EA3GCY EGV-40, Инструкция по сборке

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EGV-40 CW QRP Transceiver Page 35
WIRING
The EGV-40 wiring is very simple:
-For the antenna connection use RF-rated fine coaxial cable such as RG-174 or similar.
-If you place the polyvaricon outboard, use short and rigid wires as the mechanical stability is important.
-A metal box is highly recommended
Take notice that the EGV-40 is NOT PROTECTED against polarity inversions!
It is a good idea to place a diode (ex. BY255 or larger) in parallel with the PSU input on the EGV-40. The
cathode (the end with the printed band) goes to the positive wire. If your PSU supports shortcircuits or
has a fuse on its output, OK; else you will need to buy or build a cable with an on-line fuse in series.