In the end it was, as it most often is the case, the simplest thing. When faced with an SMD cemetary one hesitates to de-solder more ICs than absolutely necessary … which leads to a prolonged phase of thinking things over. The apparent culprits could well be the 4053 switching circuits and/or Q83, a 4094 controling the swichting ICs. Measuring the usual suspects gets you nowhere – everything seems to be ok until you reach the 2nd mixer, but the IF amp has no input signal.
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My AR7030 surprised me with a strange malfunction: from time to time, a strange peeping noise, the panel goes blank, the receiver stops working …Ĭhecking the reason for the apparent short-circuit leads to the ‚+10db‘ position of the RF-IF button and the reason seems obvious, Q16.ĭe-soldering the transistor solves the short-circuit problem, but following this operation the receiver delivers static only on any AM signal but normal reception on the sidebands, FM and CW. In French: TSF for Télégraphie sans fil.Īll listed radios etc. Here you find 3 models, 3 with images and 1 with schematics for wireless sets etc. See "Data change" for further contributors. Model page created by Wayne Childress.Shortwave Receivers - Past & Present (4th ed.) (page 71).It receives in AM, LSB, USB, CW, FM and FSK modes. The AOR AR7030 is a general coverage communications receiver, covering 0-32 MHz. Model: Communications Receiver AR7030 - AOR Manufacturing Ltd.Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil).
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Powered by external power supply or a main unit.Superhet, double/triple conversion ZF/IF 45000/455 kHz.