Working the ISS - Notes
A few notes from the IORS team designers on the capture effect and hints for operating techniques ...
* If you have tried satellite contacts in the past, follow the same recommendations you learned for a U/V satellite you've worked through.
* The ham radio good operator rule--try your contact when you hear no one transmitting.
* Listen between 1 and 6 AM your time or whenever it is an “off peak” ham radio quiet time in your area.
* Wherever you live, think about the area of the world around you that has the least ham radio activity--next, check for the time the ISS footprint is in that least-ham-radio-activity area, and then try your contact. For instance, for people in Illinois, when the ISS footprint is over Lake Michigan or heading to Canada, try your contact. Same idea for the US coasts or large national forests, etc.
* The ham radio good operating recommendation for all modes -- run minimum power - 5W - into a 7 dB gain antenna on the uplink.
When tons of people are transmitting at once with more power, the capture effect doesn't allow signals to get through.
It will calm down after a bit and get easier to work our new asset in the sky!