[SEDXC] is list very quiet or am I no longer subscribed?

[Frank T Brady]

Ok - I'm still subscribed (I confused the two reflectors), but I'm going 
to try SEDXC first anyway - so here goes.

I've recently moved from an apt to a house on a lot with (many) tall 
trees so I could have an outdoor antenna.

I chose a 135 ft doublet fed with 600 ohm open line to eliminate the 
weather variations I had with a doublet I fed with window line.  I also 
wanted to try my variable feedline length relay system originally built 
for my old window line fed doublet in order to select the optimum 
feedline length for each of the 80 thru 10 bands.  My hope was that 
narrowing down the width of my 600 ohm line as it passes through the 
relays would be such a short distance, relatively speaking, that it 
wouldn't cause any serious problems.  I also had to 'droop' 20' of wire 
at each end of the 135' flattop due to space limitations (80m is very 
important to me as I only need 11 countries to get 8bdxcc).

The system (sorta) works - the relay system and control software finds 
and switches in the correct feedline segment lengths to get good swr on 
all bands.  *However* - I noticed wierd stray RF problems on some bands 
and when I took a field strength meter out to the antenna area, I found 
that the meter pegs when I get it within a few feet of the feedline.  I 
also peg the meter when I put it near my TV cable on the outside of the 
house - which is within a few feet of my feedline for a short distance.  
I don't know whether or not such a measurement meaningfully indicates 
unwanted feedline radiation but it sure doesn't seem right, and I do 
have lots of RF everywhere.

Well hopefully that description is an adequate starting point for 
discussion if anyone would care to comment.  If this list is 
inappropriate, I understand and will post it on the Antenna reflector.

Tx and 73
Frank w0ecs




On 11/6/2014 5:42 PM, Frank T Brady wrote:
> Hi
> I'm having trouble with a new antenna I've installed at my new qth.
> I wanted to discuss it here, but the most current date in my saved 
> email for this group is last march.
> Am I still subscribed?
> frank w0ecs
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