Richard Shireby, G0OJF, from TSG Communications, Grantham, Lincs (UK), discusses & demonstrates alignment of the Team Euro 3004UK base station. This set utilises a general purpose Motorola synthesizer PLL chip, so used an Eprom to make it do the uK channels & a separate TX & RX Mixer to achieve the appropriate offsets. It is vital therefore to set up the 10.24 reference oscillator first reading this at pin 4 of the PLL. Then moving over to adjust the TX frequency on the appropriate trimmer capacitor (the one nearest the front) on the PLL mixer sub-board mounted on the right hand vertical chassis member. Part 2 will deal with RX.

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