Re: [time-nuts] FASTRAX GPS

2014-07-03 Thread jim s
I appreciate the advise. I bought one of the cheepo units just to see it work (hopefully) but to run better location I'll probably pull 2 or more of the better wire, so I can run multiple receivers. I also have two different books, one off top of my head is Pasternak Enterprises, so I can get

Re: [time-nuts] GPS and other low speed data via CAT5 wire

2014-07-03 Thread Hal Murray
albertson.ch...@gmail.com said: For GPS you need to also include the microseconds long pulse per second. I think it might by the very short duty cycle of the pulse that makes it hard to transmit using RS-232 style signaling. The problem with short PPS pulses is that some PCs don't catch

[time-nuts] FE 5680A GPSDO update

2014-07-03 Thread EWKehren
First let me thank again Scott Newell for all the work he has done. The links included in this post where made possible by Scott. All three exceed the limit of time nuts but will give you a better understanding as to what is going on. First removing the 10 K resistor changes the Rb frequency

Re: [time-nuts] FASTTRAX GPS

2014-07-03 Thread Al Wolfe
Back in the 1980's I was tasked with installing about 100 terminals (VT100 type) to a mainframe computer. These all ran at 9600 baud, RS232. Some of the terminals were almost 1000 feet wire distance from the switch. We used some Beldon multiple twisted pair to interconnect these devices with

[time-nuts] FE 5680A GPSDO update second link problem

2014-07-03 Thread EWKehren
Some how a dot snuck in at the end of the second link after the s you can use the old link and delete the dot or use this one http://n5tnl.com/time/fe-5680a/gpsdo/JK5680A_Test35c.xls Sorry about that Bert Kehren ___ time-nuts mailing list --

Re: [time-nuts] NTS server from IRIG?

2014-07-03 Thread W2HX
Yes, thank you. I did mean NTP. Thanks very much for the link for the NTP server! Great idea, I will pursue. thanks 73 Eugene W2HX -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Albertson Sent: Thursday, June 26, 2014 6:02 PM

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-03 Thread Angus
Hi Bert, I am thinking about testing a heat pipe on a fan cooled setup I use. The first temp controlled chassis I did used a peltier and works very well, but was a lot more work to do and is much more power hungry. The main problem I find is not the temp controller itself, but rather the

[time-nuts] Does anyone have a good pointer...

2014-07-03 Thread Kenton A. Hoover
...to an application note on battery monitoring/charging circuits for lithium batteries? ---Brevity from tired fingers, mangling by AutoIncorrectKenton A. hooverken...@nemersonhoover.org+1 415 830 5843 That sounds complicated and messy but may be easier than it appears. An appropriate

Re: [time-nuts] Does anyone have a good pointer...

2014-07-03 Thread Tom Van Baak (lab)
This is a precise time frequency list. Please explain a little more how your battery question relates? I've actually spent a lot of time over the years working on fail-safe power issues. It's actually really hard! But, what's your goal, or specifications, or specific problem? /tvb (i5s) On

Re: [time-nuts] DIY FE-5680A lobotomy (disable temp compensation)

2014-07-03 Thread Alexander Pummer
keep the heat sensing very close to the heating to avoid thermal control oscillation ! a thermal time constant is large and no to easy to deal with it 73 Alex On 7/3/2014 6:35 PM, Angus wrote: Hi Bert, I am thinking about testing a heat pipe on a fan cooled setup I use. The first temp