I still have my old Swan 3-drify - it works and I make the the odd contact with it every so often It also sounded good on AM as do the Drakes. Have made several contacts using the 1-DER 40 at mw out to the 80m endfed wire, up 5m. The button at the right will take you to a slide show summarizing most of the information on this site. Can't go wrong with this rig. The noise blanker will remove most noise to dB down. But the Swan's audio was quite good without processing, and these days I would run it stock.
The sweep tube was designed for very high peak to average current characteristics.
A One-Tube, Push-Pull Transmitter
If performing self service, be aware of the dangerous high voltages. All tubes except 12AX7. Complete tube set for all transmitter and receiver tubes with matched gain, plate current power amp tubes 6CL6 driver. A crystal calibrator was an option. Giving the rig the ability to run on batteries is a nice touch as many hams nowadays are unlikely to have a power supply that can supply the 90V and 1. If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager.