Re: [time-nuts] distribution amplifier

2006-08-26 Thread John Ackermann N8UR
Hal Murray said the following on 08/26/2006 03:39 PM: >>That's interesting. The MAX477 video amp that is used in the TADD-1 >>(http://www.tapr.org/kits_tadd-1.html) does a lot better than that. >>Here is a phase noise plot of the TADD-1 at 10MHz; it is better than >>-105dBc at 1Hz and reaches a n

Re: [time-nuts] distribution amplifier

2006-08-26 Thread Hal Murray
>> I tried this with a Maxim video amp, and my 10MHz noise floor went >> from -155dBc/Hz on the input to about 80-90dBc/Hz on the output >> of the amp. >> 80dBc is great for Video (generally arund 50dB SNR), but for timing >> it's a catastrophe... > That's interesting. The MAX477 video amp th

Re: [time-nuts] distribution amplifier

2006-08-26 Thread SAIDJACK
Hi Ulrich, I think the noisy amp was the Max4017, but I have to check. Great job on the Plotter update! Can't stress how helpfull that tool is. Thanks, bye, Said ___ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/lis

[time-nuts] Truetime GPS-DC Receiver

2006-08-26 Thread philipadavies2004
Subject: Truetime GPS-DC Receiver Dear Sirs Can anybody tell me what model Trimble GPS Module fitted into the Truetime GPS-DC Receiver, and dose anybody have any Circuit information on the GPS trimble module and an the Truetime GPS-DC Receiver? and software information. Please Email: [EMAIL

Re: [time-nuts] distribution amplifier

2006-08-26 Thread John Ackermann N8UR
Would have been useful to actually attach the attachment... Sorry. John John Ackermann N8UR said the following on 08/26/2006 07:35 AM: > [EMAIL PROTECTED] said the following on 08/25/2006 10:23 PM: > >>Hi Didier, >> >>I tried this with a Maxim video amp, and my 10MHz noise floor went from

Re: [time-nuts] distribution amplifier

2006-08-26 Thread John Ackermann N8UR
[EMAIL PROTECTED] said the following on 08/25/2006 10:23 PM: > Hi Didier, > > I tried this with a Maxim video amp, and my 10MHz noise floor went from > -155dBc/Hz on the input to about 80-90dBc/Hz on the output of the amp. > > 80dBc is great for Video (generally arund 50dB SNR), but for timin

Re: [time-nuts] distribution amplifier

2006-08-26 Thread Ulrich Bangert
Hi Said, may I ask WHICH Maxim amp you tried, just for a new collector's item in the list od DOs and DONTs of timing? BTW: A corrected PLOTTER version is availbale with centered main window, no changes otherwise. Regards Ulrich > -Ursprüngliche Nachricht- > Von: [EMAIL PROTECTED] > [ma

Re: [time-nuts] distribution amplifier

2006-08-26 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Didier Juges writes: >It is reasonable to use a standard video distribution amplifier to >spread the good 10 MHz from a stable reference generator? Yes, it works fine. Be aware that very few designed for video distribution amps are isolated so you risk groundloop