Re: [time-nuts] 5 MHz Frequency Doubler (Dr Bruce Griffiths)

Dr Bruce Griffiths wrote: The design is probably a pair of low noise n channel JFETs configured as a push push doubler. Inputs driven in antiphase so that each FET conducts ffor opposite 1/2 cycles with the 2 FET drains connected in parallel. A bypassed trimpot connected between the FET

Re: [time-nuts] 5 MHz Frequency Doubler (Dr Bruce Griffiths)

Christopher Hoover wrote: Dr Bruce Griffiths wrote: The design is probably a pair of low noise n channel JFETs configured as a push push doubler. Inputs driven in antiphase so that each FET conducts ffor opposite 1/2 cycles with the 2 FET drains connected in parallel. A bypassed

[time-nuts] New software versions of EZGPIB and PLOTTER available

Hi folks, i would like to announce that new versions of PLOTTER end EZGPIB are available. Ulrich, some points for additional features (maybe the latest version has these already?): * Settings such as trace color, Values Format, highlighted traces etc get lost when re-loading the

Re: [time-nuts] New software versions of EZGPIB and PLOTTER available

Cool Ulrich! Professional quality program, for sure. Thanks, Said ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts

[time-nuts] Austron 1210D-03 Manual?

I managed to pick up the Austron 1210D-03 portable clock that was offered up here a little while ago, and the thing is ticking away nicely on my bench. However, I don't have any docs for it, and in particular the PPS sync and slew controls on the front aren't entirely self-explanatory. Does

Re: [time-nuts] Austron 1210D-03 Manual?

John - I also have the same clock. Mine came from ebay so I am sure I paid a lot more for it than you did, HI. I did an initial checkout and it seems to work fine. All of the NiCd batteries in it are dead and I have not done anything with the clock till I can find some suitable replacements. I

[time-nuts] Austron oscillator coarse adjust?

While messing with the 1210D-03 I found that the frequency is a bit low (about -1Hz) and is beyond the range of the fine adjust on the front panel. There's a coarse adjust hole on the rear panel, but using various tuning tools including a long, thin screwdriver I can't seem to engage the

[time-nuts] ARRL FMT

The announcement for the 2006 Frequency Measuring Test has finally appeared at the ARRL Web site. For those of you that might be interested go to: _http://www.arrl.org/w1aw/fmt/_ (http://www.arrl.org/w1aw/fmt/) 73, Don, W4WJ ___ time-nuts

Re: [time-nuts] ARRL FMT

It is back to the previous method of sending a clean CW signal. I did not participate previously, so I have no experience with the test. If I understand correctly, they will transmit on all 3 frequencies simultaneously, but we are supposed to measure only the specific band they announce at a

Re: [time-nuts] ARRL FMT

They only do their measurement at the time they announce each band, but all the signals are running simultaneously so you can use them if you dare. John Didier Juges said the following on 10/27/2006 09:06 PM: It is back to the previous method of sending a clean CW signal. I did not

Re: [time-nuts] ARRL FMT

In a message dated 10/27/2006 9:07:02 P.M. Eastern Daylight Time, [EMAIL PROTECTED] writes: It is back to the previous method of sending a clean CW signal. I did not participate previously, so I have no experience with the test. If I understand correctly, they will transmit on all 3

Re: [time-nuts] 5 MHz Frequency Doubler (Dr Bruce Griffiths)

Christopher Hoover wrote: Dr Bruce Griffiths wrote: The design is probably a pair of low noise n channel JFETs configured as a push push doubler. Inputs driven in antiphase so that each FET conducts ffor opposite 1/2 cycles with the 2 FET drains connected in parallel. A bypassed

Re: [time-nuts] ARRL FMT

[EMAIL PROTECTED] wrote: Hi Didier... The official readings are taken for the band that is announced. Even though the exciters at W1AW are left on for an extended period of time before the test, there is some drift during the test period. I would suggest that you listen on 160