The lid and top are fitted with the four countersunk screws supplied and the end result is a small screened instrument case with a really professional finish. No more scruffy old die cast boxes, tobacco tins or secondhand enclosures.

Figure 11

    This article has demonstrated how easy it is to work with the FLEXI-BOX. The basic box with the Transmission Line PCB is normally the best starting point for a small RF project. There are several other PCB's available for various circuits and the HF Amplifier has now joined them in our range. The connectors are selected from BNC, SMA and N type and will fit directly onto the aluminium box with no drilling or taping. Could we make it any easier for you? Yes, there is a PCB available for every one of our designs and you can simply fit your own components. Can we make it any easier that that? Yes, there is a ready built version that is manufactured with your selection of connectors. The choice is yours.

    The performance of this circuit is excellent and the characteristics can be perused in FLEXI-BOX HF Amplifier

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