The RBJ was designed for use at shore stations or aboard naval vessels. The sets were supplied in mounting racks suitable for table mounting.
The RBJ is a nine valve superheterodyne using 9 plug in coil sets to cover the range from 50 - 400 kc and from 480 to 30,000 kc. See below for the range of each box. The receiver is powered by a separate power unit.
Audio output is either through headphones - 10mw at 600 ohms - or via a loudspeaker output circuit providing 2 watts at 5000 ohms.
Restorers please note that an audio output transformer will need to be provided to match 5000 ohms to loudspeaker impedance.
The antenna feed can be configured for either single wire or balanced feed.
Power Requirements: The RBJ, RBJ-3 and RBJ-4 were supplied with a 230 vac power supply CNA-20125, while the RBJ-1 and RBJ-2 were supplied with 117 vac supply type CNA-20090. Both supplies were rated at 50/60 cps single phase.
The HT voltage required is 240v at 70 ma whilst the LT is 6.3v at 3.4A.
|The valve complement is:|
|V101 6D6 1st RF Amplifier||V104 6C6 HF Oscillator||V107 6F8 2nd Detector/AVC|
|V102 6D6 2nd RF Amplifier||V105 6D6 1st IF amplifier||V108 6C6 CW Oscillator|
|V103 6C6 First Detector||V106 6D6 2nd IF amplifier||V109 6V6 Audio Amplifier|
The all up weight of the unit complete with mounting rack, power supply and coil drawer is 145 lbs. (appx 66kg)
© Ian O'Toole, 2009. Page created: 22/11/04 Last updated: 4/12/2009