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Antique Radio Technical Forum
1088 FM problem

Posted by Bubba on 04/20/2009 10:44

Sorry it's a grundig 1088

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: And would that 1088 be the Model, and would that then be a ?
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:GRUNDIG 1088
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:HALLICRAFTERS 1088
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:TELEDYNE 1088
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:EMERSON 1088
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:TRUETONE 2D 1088 A
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:WARDS GSE 1088 A
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:RCA RC 1088
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:REALTONE TR 1088
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:CONTINENTAL MDSE. CO. TFM 1088
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:Relevant to the "image"":
:The most common FM IF is 10.7 megglinghertz, so would that be in agreement with, say , finding a station at mid band and finding it replicated at either +10.7 or -10.7 Mhz , which you could possibly only BARELY do once at the center of the band , what with the FM band only being < 20 Mhz wide.
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:I might suspicion an extra " mixer" problem in the RF front end, in the respect of a poor connection / galvanic corrosion acting as a "semiconductor" and throwing some spurious signals in CONSIDERING there is a strong local signal nearby to you that could be providing the strong RF for that additional mixing action
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:AM stations, could also included, for that source of their continuous sourced RF.
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:Next thought, deterioration of bypass / decoupling caps in the RF- IF sections upsetting the RF with the possibility of spurious oscillations occurring.
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:Mis-alignmentt of the IF-RF stages ?.
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:Which is the sets brand ?
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:73's de Edd

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1088 FM problem 
Bubba 03/28/2009 12:17 
Lewis L 03/28/2009 15:07 
Edd 03/28/2009 21:44 
Bubba 04/20/2009 10:44 
Edd 04/20/2009 18:23 
Edd 04/20/2009 18:23 

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