Nice machine! "Rheinperle" means "Pearl of the Rhine river" ... man, those were creative product names back then! The long wave scale carries the indicators of "Schweizer Telefonrundspruch" and "Deutscher Drahtfunk", channels 1 through 6 (or I through VI). Those were phone line based distribution systems. While the German version ("Deutscher Drahtfunk") was relatively short-lived and discontinued in the 1960s, the Swiss variant ("Schweizer Telefonrundspruch") has survived until 1998. It had to be sacrificed to make room for DSL which uses the same frequencies on the phone line. The bandwidth used on those systems was considerably wider than the usual 9kHz per channel, so the sound quality was comparable to FM on machines that could accommodate the whole bandwidth.
Looking forward to this one Manuel. I'm going to also be revisiting your back catalogue of videos as I have just picked up a Grundig 3028 which will need some work on it. Many Thanks... George
The 3028 is a great one. The first one I saw restored was by an old favourite channel of mine: ua-cam.com/video/RETQ_dqoBZU/v-deo.html He did a great job with it and I can honestly say that he was one of the main inspirations for me starting my channel. Have fun.
I have repaired a radio with a FM tuner supply resistor burnt, it was an alignment variable capacitor leaking. It was a bloody hell to find out, because testing with low voltage of the multimeter it was ok (open resistance), but with high voltage there was a DC leak.
Nice that you always check the o/put transformer primary first. I've had several partly restored radios where eventually the previous repairer got round to testing it. Always disappoints me that so few people are prepared to rewind transformers.
Interesting set Mr. Caldeira... Seems good quality but it's probably pretty hard to work on this peculiar PCB/PTP hybrid. But I can imagine it's far more reliable than those sets that just have the high temperatur output pentodes on the PCB (cold solder joints incoming, haha). Love the big speaker.
Nice machine! "Rheinperle" means "Pearl of the Rhine river" ... man, those were creative product names back then!
The long wave scale carries the indicators of "Schweizer Telefonrundspruch" and "Deutscher Drahtfunk", channels 1 through 6 (or I through VI). Those were phone line based distribution systems. While the German version ("Deutscher Drahtfunk") was relatively short-lived and discontinued in the 1960s, the Swiss variant ("Schweizer Telefonrundspruch") has survived until 1998. It had to be sacrificed to make room for DSL which uses the same frequencies on the phone line. The bandwidth used on those systems was considerably wider than the usual 9kHz per channel, so the sound quality was comparable to FM on machines that could accommodate the whole bandwidth.
Thank you for the explanation, Rolf.
Always good to expand our knowledge.
Man, I enjoy these series so much !
Teslákova laboratoř : good. Glad you like it.
Very nice Radio Model 😊👌👆🙏
👍
Problems are there, to solve it! Can't wait for the first resto-part!
Looking forward to this one Manuel. I'm going to also be revisiting your back catalogue of videos as I have just picked up a Grundig 3028 which will need some work on it. Many Thanks... George
The 3028 is a great one. The first one I saw restored was by an old favourite channel of mine:
ua-cam.com/video/RETQ_dqoBZU/v-deo.html
He did a great job with it and I can honestly say that he was one of the main inspirations for me starting my channel. Have fun.
I have repaired a radio with a FM tuner supply resistor burnt, it was an alignment variable capacitor leaking. It was a bloody hell to find out, because testing with low voltage of the multimeter it was ok (open resistance), but with high voltage there was a DC leak.
I just hope it’s something simple, but we’ll see.
Nice that you always check the o/put transformer primary first. I've had several partly restored radios where eventually the previous repairer got round to testing it. Always disappoints me that so few people are prepared to rewind transformers.
Yes, rewinding is a dying art.
Looks promissing so far. We need more :)
There’s always more to come. Hang in there :)
Interesting set Mr. Caldeira...
Seems good quality but it's probably pretty hard to work on this peculiar PCB/PTP hybrid. But I can imagine it's far more reliable than those sets that just have the high temperatur output pentodes on the PCB (cold solder joints incoming, haha). Love the big speaker.
Should be fun.
Mais um projecto interessante!
Tiago Madeira : espero que sim.