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> 2 x mullard PFL200 valves -tested- very good
2 x mullard PFL200 valves -tested- very good
2 x Mullard PFL200 Valves Tested- very good
2 x Mullard PFL200 Valves -Tested- very good
These two Mullard PFL200 double pentode valves have been tested on an AVO valve tester and have very good characteristics. Markings on both valves are faint and one has a dymo tape on the base to confirm the type.
pentode1 ; Ia = 30 mA & Gm = 21 mA/V for Va = 175 V, Vs = 175 V & Vg = - 2.6 V
pentode2 ; Ia = 10 mA & Gm = 8.6 mA/V for Va = 150 V, Vs = 150 V & Vg = - 2.3 V
Valve 1 pentode1; Ia = 27.4 mA & Gm = 16 mA/V : pentode2; Ia = 10.9 mA & Gm = 7.5 mA/V
Valve 2 pentode1; Ia = 22.0 mA & Gm = 14.4 mA/V : pentode2; Ia = 10.2 mA & Gm = 6.2 mA/V
If collecting in person, strictly cash on collection please.
