Vincent, 2KW $179 ebay http://goo.gl/MxYh5E > Yes, if ebay offer's a class D 2KW "VLF" amplifier I'll join the dreamers band TX OM's. -- 73! Alex R7NT 136.73.ru
Eike, I use a different idea on LF from 2013 http://136.73.ru/d_pa/d_pa.htm IRAUDAMP7S-150 - abt 200-220W RMS Output on 136 (one ch) at very long beacon's time with abt 90% total efficiency (~220V
May 7-8 Best QRB/reports WSPR15 / WSPR2 (>500km) / OP32 / OPds32 : 21:18 136 R7NT de G3XDV Op32 2835 km -40 dB F:13% in Welwyn with 200w + EsLoop (2) 23:18 136 R7NT de PA7EY Op32 2492 km -37