[time-nuts] neon/nixie clock

Can't recall this clock been mentioned on timenuts before: http://wwwhome.cs.utwente.nl/~ptdeboer/ham/neonclock/ -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what

[time-nuts] neon/nixie clock

Poul-Henning Kamp- Can't recall this clock been mentioned on timenuts before: http://wwwhome.cs.utwente.nl/~ptdeboer/ham/neonclock/; __ Actually the idea isn't that unique and anyone who remembers the decatron tubes have seen the entire decade built into a single

[time-nuts] GPS antenna distribution from a DTV multi switch

Have been using a sat passive splitter and most of my cables are using F connectors so I'm thinking of modifying a DTV multi switch to provide 5 volts instead of 13 volts on the LNB/antenna port. Antenna is a Trimble bullet II 5 volt antenna. The switch is active and I would ignore the 22Khz

Re: [time-nuts] HP 11729C versus 11848A

Thanks to Rick's great hint, I'm now awaiting some AM123 amps to arrive. Why is it that I just don't get better than -165...-170 dBc/Hz? Let me try some simple math: At L and R levels of +7.5 dBm (that's what come out of my 10811's), subtract some 7.5 dB mixer conversion loss to see that 0 dBc

Re: [time-nuts] HP 11729C versus 11848A

Minus the 6 dB L(f) conversion factor, so we get theoretical L(f) noise floors of -176 dBc/Hz and -191 dBc/Hz. Adrian Adrian schrieb: Thanks to Rick's great hint, I'm now awaiting some AM123 amps to arrive. Why is it that I just don't get better than -165...-170 dBc/Hz? Let me try some

[time-nuts] HP 53132A VFD

All, I know this question comes up occasionally but has anyone discovered a source for replacement Vacuum Florescent Displays (VFT) for the 53132A counter? As I understand, these are HP/Agilent p/n 5040-0023, Samsung p/n INB-12MM53T. Rick W2GPS

Re: [time-nuts] HP 11729C versus 11848A

Hi Just to be picky: You get 6 db for SSB to DSB when you are looking at a modulation effect (correlated sidebands) and 3 db when you are looking at random noise (un-correlated sidebands). If both oscillators contribute equally, you get a 3 db factor. The total can be anywhere from 3 db to 9

Re: [time-nuts] GPS antenna distribution from a DTV multi switch

 I've opened it up and it ( a eagle aspen DTV4X8 ) has two lm317's maybe for 18 and 13 volts as well as a ua78m06 for the amps and volt/22Khz switches. Pictures here : www.n4iqt.com/dtv4x8 Stanley ___ time-nuts mailing list -- time-nuts@febo.com To

Re: [time-nuts] GPS antenna distribution from a DTV multi switch

Hi There's a *lot* ore in there than in a normal GPS splitter. Bob On May 8, 2010, at 8:24 PM, Stanley Reynolds wrote: I've opened it up and it ( a eagle aspen DTV4X8 ) has two lm317's maybe for 18 and 13 volts as well as a ua78m06 for the amps and volt/22Khz switches. Pictures here :

Re: [time-nuts] GPS antenna distribution from a DTV multi switch

Yes, not using most of it.   Has a 22khz tone and voltage level detector for all 8 outputs I don't need, but my cost with power brick was $10, ebay has them under $20 now. Stanley - Original Message From: Bob Camp li...@rtty.us To: Discussion of precise time and frequency