The model RAZ-1 radio receiving equipment comprises the
following major units:
CRM-46092 - Radio Receiver
CRM-50092 - Pre-Selector
CRM-20096 - Rectifier Power Supply Unit
The CRM-4.6092 radio receiver and the CRM-50092 preselector
cover a continuous frequency range of 15 to 600 K.C.,
divided into four bands. Two selector switches are used on
the radio receiver and a similar switch is employed on the
pre-selector to obtain the following frequency ranges:
Range 1 - 15 to 40 K.C.
Range 2 - 40 to 100 K.C*
Range 3 - 100 to 250 K.C.
Range 4 - 250 to 600 K.C.
Ample overlap between each of the four ranges Is
A total of six vacuum tubes are used in the equipment as
CRM-46092 - Receiver
1 - 6K7 - R. F. Amplifier
1 - 6K7 - Regenerative Detector
1 - 6K7 - First Audio Amplifier
1 - 6F6 - Second Audio Amplifier
CRM-50092 — Pre-Selector 1 - 6SG7 - R. F. Amplifier
CRM-20096 - Rectifier Power Supply Unit 1 - 5W4 - Full Wave
The power drain from the 110 volt, 50/60 cycle, supply line
is approximately 40 watts. For emergency service when A.C.
is not available, the receiver and pre-selector may be used
without the rectifier unit. In such cases a 6 volt storage
Battery to deliver 2.3 amperes and a 90 volt nBw battery to
deliver 15 m.a. are required.