[time-nuts] HP5090A Off Air Standard Receiver
GandalfG8 at aol.com
GandalfG8 at aol.com
Sun Jun 18 16:17:46 EDT 2017
Hi Pete
That's quite good timing, if you'll pardon the expression:-), as I uploaded
a pdf version of the 5090A manual to mediafire a couple of months ago....
http://www.mediafire.com/file/u0bf1eips89uo3h/HP_5090A_Ops_and_Service.pdf
I know a few others have considered converting the 5090A to 198KHz but it's
not straightforward and I believe the general consensus has been that it's
not really worth the effort.
I have a 5090B which I'm hoping to get up and running when it finally
reaches the top of the to do list and my view is that it would be much better to
leave the original electronics undisturbed and to drive it with a 200 KHz
signal divided down from a from a GPSDO or a rubidium module, although
having one of the latter already running at 800KHz does leave me a bit
biased:-)
Regards
Nigel, GM8PZR
Does anyone happen to have an electronic copy of the user / technical
manual they would share with me?All expenses covered.
This rather unusual unit was produced in the UK in the days or the rather
sensible 200kHz Droitwich transmissions.
Im considering reworking the unit to the newer 198kHz standard.
PeteG4GJL
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