[time-nuts] Lady Heather Question

[Mark Sims]

There are two types of Oscilloquartz GPSDOs appearing on Ebay:

For now, I would avoid the OSA-4530.  I have been unable to talk to it.  The version being sold now may have  non-standard firmware.   All commands return an "unknown command" error.

The Oscilloquartz GPSDOs that use the Star-4 module work well with Lady Heather.  The first versions that were released needed some modification to connect the "management interface" to the RS-232 port, but the later versions have the mod. 

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> Or would it be better to buy the OscilloquartzOSA-4530 GPSDO and use LH?