[AMRadio] A lot of WWV and NIST discussion

[Robert Nickels]

Leo Bodnar and others offer very good GPSDO products with PLLs that can 
be set to generate any frequency desired (within a range) that is just 
as accurate as the GPS timebase.    But they're a little expensive and 
you may need to search around to find them in the US: 
http://www.leobodnar.com/shop/index.php?main_page=product_info&products_id=234

However, the same technology that allows GPS to be put into mobile 
devices is making precision frequency control much less expensive, to 
the point that anyone can justify it.   This is the cheapest new design 
I've seen and the shipping from Sweden isn't great, but it's only a 
matter of time before this and more like it are available at even lower 
prices:

https://www.tindie.com/products/deBug67/gps-referenced-rf-generator-1hz-to-10mhz/

Note that the RF output on this GPSDO comes configured for 1 MHz but can 
be set as high as 10 Mhz, which is a common timebase reference for test 
equipment.    The nice thing is, these GPSDO are assembled and tested 
and are configured using free u-center software.

73, Bob W9RAN