And the bleeder resistors! At 09:26 AM 12/11/2002 -0600, you wrote: >That is correct. > >The normal hysterisis (sp) loss in the power transformer will contribute to >some heat as well as the efficiency of the DC filter system which supplies >current for the TCXO, the front panel LED and etc. > >73 >Bob, K4TAX 73's from KW0D Dave in LeClaire, Iowa