Re: [time-nuts] Symmetricom 58536A

2020-08-17 Thread Frank O'Donnell
ers look to see if the antenna is drawing current, to determine if it’s alive. With a splitter, the receiver might not see an antenna current. I seem to recall the TBolt had a setting for that. KR On Aug 17, 2020, at 3:04 PM, Frank O'Donnell wrote: Based on a recommendation here sometime back,

[time-nuts] Symmetricom 58536A

2020-08-17 Thread Frank O'Donnell
Based on a recommendation here sometime back, I bought a Symmetricom 58536A distribution amplifier so that up to four GPSDOs can share my rooftop Lucent 26db twist antenna. When I connect the antenna to its port on the 58536A, and a Trimble Thunderbolt to port 1, Heather shows no antenna

Re: [time-nuts] TAPR TICC and TADD-2 Minis

2020-06-01 Thread Frank O'Donnell
On 5/31/20 8:14 PM, Charles Steinmetz wrote: Doing as you are now -- feeding the T2-Mini output through coax to the input of your scope -- you will either need to switch the scope input impedance from 1 Mohm to 50 ohms (if the scope has that feature -- sadly, many digiscopes do not), or use a

[time-nuts] TAPR TICC and TADD-2 Minis

2020-05-31 Thread Frank O'Donnell
Hi all, recently I bought a TAPR TICC as a learning project, and also bought two TADD-2 Minis to serve as sine-to-square converters for the two inputs. Since the TADD-2 Minis will be dedicated for this purpose, I simplified their assembly by just installing a jumper from pin 2 to 3 of the IC

Re: [time-nuts] GPS antenna splitter recommendation?

2020-04-29 Thread Frank O'Donnell
On 4/29/20 6:01 PM, Bob kb8tq wrote: Here’s a few: Bob, thanks very much for the suggestions. Five of the seven splitters in your list appear to offer a total of two output ports. What I'm looking for is one that will accommodate (specifically) three or four ports. Of the remaining two on

[time-nuts] GPS antenna splitter recommendation?

2020-04-29 Thread Frank O'Donnell
I'm looking for a splitter to allow three or four GPSDO's to share my roof-mounted Lucent PCTEL KS24019L112C 26db GPS twist antenna. I understand from scanning past threads that inexpensive splitters by companies like Mini-Circuits often turn up on eBay, but I'm having trouble narrowing down

Re: [time-nuts] Connector options for HP10811A?...

2020-04-09 Thread Frank O'Donnell
Thanks for all of the replies to my question about a connector for the HP10811A. Sounds like a number of good options. Frank ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to

[time-nuts] Connector options for HP10811A?

2020-04-08 Thread Frank O'Donnell
be operating right now? Thanks much, Frank O'Donnell South Pasadena, California ___ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.

Re: [time-nuts] Accuracy results with Trimble Thunderbolt?

2020-03-25 Thread Frank O'Donnell
Tom, Thanks very much, that's a great list and will keep me busy for some time. At the hobbyist level, are there time interval counters or frequency counters that are particularly popular, and/or that pair well with the listed software? Frank On 3/25/20 2:30 PM, Tom Van Baak wrote:

[time-nuts] Accuracy results with Trimble Thunderbolt?

2020-03-20 Thread Frank O'Donnell
I hope you all don't mind a novice-level question, but I'd be interested in any feedback on what I'm seeing with the accuracy of the 10 MHz signal out on my Trimble Thunderbolt. I bought the Thunderbolt last year used on eBay, and it appears to be of about 2001 vintage. Most recently it's

Re: [time-nuts] Recommendations for time beginner?

2019-07-09 Thread Frank O'Donnell
e than if you just let it freerun. Hope my rambling helps. On Mon, Jul 8, 2019 at 2:12 PM Frank O'Donnell wrote: Hi, I'm extremely new to the topics covered on this list, but am finding reading the message traffic to be highly educational. I have some questions that I'd like to put out,

[time-nuts] Recommendations for time beginner?

2019-07-08 Thread Frank O'Donnell
). For a beginner, is there something else that offers accuracy/precision at least as good as a Thunderbolt and doesn't cost more than a few hundred dollars at most that you might recommend? I also have some questions about using the Trimble, but will put those in a separate message. Thanks, Frank