Probably a World War II or Post-War era (ca. '40s to '50s) four tube superheterodyne receiver design with what seems to a dual diode / power output pentode, a half-wave rectifier and two triode / heptode vacuum tubes.
Best to still keep such analog devices around as contingency just in case Second Artillery Corps (SAC) of the People's Liberation Army (PLA) decide to lobe a couple of nuclear tipped Dōng Fēng or Jù Làng ICBMs / SLBMs with MIRVs capability at Sydney, Australia.
Well, I did but a new radio for $45. Made in China.
The ones I have are 60s/70s era radios that are made in Germany.
There is no comparison, the sound from German made radios of that time is really fantastic.
You got to hear one which is working to understand what I mean.
One of them even has a tweeter and bass/mid-range i.e. 2 speakers!
True hi-fi sound which cannot be replicated today.
I called them. Boss is Chinese speaking. He says he has a technician who knows how to service transistor radios. Thanks for the contact! I am sure it is useful for people here who need to service their radios.
Went to the shop this afternoon. The chinese man turned out to be a chinese lady. Its just a collection point for equipment to be serviced. Lots of old hi-fi stereo sets and amplifers etc for service. She called someone else using her mobile phone and told me that the radios cannot be repaired as there are no spare parts available! She apologized and said that she could not accept the radios for repairs.
Oh well, have to look around for another place to repair my radios.