Server Program - Simon has provided complete instructions in the Satellites.pdf file. If you haven' got a copy you can download it from http://www.ham-radio.ch/doc/Satellites.pdf/. As I couldn't hope to improve on them, I've taken the liberty of reproducing them here - essentially as written.

HRD provides Doppler shift correction for the satellite uplink and downlink frequencies while tracking a satellite. HRD needs a DDE connection with a program providing Range Rate information to generate the Doppler shift correction. HRD currently supports Ham Radio Deluxe (Nova) – this is the Nova-compatible data generated by HRD, Nova, Satscape and WXtrack.

If you have already started the HRD DDE server you can now select the Ham Radio Deluxe (Nova) server. If you have not yet started the HRD DDE server then you must start and configure one of the other programs.

· Select the server program you have started.
· Press Start.

If the connection is successful you will see output similar to that shown above. The important field is Range Rate – this is used to compute the Doppler shift and hence the radio frequency offsets.
Frequencies - This window is used to adjust your radio’s uplink and downlink frequency. The Doppler Effect is the apparent shift in frequency of a wave due to the relative motion of source and observer. Doppler shift is calculated in accordance with Kepler’s laws.

UPLINK (TX)

VFO - The VFO used for the uplink. Check the Active box if the value displayed in the Radio field is to be applied to your radio.

Radio - The radio frequency as computed by HRD taking Doppler shift into account.

Transverter - If you are using a transverter enter your transverter’s intermediate frequency here and check the [X] box. If you are not using a transverter either leave this field empty or do not check the [X] box. The Radio frequency is calculated as: Satellite – Transverter + Doppler shift.

Satellite - The satellite uplink frequency. The Select button accesses a popup window so you can select a satellite frequency from your Favourites definitions.

Lock - The satellite frequency can only be set by entering a new value in the Satellite field. Changing the frequency via the Ham Radio Deluxe display will not have any effect.

Downlink (RX) - The downlink fields are the same as the Uplink fields.

Various

Ignore zero / no range rate - Some programs , such as Satscape, do not return data if the satellite is not visible. (HRD and Nova always return the correct range rate even if the satellite is not visible.) If you want the last valid settings to be maintained when data is no longer returned because a satellite is not visible you must select this option.

Frequency Resolution - Select your radio’s frequency resolution. Typically Yaesu radios have a resolution of 10 Hz whereas ICOM have a resolution of 1 Hz. It is important that you select 10 Hz if your radio only has a 10 Hz resolution otherwise internal auto- tuning logic in HRD will not function properly. If in doubt set this to 10 Hz.

Update Radio - Select how often the radio frequency is compensated for Doppler shift:

· When frequency changes (when new data is received from the DDE server) or

· Every n seconds where n is a value between 0.5 and 60.

The first option will usually be acceptable; the only reason for selecting the second option is if your computer or radio cannot keep up with rapid changes of frequency.

Other - The other options are:

· Up > Dn – copy the Uplink satellite frequency to the Downlink satellite frequency.

· Dn > Up – copy the Downlink satellite frequency to the Uplink satellite frequency.

· Up <> Dn – exchange the Uplink and Downlink satellite frequencies.

Dual Radio Support - Configuring Ham Radio Deluxe for dual radio support is very easy, just follow these steps to use Radio A for the downlink (RX) and Radio B for the uplink (TX).

Downlink:

· Start the first instance of HRD
· Start Satellite Data
· Select the satellite
· Start the DDE Server
· Start Satellite Tracker
· Enter the downlink frequency
· Connect to the Server Program which will be Ham Radio Deluxe (Nova).

You have now configured the downlink.

Uplink:

· Start the second instance of HRD
· Start Satellite Tracker
· Enter the uplink frequency
· Connect to the Server Program which will be Ham Radio Deluxe (Nova), this will be the data supplied by the DDE server in the first instance of HRD used for the downlink.

You have now configured the uplink.
Created 2004 by Kevin Crockett. Comments and suggestions may be e-mailed to