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Fig. 2

image

Experiment GR035: participating telescopes are denoted by their two-letter codes. Stations depicted with a triangle were engaged in the Doppler part of the experiment, with a circle in the phase-referencing VLBI part. Station colour denotes frequency set-up used: red – 8332–8444 MHz, 8 channels of 16 MHz USB (Upper Side Band); blue – 8396–8444 MHz, 4 channels of 16 MHz USB; orange – 8380–8428 MHz, 4 channels of 16 MHz USB; green – 2289–2305/8396–8412 MHz, 4 channels of 16 MHz USB.

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