[1000mp] Improving IM3 DR with Mark V and Inrad Roofing Filter

[Mike Schatzberg]

Hello 1000MP Fans:

I came across an interesting posting on the Contest Group of Quebec website.
The posting is from November 26, 2007, from Gilles, VE2TZT.

Although written in French, it appears that Gilles had quite a problem
during CW contesting with the new Inrad Roofing Filter installed in his Mark
V.
You can see his posting here:

http://contestgroupduquebec.com/index.php?option=com_simpleboard&Itemid=41&func=view&id=528&catid=2

So basically he says that he didn't see any improvement advantage after
installing the Inrad filter, and he even experienced a degradation of the
resistance to intermodulation products on 40 meters where he has a
particularly good antenna.

His article concludes that performing the simple modification to the Inrad
Roofing Filter board as suggested on the VA3CR website, fixed the problem,
and he has now no issues while contesting.

73 and Happy DXing,

Mike
W2AJI