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| Year: 1925 | Type: Radio - or past WW2 tuner | ||||
| Valves / Tubes | 5: UV201A UV201A UV201A or UV200 UV201A UV201A |
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| Principle | TRF without reaction (non reg.dir.receiver) |
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| Tuned circuits | 3 AM circuit(s) |
| Wave bands | Broadcast only (MW). |
| Details | |
| Power type and voltage | Storage Battery for filament |
| Loudspeaker | - For headphones or amp. |
| Power out | |
| from Radiomuseum.org | Model: 7570 Model 20C, 20 Compact [UV-sockets] - Atwater Kent Mfg. Co.; |
| Material | Wooden case |
| Shape | Tablemodel, Box - most often with Lid (NOT slant panel). |
| Dimensions (WHD) | 20 x 6.25 x 6.25 inch / 508 x 159 x 159 mm |
| Notes | The "C" is not shown on the label ! Can also accept UX tubes. There is also the 20C Compact with UX sockets and the 20 big box.! |
| Net weight (2.2 lb = 1 kg) | 5.4 kg / 11 lb 14.3 oz (11.894 lb) |
| Price in first year of sale | 80 $ |
| Collectors' prices | 15 Collector prices (for members Radiomuseum.org) |
| External source of data | Ernst Erb |
| Source of data | Radio Manufacturers of the 1920s, Vol 1, Alan Douglas / |
| Circuit diagram reference | Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931) |
| Mentioned in | Collector's Guide to AR4.Ed.,Bunis, tube |
| Literature/Schematics (1) | A.Atwater Kent, The Man, 2002 |
All listed radios etc. from Atwater Kent Mfg. Co.; Philadelphia, USA
Here you find 473 models, 246 with images and 299 with schematics.
Collection of Lindsay Shepherd (AUS)
Collection of Roberto Montalto (I)
Collection of Volker Jeschkeit (I)
Collection of Giuseppe Antonio Tusini (I)
Collection of Ernst Röggla (I)
Collection of Francisco Gallego (E)
Collection of Hans-Dieter Haase (D)
Collection of Konrad Birkner (D)
Collection of Ralf Sürtenich (D)
Collection of Wolfgang Lohrie (AUS)
Collection of Valery Gromov (RUS)
Collection of Jürgen Bauch (D)
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Hits: 206 Replies: 0
atwater: (Model 20C, 20 Compact); 7570
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Lindsay Shepherd
09.Nov.11 |
1
Reading about the markings (Not Guaranteed) under the metal label on the Model 20 cabinet reminded me that I had found a printed serial number under the front panel brass label while restoring my model.
I attach a photo of the printed serial number hidden behind the front panel label.
I assume that the serial number is under the brass front panel label for some security or warranty purpose. I had to reattach the printed serial number label to a new piece of backing as it was very fragile (nearly 90 years old) I wont lift my cabinet metal label to see if it has “Not Guaranteed” under it as it is held on too well.
kind regards Lindsay Shepherd |
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Hits: 562 Replies: 0
atwater: The plate and its hidden secret: NOT GUARANTEED
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Ernst Erb
30.Nov.10 |
1
A guest sent us an interesting photo.
You find a bigger picture at the photos of the set - with the courtesy remark. This compact model was most probably the most sold model 20 (compact, 7570 UV-sockets) from Atwater-Kent. The many collections we show for this model are also prooving this. But said this, we can also see that the 20 "big box" 4640 must have nearly the same sales figures, whereas the others seem to be much less sold. We list 10 different models for this "series" 20. |
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Mario Bermejo
02.Dec.10 |
2
I have the same cabinet and it has the same, "burned" type inscription. In my case the original metal label is missing so I always saw the words "NOT GUARANTEED". I don't know if the explanation is the one sent by the guest, or if its because the model was also sold as a kit. |
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Ernst Erb
03.Dec.10 |
3
Dear Mario |
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Konrad Birkner
03.Dec.10 |
4
on my 20C the plate is not fixed by screws, but with ball shaped head (fillister) nails. When trying to get the plate loose using a fine blade (knife) under the plate one of the nails jumped off and disappeared..
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Mario Bermejo
03.Dec.10 |
5
My set its just really a cabinet with a few parts and not much more, I bought it with the intention of finding an orphan chassis that I could install in it. It came with no plate but I don't remember right now if it has screw holes or not. This set is in a storage space I rent, so I wll have to go there in order to check this out. I will post here as soon as I do so. |
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Mario Bermejo
04.Dec.10 |
6
Well, here is the picture I took this morning. This cabinet was stripped sanded down by its previous owner, but we can still see the words as well as the nail marks. It is strange that the "importer tag" is still there, nailed on top of where the model one must have been in the past:
Also noteworthy is the fact that the other tags in the cabinet, the ones for speaker and batteries are still attached. The importer tag reads: DITILEVSEN & CIA LTDA
Mario |
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Hits: 768 Replies: 0
atwater: Atwater Kent 20C 7570; Compact
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Ralf Sürtenich
23.Feb.04 |
1
Anmerkungen zum Gerät: Bestückung ist 5 * 201A oder Äquivalente. Es wurden 1925 163.776 Geräte dieser Serie gebaut, 1926 noch einmal 119. Der Preis ohne Röhren betrug 1925 USA-$ 80. Keine Rückkopplung, 3 Kreis, Mittelwelle; Maße: 500 / 160 / 190 Korrektur und Ergänzung am 11.03.2004 nach Rücksprache mit Herrn Birkner (danke!): Keine Rückkopplung, 3 Kreise, Mittelwelle; Maße: 500 / 160 / 190 7570 ist die erste Compact (C) Serie des Model 20. Die technisch praktisch gleich ausgeführte 4640 Serie wurde ausschließlich im normalen Cabinet gebaut, der sogenannten "Big Box". Die 1925 gebaute Stückzahl der 7570 betrug 163.376. Die 1924 eingeführte 4640 Big Box kostete $100, das Deluxe Model 24 (Serie 4920) dagegen $120, das ebenfalls 1924 produzierte Breadboard 10C $85. Schon 1926 kostete dann die zweite 20C Serie (7960) nur noch $60. Alle diese Receiver waren technisch gleichwertig. Das zeigt auch sehr gut, wie preissensitiv der Markt damals schon war. |