Re: [time-nuts] DC distribution

2019-10-22 Thread jimlux
On 10/22/19 7:58 PM, Scott McGrath wrote: 4 pin xlr is also standard for pro audio/video. So you might want to use the same pin configuration as the ‘standard’ so you can use the large variety of accessories available. Content by Scott Typos by Siri On Oct 22, 2019, at 7:42 PM,

Re: [time-nuts] "Ancient 5065..."

2019-10-22 Thread paul swed
Bob indeed with the comment from a friend, that sort of settled my desire for a patek down. Agree on the divide chain and drivers. Very easy to replace today. But not a concern since I won't be bidding for a clock with a maybe working something. Regards Paul WB8TSL On Tue, Oct 22, 2019 at 6:31 PM

Re: [time-nuts] DC distribution

2019-10-22 Thread Scott McGrath
4 pin xlr is also standard for pro audio/video. So you might want to use the same pin configuration as the ‘standard’ so you can use the large variety of accessories available. Content by Scott Typos by Siri On Oct 22, 2019, at 7:42 PM, "n...@lazygranch.com" wrote: Glad I read all the

Re: [time-nuts] DC distribution

2019-10-22 Thread n...@lazygranch.com
Glad I read all the replies since I was also going to suggest Canon connectors. I have used the 3 pin canon because they are easy to find and I am not going to plug a microphone into a power supply. The breakout box is unique enough to not get it confused with anything else. (Not suitable for the

[time-nuts] "Deaf" receivers ?

2019-10-22 Thread shouldbe q931
I recently acquired a pair of Meinberg M600's (with GPS-CON downconverters). >From the usual auction site got a dual band antenna (for futureproofing), a 2nd hand mini-circuits ZN4PD1-63W-S+, several SMA BIAS-TEE to prevent DC issues, and an assortment of coax cables to connect everything up. To

Re: [time-nuts] "Ancient 5065..."

2019-10-22 Thread Bob kb8tq
Hi Indeed, while the clock *is* cool, I would strip it out of a 5065. The nose is one issue. The power consumed by the chain of boards (which also would go) is (to me) at least as big a bother. Bob > On Oct 22, 2019, at 10:47 AM, paul swed wrote: > > The comment I would make is in the past

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread Fiorenzo Cattaneo
Hi jimlux -- unfortunately my domain expertise is in the digital domain (computer science) and I'm having a hard time in following this paper. I do understand that "space weather", i.e. CMEs (coronal mass ejections) will significantly impact GPS/GLONASS operations when the charged particles reach

Re: [time-nuts] can of worms: time-of-day in a community radio station

2019-10-22 Thread Fiorenzo Cattaneo
> > > With this setup you have no single point of failure, and even if the > > connection to internet fails, they can still provide time as they are > > peering > > and synchronizing with each other. > No, it doesn't work that way. You need connectivity to at least one stratum 1 > server. >

Re: [time-nuts] "Ancient 5065..."

2019-10-22 Thread paul swed
The comment I would make is in the past there have been discussions on time-nuts about the patek clock movement. Maybe the units worth it for that alone. But do agree the shipping will be quite an additional cost. I had actually wanted a clock. But a person filled me in on the clack clack clack of

Re: [time-nuts] Flash!!! FA2 works on Arduino Tablets !!!

2019-10-22 Thread ew via time-nuts
How does https://www.startech.com/Cards-Adapters/Serial-Cards-Adapters/micro-usb-serial-adapter-android~ICUSBANDR232 do it? Once every thing else works I may buy one. Bert Kehren In a message dated 10/22/2019 9:06:15 AM Eastern Standard Time, shali...@gmail.com writes: The tablet will

Re: [time-nuts] Flash!!! FA2 works on Arduino Tablets !!!

2019-10-22 Thread Didier Juges
The tablet will not accept charging current when in the OTG mode, which is required to make the tablet a master (USB is asymmetrical system, there is always a master and a slave). It is not a function of the type of hub plugged into it. When you plug the tablet into a PC, the PC is the master and

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread jimlux
On 10/22/19 1:13 AM, Poul-Henning Kamp wrote: In message , Fiorenzo Cattaneo writes: Any kind of atmospheric disturbance has a measurable effect on GPS space and time precision, [...] Actually, it's even simpler than that: Any electrical charge in the freshnell-zone between the

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread jimlux
On 10/22/19 2:23 AM, Jim Palfreyman wrote: I see no attenuation at 1376 MHz (close to GPS frequency) when observing pulsars with a radio telescope. Even the brightest pulsar (Vela) is so much fainter than a GPS signal which boom in when they happen to pass into the telescope's beam. It

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread jimlux
On 10/21/19 10:06 PM, Dana Whitlow wrote: A friend of mine living in SE lower Michigan recently bought a Geppetto GPS clock, and swears that it tends to lose satellite lock on cloudy days but does OK on sunny days. He is admittedly using a very poorly-sited antenna, placed in a window because

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread Poul-Henning Kamp
In message , Fiorenzo Cattaneo writes: >Any kind of atmospheric disturbance has a measurable effect on GPS >space and time precision, [...] Actually, it's even simpler than that: Any electrical charge in the freshnell-zone between the two antennas delays the signal. In practice that

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread Jim Palfreyman
I see no attenuation at 1376 MHz (close to GPS frequency) when observing pulsars with a radio telescope. Even the brightest pulsar (Vela) is so much fainter than a GPS signal which boom in when they happen to pass into the telescope's beam. It definitely happens at higher frequencies though. Up

Re: [time-nuts] Ancient HP 5065A on ebay

2019-10-22 Thread tim...@timeok.it
It must be very old, had I ever seen an HP5065A with three positions of the Function Switch (Adj Mag Field) Luciano Da "time-nuts" time-nuts-boun...@lists.febo.com A time-nuts@lists.febo.com Cc Data Mon, 21 Oct 2019 08:59:34 -0700 Oggetto [time-nuts] Ancient HP 5065A on

Re: [time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread Fiorenzo Cattaneo
Any kind of atmospheric disturbance has a measurable effect on GPS space and time precision, the question is more about how much the impact is. Presuming that the GPS receiver is stationary, the antenna has a clear visibility of the sky, then "ordinary weather" like clouds, moderate rain or snow,

[time-nuts] Do ordinary clouds adversely affect GPS reception?

2019-10-22 Thread Dana Whitlow
A friend of mine living in SE lower Michigan recently bought a Geppetto GPS clock, and swears that it tends to lose satellite lock on cloudy days but does OK on sunny days. He is admittedly using a very poorly-sited antenna, placed in a window because his house has aluminum siding. He reports