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In the Forum: Off Air Audio
In the Thread: Tuners and digital noise from DAW, A/D and D/A
Post Subject: The radioactive Larvy and the fragile FMPosted by Romy the Cat on: 7/21/2008

Peter, I do not know what is doing in with AM, I do not use it and all my experiments are in FM range. You might do the following: take FM antenna out of tuner and use instead a few cm of local wire. Defeat the noise causation on Sansui and run the tuner from I would say 95.0 to 101.0Meg. You will have a few stations and a lot of nasty air-noise that will be more or less homogenous. Then turn the Larvy 924 on and run the tuner across the range again. You will see some heavy MF signals and regions of complete exclusion of air-noise (that is interference too). Turning Lavry on and off will show up very indicative how much Lavry tosses out noise. Wight down the regions of max MF signal the come from Lavry. Put antenna back, turn Lavry off and tune to a station in the written regions. Attenuate the signal for Sansui for a given station. Listen the background noise – you shell have no hiss of any kind. Then tune the Larvy on. Listen the HF hiss that will be coming…

Sure the result might wary upon many conditions. In my case Larvy 924 and FM reception are not compatible. It does not bother me BTW too much as there is no need to run Lavry DA while I do recording. However, I need to run my A/D machines… That is why I put a lot of ferret in my Sansui… In fact I am contemplation to disengage the Pacific D/A section and use it only as A/D processor… Pacific is WAY quieter from tuner interference then Larvy 924 of 122. Perhaps if I turn all my recording to Rohde & Schwarz (that made at very different pro standards and actually was designed to work in very heavy noisy environment) then it would be less hassles but at this point I am hesitant to give the duty to the Schwarz as it is not ready yet to perform at its full bloom.

The Cat

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