Some time ago I tried to build a 10 watt amplifier for all HF bands. I found one designed by Harry lythal SMOVPO. See 10 watt hf amplifier It did work but I had problems making it work for all bands between 3 and 30 MHz. If I remember correctly it worked fine up to 10 MHz. It was unusable back then.It should be fine for 40 meter though. I will try to make this amplifier work again. The output transformer and the input transformer are missing so my next task is to build these transformers again.
Meanwhile I found a suitable enclosure for the transverter. On I flea marked I bough a automatic printer switch. It is obsolete but it is build in nice a solid metal box.That box makes an ideal enclosere for the transverter.
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