[SECC] AA4LR - QRV - Six bands

[Bill Coleman]

Greg, K4NO sent a message back in April asking what projects and  
station improvements everyone had planned for the summer.

I please to say that I've gotten most of my listed improvements done.  
Six bands from one 15m tower:

10-15-20m - A3S at 15m.

40m - A743 rotatable dipole kit on A3S. While the bandwidth is  
limited, it works much better than the 125 doublet. And a bit better  
than the half-sloper.

80m - shunt feed on 15m tower. I'm using an omega match, but almost  
need no shunt capacitance, and can't quite get down to 1:1 since the  
A743 was added. May need to experiment more here.

160m - shunt feed on 15m tower. Using an L-network to match -- it's  
two T-200-2 toroids stacked, wound with about 46 turns of wire, and  
tapped every two turns. Using about 36 turns, this is about 40uH. Cap  
is 600-750 pf using a fixed and variable cap. Matches very nicely,  
with about 35 kHz 2:1 VSWR bandwidth.

I have a relay to switch between the two matching networks. Already  
have 25 60 foot radials down, and it works well on 80m. Looking to  
add about 6 100 foot radials where I have the room to help out on 160m.

So, I'm ready for SS, and the ARRL 160m.

Built a 30m/17m trap dipole. Worked OK at 15 feet, but resonance went  
odd when I got it on the tower. May have a bad connection somewhere.  
More things to troubleshoot.

How's everyone else fairing on their projects?

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901