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Nova tracking

Dear Lawrence,
here some infos from the Nova Help file. They will help you writing a
program for serving a tracking rotor interface.

DDE Output from Nova for Windows
Dynamic Data Exchange (DDE) Specifications for Nova for Windows

Nova for Windows (NfW), both 16- and 32-bit versions, can act as a DDE
server. The program can supply satellite tracking and range-rate data to any
standard DDE client application; this information may be used to implement
customized interfaces for antenna tracking or radio tuning.

Following are general specification for DDE as implemented in NfW. Note that
all names and strings are case sensitive.

DDE Server name : NFW_SERVER

DDE conversation : NFW_DATA

DDE is initiated when the server (NfW) receives the string TUNE ON. The
AutoTracking Status Box must be displayed in NfW although autotracking does
not have to be activated.

When DDE has been activated, a single string containing the following data
are "transmitted" 2-10 times per second (depending on CPU speed and loading)
via DDE:

SatName AZ:Azimuth EL:Elevation RR:RangeRate


SatName = the current autotracking satellite name as derived from the NfW
database, maximum 12 characters;

Azimuth = current satellite azimuth, 0.1 degree precision, no sign;

Elevation = current satellite elevation, 0.1 degree precision, signed;

RangeRate = satellite rate of change of distance from the observer expressed
as a signed floating point number in units of 1/the speed of light.

One space separates each field; no space after (:) labels. Make no
assumptions about field lengths or total string length. Values are referred
to the current AutoTracking Observer in NfW at the current UTC time and

Sample DDE string:

Mir AZ:116.4 EL:-21.0 RR:-1.4396996895

DopplerHz = -FreqHz * RR * (1.0/299792.458)

-----Original Message-----
From: owner-AMSAT-BB@AMSAT.Org [mailto:owner-AMSAT-BB@AMSAT.Org]On
Behalf Of Lawrence Williams
Sent: Freitag, 12. Januar 2001 13:53
To: amsat-bb@AMSAT.Org
Cc: nlsa@nlsa.com
Subject: [amsat-bb] NOVA & IF100 Help

I was writing to M. Owen about NOVA for Windows and he said:


We have not been able to get "inside information" to
write a Windows driver for the IF-100.


Can somebody here provide Michael R.Owen nlsa@nlsa.com with the IF100
details so that
the IF100 users can enjoy NOVA for Windows ?

thanks & rgs lawrence (DL1FLW  ex DA1LA  ex 9H3WR)

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