Total posts : 45366
From the connection instructions that are shown on a transmitter it appears that the transmetter operates in one of two states, both FCC accepted.
Mode 1 uses a random wire about 3 meters long and an internal random wire tuner to match the transmitter to the antennna for the frequency chosen.
Mode 2 is initialized by swicthing the unit output from the random wire binding post to the F connector labeled “External Antenna.” The switch appears to route the transmitter output away from the auto tuner and to a direct connection to the back panel.
In Mode 2 the transmitter seems to work as an exciter and the external amplifier in the final output stage. It also appears to be hardware limited to 100 MW.
Because it is a unit designed to be set up outside there is what looks like a 102″ CB whip that appears to be permanently attached to the ATU (is that correct, MRAM?) and the I’m guessing that either the ATU has a matching network inside, or that the RF out from the transmitter still uses the matching network in the transmitter, but in a slightly different way..
Experimental broadcasting for a better tomorrow!