Here's another variation on the equipment used by some of the most prolific RBN nodes, from Drew, K3PA:
"As the tradeoff between low band
overload and high band sensitivity is so often noted, here is the
approach I took. I wanted to spot 10 bands (incl 6M), and so needed
two QS1R units in any case. I use a 18 foot vertical with a unity gain
buffer (a YCCC RX circle amp) for 160 through 15m on the -1 node. It
has reduced sensitivity on 15M and up, due to the antenna design AND the
buffer, AND the QS1R.
So, to spot 15/12/10/6, I have a
separate antenna, an omni horizontal, basically a clone of a
multiband "spider", which we used to call a "squalo" on 6M. That
antenna has a low noise figure, high intercept 16 dB gain preamp
on it. (Homebrew MOSFET type) It generally hears better than the
vertical on those bands. I let both skim 15M with separate IDs as
either can be better on 15.
As a benefit, I believe I have
the only 6M node in the central US area. I'd like to get it a little
higher and away from household spurs but it does OK.
Jeff, AC0C is in my immediate
geographical area also, and he has a more complicated setup leveraging
his main TX antennas as well as an 8 circle and a vertical. He also
skims RTTY. But no 6 meters there. His node hears
extraordinarily well on 160. (Ask the east coast guys.) Similar
to me on other CW bands."
I hope you're finding this series interesting and perhaps even inspiring. Europe's next.
73, Pete N4ZR