[time-nuts] HP5090A Off Air Standard Receiver
stephen at tompsett.net
Mon Jun 19 08:41:01 EDT 2017
How about building a frequency converter to produce 200KHz; mixing the
incoming RF (198KHz) with 2KHz derived from the output of the unit,
On 18/06/2017 21:17, GandalfG8--- via time-nuts wrote:
> 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....
> 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
> 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.
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.
More information about the time-nuts