emanuel stiebler wrote:

> Here is a copy of an old mail (12 mai 1998)
> 
> very short list of old dec monitors...

> vrt19-da & d4 1280x1024 70kHz 66 Hz
> 
> very short of old TC-cards ...

> pmagb-ba/bb hx 1280x1024 72 Hz
> pmagb-bc/cby hx 1280x1024 (60 or 72 Hz)
> pmagb-ba/cy hx 1280x1024 (66 or 72 Hz)

This might be relevant...

The later VRT19 monitors auto-synced between the 66 and 72 Hz timings. 
At least one older VRT19 (I think it even had the same DEC sub-model
number) had a switch at the rear to select which rate to use.
__
David Burren