UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Spy Set SSTR-1

Keith · 10th Feb 2018, 2:11 pm

It's the difference between audio use and RF PA operation. For CW the valve will be in Class C with nominally 66% efficiency. For 12W anode dissipation this can give an RF output of up to 24W.

10th Feb 2018, 2:11 pm	#18
Keith Heptode Join Date: Jan 2003 Location: Tewkesbury, Gloucestershire, UK. Posts: 693	Re: Spy Set SSTR-1 It's the difference between audio use and RF PA operation. For CW the valve will be in Class C with nominally 66% efficiency. For 12W anode dissipation this can give an RF output of up to 24W. __________________ Keith Yates - G3XGW VMARS & BVWS member http://www.tibblestone.com/oldradios/Old_Radios.htm