[hpsdr] Thunderbolt GPS

[Henry Vredegoor]

Hi Francis, All,
 
What PLL board are you referring to?
 
I just connected my Thunderbolt 10 MHz output straight to the Atlas bus
(C-16)  and it seems to work. (Via a 100 nF capacitor)
 
Quick and dirty, but it's a really nice experience to tune to DCF77 at 77.5
KHz long wave (as you may know one of the Time/Frequency transmitters here
in Europe), using an IF-bandwidth of only 25 Hz and be spot on, in one go!
No tuning from wider IF to the final 25 Hz IF-bandwidth to be able to "find"
the station amongst (believe me!)  a lot of man made QRM at my temporary
QTH, being in the center of my home town, using only a provisional indoor
antenna of some length of wire!
 
But of course the proper way of interfacing my HPSDR setup, using Excalibur
on the Atlas-bus would be my preferred solution.
 
I hope Excalibur will be available as a kit without the TXCO; it saves some
money for the people with an external precision frequency source.
If not, I hope that bare boards will be available at some time, so people
can build their own version.
 
73's,
 
Henry.
 
 

-----Original Message-----
From: hpsdr-bounces at lists.openhpsdr.org
[mailto:hpsdr-bounces at lists.openhpsdr.org] On Behalf Of FRANCIS CARCIA
Sent: maandag 17 augustus 2009 22:06
To: hpsdr at lists.openhpsdr.org
Subject: [hpsdr] Thunderbolt GPS



Hi all,
I also picked up a Thunderbolt and wonder if it is a good idea to connect it
to a PLL or just build a level shifter to drive the Atlas? The same PLL
board could be used as an interface but only populate the parts required to
make the clock connection. Frank WA1GFZ 

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