Try tightening all the hardware on all the pcbs. Yes, I know they plug into 
plastic sockets, but there's a few soldering lugs under some of the hardware.
Direct conversion receivers generally work best if you use a resonate antenna. 
A ultra cheap roofing filter if you will. A multiband antenna can be rough when 
you're on 40 meters at night with a DC receiver
Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop
http://www.theheathkitshop.com/
J e e p
o|||||||o 
If it wasn't for great distances, we would all live a lot closer!
On Oct 7, 2010, at 11:52 AM, Matt Dillon wrote:
> Hello:
> 
>      I have an old Century 21 (analog dial) which seems to be suffering from 
> overload
> on 40 meters; some SWBC station  (apparently a domestic English language 
> religious station) is very clearly heard as you tune across the entire 40 
> meter band... with the CW and SSB signals also appearing as you happen across 
> them.  
> 
>      The rig appears to operate fine (with no SWBC blasting through) on 15 
> meters; I was astonished to work an F6 near Limoges on the first call...
> 
>      Any comments, on list or e-mail,  would certainly be appreciated.
> 
>                                                     73,
>                                                       Kevin WA4GQG
>                                                       to*r*na418@yahoo.com 
> (remove astericks!)
> 
> 
> 
> 
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