Restoration novice part 2

[LyntonP]

Not sure Frank? Still a couple of bits and pieces on the Philips to finish, but there is a large Hallicrafters waiting in the wings!
To be honest a Grundig would be nice Yacht Boy type thing or even a Bush like I used to own years ago but they are a bit pricey!
Lynton

[tim.norris]

Lynton , well done , ive dug out an old Roberts r66 battery /mains radio for you to play with . thats if you want it of course . more fun with valves ! . will be down there next week , regards, tim

[Nuvistor]

I had forgotten about the Hallicrafter, looks like you have Roberts on the way.

[LyntonP]

Originally Posted by tim.norris

Lynton , well done , ive dug out an old Roberts r66 battery /mains radio for you to play with . thats if you want it of course . more fun with valves ! . will be down there next week , regards, tim

Yes of course Tim Thank you that would be great
Lynton

[LyntonP]

On both the trader and manufacturer circuit diagrams there is a connection for an external AM aerial but this is not present on my set only a ferrite rod aerial. Since my shed is all metal the signals inside are minimal. Is it possible for me to rig something up? The manufacturers sheet shows a coil in the vicinity of the ferrite rod but no real detail.
Lynton

[Nuvistor]

You could replicate the circuit with a link coil around the ferrite rod, any capacitors you use to connect to the aerial or earth will need to be Y types. Use insulated wire for the link coil. The coil should only require a few turns but will require a bit of experiment.

I only have the R&TV book circuit but the capacitors in that diagram are C63 and C65.

[buggies]

When I worked in a (mostly) metal factory, we strung out long wires above the factory metal roof and brought the wire down into the final inspection screened booths at the end of the transistor radio production lines.
In the booth we mounted a standard ferrite rod to the wall and wound the wire in a coil for the length of the rod with the far end connected to (mains) earth.
This produced sufficient signal when the completed receiver was placed parallel to the rod.
Note - these were used only as a final listening test after sig gen alignment.

[WaveyDipole]

https://www.radiomuseum.org/r/marconi_t89da.html
https://www.radiomuseum.org/r/marconi_t89da.html

Your radio doesn't have the sockets on the far left and right on these photos?

[LyntonP]

It has both. The ones on the left are marked for FM dipole and on the right is an ext speaker.
Lynton

[WaveyDipole]

Ah, I could see the pair on the LHS was for FM, but couldn't quite make out the label on the RHS pair and assumed it might be for an AM antenna. My apologies.