Why Mode J is nice for roving satellite operations.

This week I operated from several grid squares.  EM25, EM26, and EM14 in Oklahoma.

It is very easy to operate mode J portable for several reasons:

  1. No need to adjust uplink frequency.  You can camp out on a single TX frequency and only make adjustments to RX as necessary.
  2. No need to use a directional uplink antenna.  2m is far more forgiving.  I was transmitting into a 19″ whip on the center of my roof, receiving on a 3 element 70cm yagi with a preamp.
There are trade-offs, of course, using such a setup.  You cannot peak your uplink signal, for one, meaning you cannot easily stomp deaf lids and interference to SO-50.  

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