[VHFcontesting] rf problem

Ray J Ray at w9ray.org
Fri Dec 12 23:15:26 EST 2008

thats a surprise? there is probably several watts of 50mhz coming back 
down your coax to your 2 meter setup.

hard to believe its getting through the dci filter that good though.. is 
that the big (12" or so long?) silver cavity filter. 144-146mhz)

do you have the filter inline  between the amp and antenna or between
the radio and amp? does the amplifier have a preamp?

Christopher S Peightal wrote:
> I am having alittle problem.  I have one tower that has my 6 meter yagi on it. 

  It is a M2 6M7JHV and I have another tower about 35-40 feet away from 

with my 2-1296Mhz antennas on that.  The problem is when I have the 6 meter
r antenna pointing towards the other tower running about 400 watts and with

the 2 meter radio and amp on some RF is coming down the 2 meter coax and of

  course triggering the 2 meter amp.  The 2 meter antenna is a few feet

higher than the 6 meter antenna.  My question is what filters if any do

  you guys recommend to surpress this problem.  The only filter I have in

line right now for 2 meters is a DCI filter but that is for intermod 

  Hope I was clear enough to understand.  thanks, chris, ka3zls.
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