blank pcb,s can any one id these please

[Refugee]

Would the fourth one be the output stages for the third one that does indeed look like a radio?
The output transistors have not been fitted but the speaker connectors have.

[Keithstv]

Looking at the third one more closely I suspect it would use OC44 & OC45 transistors as there appear to be pads for the feedback/neutralising components in the IF stages. It also looks to have the audio amplifier stages but it's difficult to see if it's a transformer coupled amp or is a complementary pair. Any way it looks like an early 60s design.

The 4th one has a silicon transistor so I would suspect that as being a 70s design.

All the boards look as if they have been laid out by hand, none of this modern CAD stuff used back then.

Keith

[pwdrive]

""Looking at the third one more closely I suspect it would use OC44 & OC45 transistors as there appear to be pads for the feedback/neutralising components in the IF stages. It also looks to have the audio amplifier stages but it's difficult to see if it's a transformer coupled amp or is a complementary pair. Any way it looks like an early 60s design""

The first solid state superhet I made was from a design in a mag (PW?) circa 1964 (ish) it used weyrad round IFT's plus OC44- 45 etc, I can't remember if there was a custom PCB for it at the time, there might well have been, I ended up building mine on a sheet of paxolin, all the small component holes being made with a sharpened up cheapo jewelers screw driver set (needs must)

Lawrence.

[AlanBeckett]

Perhaps No.3 never got built because it was drilled from the wrong side with a very blunt Drill

Alan

[pwdrive]

I reckon Alan possess night vision as well.

Lawrence.

[FIXITNOW]

cheers guys