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Super Defiant SX-25

Super Defiant SX-25; Hallicrafters, The; (ID = 59309) Amateur-R
 
Super Defiant SX-25; Hallicrafters, The; (ID = 59310) Amateur-R
Super Defiant SX-25; Hallicrafters, The; (ID = 2242545) Amateur-R Super Defiant SX-25; Hallicrafters, The; (ID = 2242546) Amateur-R
Super Defiant SX-25; Hallicrafters, The; (ID = 2242547) Amateur-R Super Defiant SX-25; Hallicrafters, The; (ID = 2242549) Amateur-R
Super Defiant SX-25; Hallicrafters, The; (ID = 2242548) Amateur-R Super Defiant SX-25; Hallicrafters, The; (ID = 2242552) Amateur-R
Super Defiant SX-25; Hallicrafters, The; (ID = 2242551) Amateur-R Super Defiant SX-25; Hallicrafters, The; (ID = 2242550) Amateur-R
Super Defiant SX-25; Hallicrafters, The; (ID = 261062) Amateur-R Super Defiant SX-25; Hallicrafters, The; (ID = 261063) Amateur-R
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Super Defiant SX-25; Hallicrafters, The; (ID = 2242545) Amateur-R
Hallicrafters, The;: Super Defiant SX-25 [Amateur-R] ID = 2242545 1400x759
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For model Super Defiant SX-25, Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX
 
Country:  United States of America (USA)
Manufacturer / Brand:  Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX
Year: 1940–1946 Category: Amateur-Receiver (amateur bands, may include broadcast bands)
Valves / Tubes 12: 6SK7 6SK7 6K8 6SK7 6SK7 6SQ7 6SQ7 6H6 6J5 6F6 6F6 80
Main principle Superhet with RF-stage; ZF/IF 455 kHz
Tuned circuits 10 AM circuit(s)
Wave bands Broadcast, Short Wave(s) and Police.
Details
Power type and voltage Line / Storage batteries (perhaps also batteries) / 100-125 / 6 Volt
Loudspeaker - This model requires external speaker(s).
Power out 8 W (unknown quality)
from Radiomuseum.org Model: Super Defiant SX-25 - Hallicrafters, The; Chicago,
Material Metal case
Shape Boatanchor (heavy military or commercial set).
Dimensions (WHD) 495 x 241 x 283 mm / 19.5 x 9.5 x 11.1 inch
Notes Coverage: 0.540-1.7, 1.7-5.1, 5.0-15.7, 15.2-42MHz, XTal-IF-Filter , DC Operation also by a 6Volt Storage Battery and "B" Batteries or Vibrapack
Net weight (2.2 lb = 1 kg) 21 kg / 46 lb 4.1 oz (46.256 lb)
Price in first year of sale 99.00 $
Collectors' prices  
External source of data E. Erb 3-907007-36-0
Source of data Communications Receivers
Circuit diagram reference Rider's Perpetual, Volume 11 = ca. 1940 and before


All listed radios etc. from Hallicrafters, The; Chicago, IL and Arlington/Grand Prairie, TX
Here you find 819 models, 435 with images and 388 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.



 


Forum contributions about this model
Hallicrafters, The;: Super Defiant SX-25
Threads: 1 | Posts: 4
Hits: 502     Replies: 3
hallicraft: Trasformatore 220 V.
Gabriele Seccia
07.Dec.17
  1

Buonasera vorrei trasformare l'alimentazione del mio SX 25 da 110 V. a 220 V.

Visto l'uso del numero di valvole sto cercando di capire se il trasformatore da me trovato su Ebay possa andar bene , presenta un secondario da 280 V. + 280 V. 75 Va - 5V. 2 Ah e 6,3 V. 2,2 Ah .

Puo essere sufficiente ?

Saluti Gabriele

Biagio Laureti
11.Dec.17
  2

Ciao Gabriele, in merito al tuo trasformatore considera quanto segue:
per la valvola tipo 80, l'assorbimento filamento è 5V 2A ed il trasformatore è adeguato;
per 11 valvole 6,3 V 0,3 A e 1 o 2 lampadine per la scala parlante 6,3 V 0,3 A sono necessari 6,3 V 3,9 A (13x0,3) meglio ancora sarebbe un amperaggio maggiore ad esempio 4,5/5 A, e il tuo trasformatore 6,3 V 2,2 A non è sufficente.
Se lo intalli sicuramento si brucia il secondario per eccesso di temperatura.
Io per il riavvolgimento di alcuni trasformatori mi sono avvalso di un tecnico riparatore/collezionista di Roma (zeppieri.fabio[A*T]libero.it), del quale sono rimasto soddisfatto sia per il tempo che per la qualità del lavoro e non ultimo per il costo.

Saluti Biagio

Gabriele Seccia
11.Dec.17
  3

Grazie Biagio , lo contattero' cosi vedo se sia possibile far modificare il suo trasformatore originale e portarlo ad un primario da 220V.

Buone feste

Gabriele

Martin Bösch
18.Dec.17
  4

Ciao Gabriele, I answer in english as my italian is quite poor.

Instead of changing the original transformer in your set, which is quite antique and would not be considered anymore as original after the modification of the power supply, you might consider usind a transformer from 220 to 110 Volts. I have one with the original US socket, so I can use it for several U.S. sets.

Another option would be to use a variable transformer and just adjust to the output voltage which is needed to power up your SX25, that's what I usually do.

Here in Switzerland, we have some old U.S. sets, part of them come with an original multi voltage transformer (suffix U for universal transformer in Hallicrafters model number), some of them are changed to 220 V by an earlier owner and some still are for 110 V.

This can be a problem if someone buys a set, changes to plug to one matching the 230V mains socket and booom, he will ruin the set when switching it on the first time. So the idea to leave it original and use a transformer from 230 to 110 V is my favourite,

kind regards, saluti della Svizzera
Martin

 
Hallicrafters, The;: Super Defiant SX-25
End of forum contributions about this model

  
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