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7570 Model 20C, 20 Compact UV-sockets

7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 44444) Radio
 
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 135506) Radio
 
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 135507) Radio
 
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 276443) Radio
 
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 699908) Radio
 
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 699909) Radio
 
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 1625950) Radio
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 2261935) Radio 7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 2261936) Radio
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 2261937) Radio 7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 2261938) Radio
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 2261939) Radio 7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 44060) Radio
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 1787073) Radio 7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 50971) Radio
7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 44438) Radio 7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 97377) Radio
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7570 Model 20C, 20 Compact; Atwater Kent Mfg. Co (ID = 2261935) Radio
Atwater Kent Mfg. Co: 7570 Model 20C, 20 Compact [Radio] ID = 2261935 1400x786
Select picture or schematic to display from thumbnails on the right and click for download.
For model 7570 Model 20C, 20 Compact UV-sockets, Atwater Kent Mfg. Co.; Philadelphia, USA
 
Country:  United States of America (USA)
Manufacturer / Brand:  Atwater Kent Mfg. Co.; Philadelphia, USA
Year: 1925 Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 5: UV201A UV201A UV201A or UV200 UV201A UV201A
Main principle TRF without regeneration
Tuned circuits 3 AM circuit(s)
Wave bands Broadcast only (MW).
Details
Power type and voltage Storage and/or dry batteries
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 80.00 $
Collectors' prices  
External source of data Ernst Erb
Source of data Radio Manufacturers of the 1920s, Vol 1
Circuit diagram reference Rider's Perpetual, Volume 1 = 1931/1934 (for 1919-1931)
Mentioned in Collector's Guide to Antique Radios 4. Edition
Literature/Schematics (1) A.Atwater Kent, The Man, 2002


All listed radios etc. from Atwater Kent Mfg. Co.; Philadelphia, USA
Here you find 502 models, 317 with images and 325 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




 


Forum contributions about this model
Atwater Kent Mfg. Co: 7570 Model 20C, 20 Compact
Threads: 3 | Posts: 8
Hits: 1509     Replies: 0
atwater: (Model 20C, 20 Compact); 7570
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

Attachments

 
Hits: 2260     Replies: 5
atwater: The plate and its hidden secret: NOT GUARANTEED
Ernst Erb
30.Nov.10
  1

A guest sent us an interesting photo.
He unscrewed the plate of this model 20 and was astonished to find this clear stamp that this set is "NOT GUARANTEED".

His own text is:

We received this by courtesy of guest Tom Hart, Dedham, MA, USA.
I have been refinishing an Atwater Kent Model 20 TRF receiver. The original finish was gone and needed complete replacement. When I removed the metal label from inside of the top lid, I found an interesting notice.

The photo shows the text. Apparently, this was burned into the wood under serial number name plate (which is shown in the photo). Atwater Kent probably did this to refuse service for a radio without the serial number information, I suspect.



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.

I hope that not everybody will now unscrew the plate - but still, it would be of interest to know in which circumstances we find that "warning" and in which not.

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.

Mario
 

Ernst Erb
03.Dec.10
  3

Dear Mario
Do you find screw holes at your set for a plate which look old or it it plain or with new holes?

I just discussed this with Konrad Brikner who has such a set. He finds the same print when removing the plate.

We therefore wonder if "NOT GUARANTEED" had to be stamped already by the set maker, enabling Atwater Kent to control that only at the end test somebody was able to put on the plate.

Konrad Birkner † 12.08.2014
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..
But I can read NOT GUARANTEED.(I hope it is not true for my nail's recovery...).

 

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.

Mario

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:

UNICOS IMPORTADORES

DITILEVSEN & CIA LTDA
COCHABAMBA 54 BS.AIRES

 

Mario

 
Hits: 2014     Replies: 0
atwater: Atwater Kent 20C 7570; Compact
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.
 
Atwater Kent Mfg. Co: 7570 Model 20C, 20 Compact
End of forum contributions about this model

  
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