• TwitterFacebookGoogle PlusLinkedInRSS FeedEmail
  • Thursday, June 14, 2012

    Today's Vintage: Canadian Marconi CSR-5A

    Canadian Marconi CSR-5A Communication Receiver

    General Description

    This receiver was described by the Canadian Marconi Company as a high grade instrument especially designed to provide the maximum reliability for fixed and mobile station operation.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.

    Technical Data

    ID labelThe receiver features 2 RF stages, a crystal filter, front panel provision for crystal controlling the receive frequency, temperature and voltage stabilization, RF and AF volume controls, panel mounted noise limiter, panoramic output and exceptionally low local oscillator radiation from the antenna for use in marine service in hazardous locations.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.

    V16SK71st RF Amplifier
    V26SG72nd RF Amplifier
    V36K8Mixer Xtal Oscillator
    V46SG71st IF Amp (IF is 575 khz)
    V56SK72nd IF Amp
    V66B8Diode Detector/AF Amp
    V76H6Noise Limiter/AVC Rect
    V89002HF Oscillator
    V10V R150/30Voltage Regulator
    V116F6Audio Output

    The antenna input impedances were between 50 and 500 ohms.

    HF Radio, Ham Radio, Amateur Radio, VEC, ARRL, JARL, Yaesu, Icom, AES, Amateur Electronic Supply, GigaParts, Kenwood, DX, Yagi Antennas, Low Band DXing, Ten Tec, RF Amplifiers