It was designed to provide maximum sensitivity and stability under the most severe conditions of operation, such as vibration and high humidity.
The frequency ranges covered are in 2 groups - 79 to 518 kc and 1.5 - 30 mcs.
The ranges are covered in 6 colour coded bands, the dial assembly being reminiscent of the Marconi R1155 aircraft receiver.
A choice of 2 external power supplies were available, the VP3 for 12vdc/115/230vac operation or the WE-11 for 115/230vac.
The audio output impedance was 500 ohms for line applications, 10,000 ohms for loudspeaker output as well as hi/low resistance headphone outputs.
The receiver weighs 58lbs in the rack mounted model, 68lbs when cabinet mounted.
|V1||6SK7||1st RF Amplifier|
|V2||6SG7||2nd RF Amplifier|
|V3||6K8||Mixer Xtal Oscillator|
|V4||6SG7||1st IF Amp (IF is 575 khz)|
|V5||6SK7||2nd IF Amp|
|V6||6B8||Diode Detector/AF Amp|
|V7||6H6||Noise Limiter/AVC Rect|
|V10||V R150/30||Voltage Regulator|
The antenna input impedances were between 50 and 500 ohms.
© Ian O'Toole, 2009. Page created: 14/04/04 Last updated: 4/12/2009