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Weekend 57U (Lo) 9414

Weekend 57U 9414; Schaub und Schaub- (ID = 2120807) Radio
 
Weekend 57U 9414; Schaub und Schaub- (ID = 2120808) Radio
Weekend 57U 9414; Schaub und Schaub- (ID = 388335) Radio Weekend 57U 9414; Schaub und Schaub- (ID = 388339) Radio
Weekend 57U 9414; Schaub und Schaub- (ID = 388341) Radio Weekend 57U 9414; Schaub und Schaub- (ID = 388337) Radio
Weekend 57U 9414; Schaub und Schaub- (ID = 388340) Radio Weekend 57U 9414; Schaub und Schaub- (ID = 126259) Radio
Weekend 57U 9414; Schaub und Schaub- (ID = 1266939) Radio Weekend 57U 9414; Schaub und Schaub- (ID = 1266940) Radio
Weekend 57U 9414; Schaub und Schaub- (ID = 1266941) Radio Weekend 57U 9414; Schaub und Schaub- (ID = 1266942) Radio
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Weekend 57U 9414; Schaub und Schaub- (ID = 388335) Radio
Schaub und Schaub-: Weekend 57U 9414 [Radio] ID = 388335 540x604
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For model Weekend 57U (Lo) 9414, Schaub und Schaub-Lorenz
 
Country:  Germany
Manufacturer / Brand:  Schaub und Schaub-Lorenz
Year: 1957/1958 perfect model Category: Broadcast Receiver - or past WW2 Tuner
Valves / Tubes 6: DF97 DK96 DF96 DF96 DAF96 DL96
Main principle Superhet, double/triple conversion; ZF/IF 460/10700/6700 kHz
Tuned circuits 7 AM circuit(s)     10 FM circuit(s)
Wave bands Broadcast, Long Wave, Short Wave plus FM or UHF.
Details
Power type and voltage Line / Batteries (any type) / 110; 127; 155; 220 DEAC D2 & 90 Volt
Loudspeaker Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12 cm = 4.7 inch
Power out 0.15 W (unknown quality)
from Radiomuseum.org Model: Weekend 57U 9414 - Schaub und Schaub-Lorenz
Material Leather / canvas / plastic - over other material
Shape Portable set > 8 inch (also usable without mains)
Dimensions (WHD) 292 x 210 x 118 mm / 11.5 x 8.3 x 4.6 inch
Notes

Im UKW-Bereich arbeitet Weekend 57U als Doppelsuper.

Siehe auch Weekend 57U 9014.
Die Herkunft der Bezeichnung "Lo" ist unbekannt.

Net weight (2.2 lb = 1 kg) 4.4 kg / 9 lb 11.1 oz (9.692 lb)
Price in first year of sale 265.00 DM
Collectors' prices  
Source of data HdB d.Rdf-& Ferns-GrH 1957/58 / Radiokatalog Band 1, Ernst Erb
Mentioned in -- Original-techn. papers.


All listed radios etc. from Schaub und Schaub-Lorenz
Here you find 916 models, 774 with images and 632 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
Schaub und Schaub-: Weekend 57U 9414
Threads: 1 | Posts: 1
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schaub: Weekend 57U 'Dual Conversion'
Michael Watterson
14.Jul.13
  1

Technically yes, this radio has dual conversion. But Dual Conversion is usually on Short Wave (HF) to get IF good image rejection (High 1st IF) and narrow bandwidth (low 2nd IF).

In this case the 2nd conversion is so as to get some gain advantage from the DK96 Heptode Mixer/Osc usually disabled on AM/FM battery sets on FM, though technically it's possible to use it as an amplfier rather than Oscillator (on g2 as an "anode") and Mixer.

On LW, MW & SW the circuit is like any other AM set, but with 2 x IF Amps (which is the case on the Vidor Vanguard AM/FM valve (tube) Portable and some more deluxe AM models too), but the first DF96 stage is only single tuned. On VHF-FM the DF97 stage is also like any other Triodised Additive Mixer/Osc with 10.7MHz. The DK96 is then running with a fixed L.O. to convert the 10.7MHz to 6.7MHz. On VHF the first 460kHz tuned stage on the DK96 anode is "shorted out".

Design of true Dual Conversion Shortwave set though is possible with this valve line up. In this case one of the DF96 would be before the DK96 and on LW & MW only one IF amp, but the DF96 could be an RD preamp. The DF97 would be a LO only on SW and the DF96 a Mixer / 1st IF amp as on the Vidor Vanguard which uses only DF97 for ALL the AM & FM RF, Mixer and IF functions. On SW the DK96 would be 2nd conversion from 10.7MHz to 460KHz. In this hypothetical re-design the DK96 could be used as it is currently, but the 1st DF96 moved to before the DK96 might be better as a DF97, though the DF96 does work.

 
Schaub und Schaub-: Weekend 57U 9414
End of forum contributions about this model

  
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