----- Original Message -----
Sent: Tuesday, September 21, 2004 10:02
AM
Subject: LF: PORTADYNE
Hi All
Has anyone ever heard of a vintage radio called a
PORTADYNE. Radio maybe 90 - 100 years old. It has 4 valves, which are missing.
Unusual valve bases 4 pin with one pin offset, bases look small. It has a loop
antenna wound around the inside of the cabinet. It has a rotary base plate to
swivel the radio for best reception. The case is the usual polished
wood.
Any help appreciated for restoration work, cct
etc or original box !!
73 de Mal/G3KEV
Valves sound like ordinary 2 volt filament
series.pin spacing 1.6cm approx.types PM2LF/HL etc, grid is pin with closer
spacing anode opposite.
Line up possibly:-HF Amp(pentode, anode terminal
on top)...Det(triode) ...audio amp (also triode)... O.P (Triode/possibly
pentode.term. on side of base)
Laurie.
