenstras.com m0...@veenstras.com k1...@veenstras.com   US Postal Address: PSC 45 Box 781 APO AE 09468 USA UK Postal Address: Dawn Cottage Norwood, Harrogate HG3 1SD, UK Telephones: Office: +44-(0)1423-846-385 Home:

Re: [time-nuts] GPS Common View

2010-07-08 Thread Bob Camp
Hi Extracting code phase data from the TBolt may or may not be practical. I'm looking at that as a future project. Right now all I'm really trying to do is see if there is any real interest in an amateur common view experiment. With the PICTIC II and a TBolt, you *should* have just about

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Bob Camp
Hi The real question somebody needs to answer is - will it work with side adjust trimmers? If not, then we're going to have to find another source to get the trimmers from. The project on Mouser shows the 3266p trimmer. AFIK the correct part is the 3266w. The board also appears to be laid

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Richard H McCorkle
Bob, Instead of the 3266 series go to the 3296 series 5K Trimmer, top adjust 652-3296W-1-502LF 7100 in stock 652-3296Y-1-502LF 590 in stock 200 Trimmer, top adjust 652-3296W-1-201LF 1090 in stock 652-3296Y-1-201LF 830 in stock Richard Hi The real question somebody needs to answer is -

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Bob Camp
Hi Ok, It wasn't clear to me weather the 3/8 parts would fit on the layout in place of the 1/4 parts. The larger parts are indeed easier to get. Thanks! Bob On Jul 8, 2010, at 7:26 PM, Richard H McCorkle wrote: Bob, Instead of the 3266 series go to the 3296 series 5K Trimmer, top

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Bob Camp
Hi Another thing I think we need to get on the project is Q4: 512-2N7000TAFarichild's version at 0.13 each. Since I didn't create the project I don't seem to be able to edit it Bob On Jul 8, 2010, at 7:26 PM, Richard H McCorkle wrote: Bob, Instead of the 3266 series go to the

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Bob Bownes
I'll get these 2 corrections in tonight. I was wondering if the 3/8 parts would fit. On Thu, Jul 8, 2010 at 8:07 PM, Bob Camp li...@rtty.us wrote: Hi Another thing I think we need to get on the project is Q4: 512-2N7000TA    Farichild's version at 0.13 each. Since I didn't create the

[time-nuts] GPS Timing Source -- looking at buying

2010-07-08 Thread Chris H
(Whoops will post from the correct address this time) Hello, I was just wondering if the following product: http://www.triginstruments.co.nz/catalog/product_info.php?products_id=1302osCsid=b80759ac903096c20d806ddeb3d71121 Would be good as a timing source for GPS -- does it have the

Re: [time-nuts] GPS Timing Source -- looking at buying

2010-07-08 Thread Bob Camp
Hi For less money, you can get a Thunderbolt on the e-place. It will get you a lot closer to your goal while not making it to Stratum-0. Bob On Jul 8, 2010, at 8:42 PM, Chris H wrote: (Whoops will post from the correct address this time) Hello, I was just wondering if the following

Re: [time-nuts] Parts (Mouser) for the PICTIC II

2010-07-08 Thread Bob Camp
Hi A few other things to consider: The MAX 232 is an either / or with a transistor and a couple of resistors. Not a lot of money either way. I'd just go for the MAX and leave out the transistor. Putting the PIC in a skinny 14 pin socket would make things a bit easier if there are software

Re: [time-nuts] GPS Timing Source -- looking at buying

2010-07-08 Thread Chris H
(That Price was New Zealand Dollars) I ideally would like to really do one of two things... EBU Timecode in LTC format (audio timecode) or Make a linux box into a master time source... It says I need windows XP and things, or is that just to configure and check connectivity.. I have a Sun

Re: [time-nuts] GPS Timing Source -- looking at buying

2010-07-08 Thread Chris H
Just quoted $1,000+ USD for the thunderbolt.. so not really the sort of money I want to spend on this little project :) On Thu, 2010-07-08 at 20:45 -0400, Bob Camp wrote: Hi For less money, you can get a Thunderbolt on the e-place. It will get you a lot closer to your goal while not making

Re: [time-nuts] GPS Timing Source -- looking at buying

2010-07-08 Thread Bob Camp
Hi Thunderbolts show up regularly on eBay for $60 plus about $25 in shipping. There are standard NTP drivers that appear to work ok with them. Bob On Jul 8, 2010, at 9:15 PM, Chris H wrote: Just quoted $1,000+ USD for the thunderbolt.. so not really the sort of money I want to spend on

Re: [time-nuts] GPS Timing Source -- looking at buying

2010-07-08 Thread Hal Murray
I was just wondering if the following product: http://www.triginstruments.co.nz/catalog/product_info.php?products_id=1302os Csid=b80759ac903096c20d806ddeb3d71121 That's a Garming GPS-18 PC, the version that gets power from a cigarette lighter. (What are they called now that lots of people

Re: [time-nuts] RF Prescaler for 53131A/53132A/53181A counters - update !

2010-07-08 Thread Richard (Rick) Karlquist
Samuel DEMEULEMEESTER wrote: Right now, the performance is really good up to 3.5 GHz : 50 MHz : -7 dB 100 MHZ : -15 dB 250 MHz : -26 dB 500 MHz : -30 dB 1 GHZ : -32 dB 2 GHz : -32 dB 3 GHz : -30 dB The real deal on the performance of prescalers is the ability to count noisy sources. If