[Boatanchors] SX-25 Update

[Al Klase]

On 6/26/2011 9:53 AM, Joe Connor wrote
> 2.  On Band 3 (5.0 to 15.7 mhz), the band seems more sensitive above about 8 mhz than below it. I did a quick RF alignment, which helped a bit. Most of my SWLing is below 12 mhz. The manual susggests doing the alignment at 14 mhz. Would doing it at 12 mhz help sensitivity lower on the band?
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Make sure the RF trimmers are peaked on the desired 14 Mhz signal and 
not the image.  On the higher bands it's easy to get the low end of the 
band "padded" properly and the high end "trimmed" to the image.  Then 
things go to pot in the middle of the band.

Assuming the oscillator is on the high side of the signal this will be 
the lower of the two responses, i.e. the one with the trimmers screwed 
farther in.  (Puzzling this out always challenges my feeble brain.)

Does anyone know for sure whether the SX-25 is high-side injection on 
all bands?

Al

-- 
Al Klase - N3FRQ
Jersey City, NJ
http://www.skywaves.ar88.net/