Re: [time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

2019-02-25 Thread Bob kb8tq
Hi Well …. ummm …. errr …. it turns out that there *are* (or were) papers published on the topic that are “well known” in the … e …. space community and pop right out of the stack of papers that the guys from …. errr …. a well known space outfit in California bring with them …. The issue

Re: [time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

2019-02-25 Thread Poul-Henning Kamp
In message <1f48decf-dee6-220f-f7ce-948642724...@rubidium.se>, Magnus Danielson writes: >The trouble with aluminium electrolytics is [...] Thanks for proving the exact point I made in my email yesterday. Now please go read it, because it contains some important details :-) --

Re: [time-nuts] GN-GGB0710 GNSS Antenna

2019-02-25 Thread Ben Hall
On 2/24/2019 7:01 PM, djl wrote: Probably tapped for 1/2" pipe thread. Hi Don, I don't think so - the threads were much too coarse. 1/2" NPT is 14 threads per inch. My 5/8-11 tap went in quite easily and didn't cut new threads, just deepened up the original threads... thanks, ben

Re: [time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

2019-02-25 Thread Magnus Danielson
Hi, On 2019-02-25 07:48, Poul-Henning Kamp wrote: In message , Dana Whitlow writes: This would seem to imply that purposely overrating a 'lyt is pretty pointless. Any comments on this notion? I've always wondered that myself, and found very little documentation or wisdom

Re: [time-nuts] Leitch CSD-5300 Master Clock Manual

2019-02-25 Thread Michael Wouters
Hello Rodger, We have one of these still operating in the lab and I have a manual. Please contact me off list. Cheers Michael On Tue, 26 Feb 2019 at 3:00 am, Rodger via time-nuts < time-nuts@lists.febo.com> wrote: > Thanks but that manual is for the slave clock displays. I'm looking for > the

Re: [time-nuts] GN-GGB0710 GPS Antenna Mounting Thread

2019-02-25 Thread jimlux
On 2/25/19 8:44 AM, David Witten wrote: The bit of threaded tubing I found at the hardware store that fits perfectly is labeled: ProLine plumbing and heating products BN-750NLB 877250 Nipple (Niple) 1/4 inch x 1/4 inch x 6 inch MIP for installation instructions visit: www.bkproducts.com I was

[time-nuts] GN-GGB0710 GPS Antenna Mounting Thread

2019-02-25 Thread David Witten
The bit of threaded tubing I found at the hardware store that fits perfectly is labeled: ProLine plumbing and heating products BN-750NLB 877250 Nipple (Niple) 1/4 inch x 1/4 inch x 6 inch MIP for installation instructions visit: www.bkproducts.com I was surprised by the 1/4 inch bit, as it seems

Re: [time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

2019-02-25 Thread jimlux
On 2/25/19 5:48 AM, Bob kb8tq wrote: Hi Indeed there is both a minimum and a maximum working voltage for a properly derated electrolytic capacitor. We found that out in the middle of a design review when the customer’s team brought it up … (much to our surprise). Bob The Cornell Dubilier

Re: [time-nuts] Leitch CSD-5300 Master Clock Manual

2019-02-25 Thread Rodger via time-nuts
Thanks but that manual is for the slave clock displays. I'm looking for the manual for the master, which is a single unit, rack mounted device. -Original Message- From: time-nuts On Behalf Of Joseph Gray Sent: Monday, February 25, 2019 3:52 AM To: Discussion of precise time and

Re: [time-nuts] GN-GGB0710 GNSS Antenna

2019-02-25 Thread jimlux
On 2/24/19 5:01 PM, djl wrote: Probably tapped for 1/2" pipe thread. Don I don't know.. 1/2" NPT is 0.840" which a lot bigger than 5/8" 0.625" 3/8" NPT is 0.675, which would be pretty loose on a 5/8" bolt. 3/8" is 18 TPI. Not til you get up to the 1" and bigger do you get down to 11.5 TPI.

Re: [time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

2019-02-25 Thread Bob kb8tq
Hi Indeed there is both a minimum and a maximum working voltage for a properly derated electrolytic capacitor. We found that out in the middle of a design review when the customer’s team brought it up … (much to our surprise). Bob > On Feb 25, 2019, at 1:48 AM, Poul-Henning Kamp wrote: >

Re: [time-nuts] how to feed multiple GPS receivers ?

2019-02-25 Thread Bob kb8tq
Hi On a GPS distribution system the issue of 75 vs 50 ohm cable is pretty much a non-issue. A lot of people have run 75 ohms (like Trimble on the TBolt) and had no problems from this. The “TV” splitters are generally spec’d to 2 GHz, so well beyond GPS frequencies. Again, it should not be an

Re: [time-nuts] Leitch CSD-5300 Master Clock Manual

2019-02-25 Thread Joseph Gray
Older model, but this may help. http://www.drivehq.com/file/df.aspx/shareID3748302/fileID641557522/641557522.pdf Joe Gray W5JG On Sun, Feb 24, 2019 at 9:03 PM Rodger via time-nuts < time-nuts@lists.febo.com> wrote: > Hello List, > > > > I am looking for the manual for a Leitch CSD-5300 master

Re: [time-nuts] HP Stories: An architectural view of the HP 5060/5061 and awkward oscillator adjustments.

2019-02-25 Thread Alex Pummer
I do not know, if the brake down voltage decreases if the electrolyte capacitor is used well bellow the original rated voltage, but I know from experience, that if you cautiously and slowly increase the voltage across the capacitor it will work at higher than the rated voltage, but with

[time-nuts] Leitch CSD-5300 Master Clock Manual

2019-02-25 Thread Rodger via time-nuts
Hello List, I am looking for the manual for a Leitch CSD-5300 master clock. These were used in the broadcast industry in the 80s and 90s. There is a related white paper on the internet titled "A Telephone-Based Time Dissemination System" with a filename of ADA499239.pdf that describes the