[TenTec] Noisey Corsair II

[Steve]

I have been enjoying a new Corsair II and have just recently re-built the PTO and it is now smooth as silk, it even approaches my FT-1000MP VFO in terms of smoothness.

I have noticed that the Corsair II has noticeably more background noise than my Omni-D has and I began looking around for the source of it.  It appears that it is coming from the PBT board since.  When I disconnect the ouput of the PBT board which goes to the IF board it quites down very well.  Of cousre some background noise is to be expected and all of my comments relate to no antenna connected.  When I disconnect the input to the PBT board it also has a small drop in background noise, but no where near as dramatic as when I disconnect the PBT board from the IF stage.  It appears to me that the noise source is really the PBT board.

So the question is does any know of any historical problems with noisey PBT boards or what could be causing this.  As you know the PBT board has two mixers on it and I suspect one of those is the culprit since they can be noisey at times..

Steve  NU0P