Re: [time-nuts] FA-2 questions

Hi So that would suggest there are at least two versions “in the wild”. Sounds like figuring out how to update the firmware might be worth doing ….. Bob > On Oct 31, 2019, at 12:32 PM, Bob Darlington wrote: > > Mine showed up today. Firmware rev is V20190922. > > BNC connectors were a bit

Re: [time-nuts] FA-2 questions

Mine showed up today. Firmware rev is V20190922. BNC connectors were a bit loose and rattling but that was an easy fix. Otherwise it looks good. -Bob N3XKB On Sat, Oct 26, 2019 at 5:14 PM Bob kb8tq wrote: > > So another question: what firmware / rev’s do people have now? > > Bob > >

[time-nuts] FA-2 questions

If you have a terminal connected, the FA2 outputs the version info when you switch it on. --- > I'm not sure of a way other than turning it on and quickly reading the screen > to see the firmware rev. Mine is V20190827. ___ time-nuts

Re: [time-nuts] FA-2 questions

Hi Taking the “questions” topic in a bit different direction ….. If the FA-2 is like the other projects from the same people, there is active work being done on the project. That is likely to create updated code for the device as issues are spotted. Is anybody on the list linked into that side

Re: [time-nuts] FA-2 questions

I agree completely. A friend and I each had one of these and thought there was something wrong with each of them. The dither at 10 MHZ compared to a gpsdo is approximately 10 Hz. We spent many hours with the manual trying to find the cause of the fm to no avail. It's just a bad design.

Re: [time-nuts] FA-2 questions

HP8656 and spectral purity should not be used in the same sentence. I had one and the best band is VHF where it may be usable for SSB or NBFM if you are not too picky. It gets worse from there going up. The worst is the lower band (HF) because it is actually the high band mixed down.

Re: [time-nuts] FA-2 questions

Hal wrote: "dickw1ksz at gmail.com said: >/provide frequencies at 72.5, 725 and 7,975 MHz that are / What's interesting about 72.5, 725, or 7975 MHz?" Nothing, unless you're using those frequencies. But, if you want to

[time-nuts] FA-2 questions

No, the power switch turns off all power. See my post about the warm up characteristics of the FA2 OCXO: http://lists.febo.com/pipermail/time-nuts_lists.febo.com/2019-October/097803.html --- >First, does the internal OCXO run when the power is turned off?

Re: [time-nuts] FA-2 questions

The hp8656 spectral purity may be a problem. Residual FM for output frequencies above 494MHz is < 15 Hz rms ( 0.3 to 3 kHz BW ). (The B version is better by about a factor of 2) Dave Perry Sandeen via time-nuts wrote: >Yo Bubba Dudes!, >First, does the internal OCXO run when the power is

[time-nuts] FA-2 questions

Yo Bubba Dudes!, First, does the internal OCXO run when the power is turned off? Wrote: We are presently experimenting using a ISC570B  multiplier at 100 MHz and get 13 digits seeattached but the data out of the back is only 12 digits reliable. Looking it up I found out that the ISC570B is a