View Single Post
  #3   Report Post  
Old February 16th 08, 05:43 PM posted to alt.binaries.pictures.radio
Dave Moorman Dave Moorman is offline
external usenet poster
 
First recorded activity by RadioBanter: Sep 2007
Posts: 38
Default General Radio Unit Time/Frequency Calibrator 1213-D - GRC 1213-D.jpg (1/1)

In article 3Iptj.28481$C61.7543@edtnps89,
"Neil S" wrote:

Dave, that unit looks vaguely familiar, especially the "touch point". Have
you any idea how it is used? It looks like you feed in a signal and
hetrodyme it with one of the internal reference choices. That would work for
frequency, but time 'pips' must have been sent to a 'scope' to compare with
the measured pulse stream.
GR sure turned out some 'unusual' stuff.
I really like the " move switch to start divider "; make a defect in design
into a 'feature' :-)

Neil S.

"Dave Moorman" wrote in message
...
Anyone seen one of these? I've had it for 10 to 15 years and have never
seen another like it.

Dave K9SW



Hello, Neil -

The only way I've used it is as a calibrator - never fed a signal into
it.

The touch point is very useful if you have a couple of signals you are
listening to and lose track of which signal is the marker, you can touch
the touch point and the marker signal will change frequency enough so
you can identify it.

I checked eBay regularly for 8 to 10 months and nothing showed up. Now
there is one for sale there.

http://cgi.ebay.com/Vintage-General-...-Calibrator_W0
QQitemZ270211726289QQihZ017QQcategoryZ25399QQcmdZV iewItem

There is also a manual available at BAMA

http://bama.edebris.com/manuals/gr/1213d

So there is some information available about it now. A couple of years
ago there was nothing.