KL Engels

The radio is a K.L.m. The small letter "m" means "met deurtjes" (with doors). The same radio was also available without doors: the K.L.z. (see pictures below) The K.L. was introduced together with the A.C. radio K.W.S. at the Jaarbeurs Trade Fair in Utrecht, held from February 27th until March 1st, 1928.

The first advertisement for this radio appeared in Radio Expres on March 23rd of that year. The front of the radio differs from the front that was shown in the advertisements. This may have a practical reason: Feedback is situated very close to the position of the A442 in the drawing shown in the advertisement. That may have caused some interference.

Data

Valves

Serial number:	45056
Dimensions:	24 × 54 × 30,5 cm
Made in:	1928
Purchased in:	2008

	Click on a valve for more information
	Circuit spreadsheet with switching functions
	Scan of the original user manual

Cabinet with closed doors

Top

A look inside. In the middle the A442. On the right, from top to bottom: B405, A415, A425. In the aluminium tins: primary and secondary coils. The radio uses anode detection.

Inside


Technician's initials on the bottom of the radio	Wax seal with cabinet number

Advertisement for an older version of the radio in in Radio Expres

Illustration from an Erres folder

Illustrations from the original guide