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  1. K

    Yaesu FT-847 refresh

    Dear Yaesu; I am kinda of new to the ham hobby, (but not new to radio) and I seemed to have missed somthing. ICOM has an HF/VHF/UHF all mode unit for the base. Kenwood has one too. You used to have one, in the FT-847 model. So why don't you dust off those old FT-847 plans, maybe...
  2. K

    Satellite Footprint Formula

    Does anyone know a formula I could use to determine the maximum possible footprint of a satellite at a given height? It's just for kicks mostly, but I'd like to find out how far one could get with a repeater connected to a balloon. So what is the formula to find the length of arc AB given...
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