UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Ekco ARG134

ms660 · 9th Nov 2019, 2:33 pm

Ref Post#9: That sounds like the Trader sheet for the A104.

The ARG134 manual doesn't give any valve voltages but the voltage tables for the A104 can be used with the proviso that the anode voltage of V2 (IF amplifier) in the ARG134 will be lower, that's because V2 is used as the 1st AF amplifier when Gram is selected, in effect the value of the anode feed resistor has been increased (still decoupled at IF) so it can serve as the anode load for AF (Gram)

Lawrence.

9th Nov 2019, 2:33 pm	#11
ms660 Dekatron Join Date: Apr 2011 Location: Cornwall, UK. Posts: 13,454	Re: Ekco ARG134 - beyond repair? Ref Post#9: That sounds like the Trader sheet for the A104. The ARG134 manual doesn't give any valve voltages but the voltage tables for the A104 can be used with the proviso that the anode voltage of V2 (IF amplifier) in the ARG134 will be lower, that's because V2 is used as the 1st AF amplifier when Gram is selected, in effect the value of the anode feed resistor has been increased (still decoupled at IF) so it can serve as the anode load for AF (Gram) Lawrence.