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7T10 (-N) Ch= 5K1 (UL5K1) Octal and Loctal

7T10 Ch= 5K1 ; Admiral brand (ID = 85794) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 372097) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 372098) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 372099) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 372100) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 915829) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 915830) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 915831) Radio
 
7T10 Ch= 5K1 ; Admiral brand (ID = 915832) Radio
7T10 Ch= 5K1 ; Admiral brand (ID = 1874122) Radio 7T10 Ch= 5K1 ; Admiral brand (ID = 93865) Radio
7T10 Ch= 5K1 ; Admiral brand (ID = 93867) Radio 7T10 Ch= 5K1 ; Admiral brand (ID = 93868) Radio
7T10 Ch= 5K1 ; Admiral brand (ID = 275573) Radio 7T10 Ch= 5K1 ; Admiral brand (ID = 275574) Radio
7T10 Ch= 5K1 ; Admiral brand (ID = 915828) Radio 7T10 Ch= 5K1 ; Admiral brand (ID = 1209879) Radio
7T10 Ch= 5K1 ; Admiral brand (ID = 464865) Radio 7T10 Ch= 5K1 ; Admiral brand (ID = 464866) Radio
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7T10 Ch= 5K1 ; Admiral brand (ID = 1874122) Radio
Admiral brand: 7T10 Ch= 5K1 [Radio] ID = 1874122 800x635
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Für Modell 7T10 (-N) Ch= 5K1 (UL5K1) Octal and Loctal, Admiral (brand) Continental Radio & Television Co.; Chicago, IL:
American Radio Design Greg Mercurio
 
Land:  USA
Hersteller / Marke:  Admiral (brand) Continental Radio & Television Co.; Chicago, IL
anderer Name
 
Continental Radio & TV
Jahr: 1947/1948 Kategorie: Rundfunkempfänger (Radio - oder Tuner nach WW2)
Röhren 5: 12SA7 12SK7 14B6 50A5 35Y4
Hauptprinzip Superhet allgemein; ZF/IF 455 kHz
Anzahl Kreise 6 Kreis(e) AM
Wellenbereiche Mittelwelle, keine anderen.
Spezialitäten
Betriebsart / Volt Allstromgerät / 117 Volt
Lautsprecher Dynamischer LS, keine Erregerspule (permanentdynamisch) / Ø 5 inch = 12.7 cm
Belastbarkeit/Leistung
von Radiomuseum.org Modell: 7T10 Ch= 5K1 [Octal and Loctal] - Admiral brand Continental
Material Bakelit (Pressstoff)
Form Tischgerät, bis 35 cm Breite (Kleingerät, meist dekorativ. Nur für Netzbetrieb, doch Transportgriff möglich).
Abmessungen (BHT) 13 x 8 x 7 inch / 330 x 203 x 178 mm
Bemerkung

Built-in loop antenna. There is also a variant which employs Octall tubes only.

Colors:

  • 7T10E = ebony / black
  • 7T10M = mahogany
  • 7T10C = ivory
  • ebony w/ ivory louver (mentioned in Rider's 17)
  • ivory w/ ebony louver (mentioned in Rider's 17)

The difference between models with and without -N suffix is currently unknown.

Nettogewicht 6 lb 8 oz (6.5 lb) / 2.951 kg
Originalpreis 19.95 $
Sammlerpreise  
Datenherkunft extern Ernst Erb
Datenherkunft Collector's Guide to Antique Radios 4. Edition
Schaltungsnachweis Rider's Perpetual, Volume 17 = 1948 and before
Literaturnachweis The Radio Collector's Directory and Price Guide 1921 - 1965
Literatur/Schema (2) Radio Retailing (Radio & Television R.) (Jun 1947 p.20 and Sep 1947 p.19)
Literatur/Schema (3) Rider's Perpetual, Volume 22 = covering 1951
Literatur/Schema (4) Photofact Folder, Howard W. SAMS (Set 30, Date 12/47, Folder 4720-1)


Alle gelisteten Radios usw. von Admiral (brand) Continental Radio & Television Co.; Chicago, IL
Hier finden Sie 2804 Modelle, davon 1159 mit Bildern und 2146 mit Schaltbildern.



 


Forumsbeiträge zum Modell
Admiral brand: 7T10 Ch= 5K1
Threads: 1 | Posts: 2
Klicks: 1348     Antworten: 1
admiral: Ch= 5K1; 7T10
Tim Dees
07.Mar.12
  1

This is my first post, and I'm a beginner.  I got this radio out of a barn loft and I'm guessing it hasn't been used in 30 to 40 years.  I opened it up and saw that the speaker cone had been eaten out and a blown capacitor was hanging loose.  I decided to restore this radio.  I replaced all of the paper capacitors with new modern capacitors.  I found a used speaker on ebay which was the same model.  I just got finished with it and turned it on and to my joy it warmed up quickly and I started receiveing stations right away.  My question is, is it normal in an old am radio to get signal bleeds of other stations trying to come in on the same frequency?  I live about 35 miles from a big city and get some of the stations very strong, but with other stations being lightly heard trying to come in on that frequency also.  I've picked up stations in other states also, with the same problem.  I have not done anything else to the radio other than clean the tuner with contact cleaner.  It was dirty and a little corroded.  When I rotate the dial, it moves freely after using the contact cleaner.  The sound is great and nice volume without distortion.

Thomas Albrecht
10.Mar.12
  2

Tim,

Welcome to the hobby of antique radio restoration!  Your radio is a perfect example of an "All American Five" - a very common radio design used from about 1946 through the end of the tube era in the 1960s.  They had five tubes in a series filament string and no power transformer.

It is not really normal for the radio to have poor selectivity.  Basically this radio should function as well as any modern radio as far as separating stations is concerned.  It's not immediately obvious what the problem is.

As you tune the dial, is the tuning for each station quite sharp, as it should be?  That is, does the station only come in at a very specific position on the dial, in a very narrow range?  If the tuning of stations is pretty broad, the IF transformers might not be very well aligned.  To fix this (in a crude fashion, but it works OK for a radio like this), tune in a very weak station, and then adjust the two trimmer capacitors on top of each of the IF transformers for maximum signal strength.  Each adjustment screw should have a very definite peak.  If you find that any of these screws does not have a definite peak in signal strength, there may be a problem with that IF transformer.

Another possibility is that the loop antenna is not connected properly.  One way to tell is whether the "RF" or "antenna" trimmer on the main tuning capacitor shows a definite peak when tuning a weak station near the upper end of the dial.  On the side of the tuning capacitor, you will find two adjustment screws, each of which compresses a mica trimmer capacitor.  The one adjacent to the larger set of plates on the tuning capacitor is the "antenna" trimmer.  See if you get a peak (perhaps not particularly sharp, but still a peak) when adjusting this on a weak station near the high frequency end of the dial.  If this trimmer has no effect, there may be a problem with the loop antenna.

Do stations come in at the proper frequency position on the dial?

Best regards,

Tom

 
Admiral brand: 7T10 Ch= 5K1
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