[Hackrf-dev] 10MHz clock

[Simon Brown]

The rubidium is ‘0.5 V RMS into 50 ohm sinewave’ so I need feedback from the hackRF team here, if it would be OK we’ll buy a few.



Simon Brown G4ELI
http://v2.sdr-radio.com

 

From: Karl Koscher [mailto:supersat at cs.washington.edu] 
Sent: 19 August 2014 07:49
To: Simon Brown
Cc: hackrf-dev at greatscottgadgets.com
Subject: Re: [Hackrf-dev] 10MHz clock

 

According to the HackRF schematic, CLKIN expects a 10 MHz, 3.3V CMOS signal. According to http://www.perdrix.co.uk/FrequencyDivider/, the Thunderbolt has a 2.5V peak-to-peak AC signal, so it needs to be run through a clock shaper to drive the HackRF. 

 

But this is just a guess.

 

On Mon, Aug 18, 2014 at 11:18 PM, Simon Brown <simon at sdr-radio.com> wrote:

Hi,

 

Would a Thunderbolt signal lock on a hackRF?

BTW is it hackRF or HackRF ???

 

Simon Brown G4ELI
http://v2.sdr-radio.com

 

From: Chris Kuethe [mailto:chris.kuethe at gmail.com] 
Sent: 19 August 2014 07:14
To: Simon Brown
Cc: hackrf-dev at greatscottgadgets.com
Subject: Re: [Hackrf-dev] 10MHz clock

 

I was just going to say "Trimble Thunderbolt?" I guess it's not less portable than a laptop and power brick, but that ovenized oscillator is going to be tough to power from USB.

 

On Mon, Aug 18, 2014 at 10:54 PM, Simon Brown <simon at sdr-radio.com> wrote:

Hi,

 

Please suggest a 10MHz solution for the clock in, this question has been asked in my Yahoo! group and I have no idea. Is this documented anywhere? Would be interesting to have a portable solution rather than carrying a big Rubidium standard around J . Would my Trimble Thunderbolt work?

 

Toodles…

 

Simon Brown G4ELI
http://v2.sdr-radio.com

 


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-- 
GDB has a 'break' feature; why doesn't it have 'fix' too? 


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