Re: [time-nuts] GPS WASS PRN#38(#51) Operational?

2006-05-04 Thread jmfranke
Don Mimlitch, Your email is most interesting. My GPS76 receiver shows PRN#35, which was moved West from its position over the Atlantic, but no PRN#38 or #51. What are the positions of these two WAAS satellites. How are you monitoring if your 17HVS refuses acquisition? The reason I am

[time-nuts] Announcing the TADD-3 Pulse Distribution Amplifier

2006-05-04 Thread John Ackermann N8UR
TAPR is pleased to announce that the TADD-3 PPS distribution amplifier kit is now available. The TADD-3's primary use is to distribute 1 pulse-per-second signals such as those obtained from GPS timing receivers, but it can work with pulse signals up to at least 10MHz. The TADD-3 provides six

Re: [time-nuts] Oncore 1pps driver LED

2006-05-04 Thread Randy Warner
Glenn, You can drive the LED from the DCD line, but along with a series resistor you need to be sure to include an extra steering diode in series with the LED. LED's have absolutely no sense of humor about being reverse biased above a volt or two. This might also affect your 1PPS pulse accuracy.

Re: [time-nuts] Oncore 1pps driver LED

2006-05-04 Thread Randy Warner
Hal, Certainly true. The UT+ is programmable so that you can disable the 1PPS altogether, disable it if TRAIM fails, or disable it if the receiver is not tracking at least one satellite. The default condition is for the 1PPS to be on all the time. Many systems require that the 1PPS stay on when

[time-nuts] ICS525 Battery Top Singnal Generator - Frequency Synthesizer-Translator, Test Transmitter, (Crystal Replacement?)

2006-05-04 Thread Brooke Clarke
Hi: Awhile ago there was some discussion about the ICS525 and I finally got a quote on their demo board it was $57 and 10 weeks. Well it's been less than 10 weeks and I've made my own, with more features than the stock version. There's been some delay getting all the stuff to do fine pitch