QRO 160 / 80m remotely controlled PA by OK7GU (2011)
For my remotely controlled QTH I needed a robust, reliable, remotely controlled powerfull PA for 160 and 80m.
The best way to get one was to construct a PA by myself....
After some time I evolve this unique product:
- Using 2pcs of SRS457 reliable robust tubes, Ua=5kV, Ia=1A, 3kW out
- 100% Remotely Controlled with On/Off switching, heating, band switching (160m, 80m CW, 80m SSB) and remote indication
- Robust Power Supply with 3 powerfull three-phase (3x400V) toroidal main transformators and six-pulse bridge rectifiers, no elyts