I got twenty 10 MHz rocks from a guy in China a while ago.
It was just a few dollars for 21 pieces. The original purpose
was to build a 10 MHz TRF receiver.
I don't think any of my legacy signal generators are stable enough to
characterize these rocks, but the 5680a should do nicely with a bit
of hacking into the rs232 port.
On 12/29/2011 03:53 PM, Chris Albertson wrote:
On Thu, Dec 29, 2011 at 10:37 AM, Said Jackson<saidj...@aol.com> wrote:
Good enough as a portable frequency counter reference, as the offset can be
compensated, and the output is fairly stable...
These units could really use gps disciplining and a crystal post filter.
Great stuff for $40, new they must have been over $1000.
I had actually thought about a crystal latice filter I think I can
find three 10MHz crystals and put them in series. The trouble is
I'm not sure what problem the filter might introduce and I don't have
a way to measure the filter's performance
I'm thinking of adding an RF amplifier using just one 2n5109 and an LC filter.
Chris Albertson
Redondo Beach, California
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--
Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc "The High Reliability Software"
10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430
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