Reading about 3-wire cages and the like, I feel a serious case of shunt
envy. Mine is a single wire about 18 inches from one corner of my Rohn
25, connected to the tower at about 50 feet. I used an omega match with
a couple of 3 KV transmitting variables, because my tower is quite tall
for
How is inteference on rotor or relay boxes?I thinking 1kw generate magnetic
radiation into cables ??? How u solve this guys ?? Tnx
---Sent by iphoneLB3RE LJ3RE K3RAG ex: LA6FJAwww.lb3re.com ~ Rag ~ Stein Roar
Brobakken e-mail:post@lb3re.comhttp://la5o.wordpress.comwww.contesting.no
I place all rotor wires and other cable through a few 3 Ferrite rings
at the base of the tower with as many turns as I can squeeze on. Before
doing this I had a slight deflection in the rotor indicator at the shack
when I was on 160. Now I have none. The most sensitive item may be the
heavy
Which is the same height as the one I had in the 80's at another home. With
stacked 10-15-20 W2PV-4's it resonated somewhere around 1530 KHz if I
remember and an Omega was the only thing that worked well.
The gamma rod was 3/4 CATV hardline running thru PVC plumbing T's and pipe
then tied of
All I had on my tower were the 3 coax cables and rotator wire which were all
taped to the tower about every 5' which apparently decoupled them. The coax
also had about 15 of large 43 mix ferrite beads over them right at the
feedpoint a few years before I was on 160. That was for TVI prevention.
Pete, et al.
It really helps if you know the self-resonant frequency of the tower.
ON4UN goes into a fair amount of detail in his Low-Band DXing book. There
are examples and graphs that may or may not fit your exact configuration,
but you will get an idea of what affects tap point, bandwidth,
G’day
Nice 579 signal from W1AW/7 from AZ in the last few days, with a few of the US
callers audible as well. The topband seems to be waking up from its winter
slumber from here in the northern hemisphere direction.
Hope to get more active again around local sunset once the calendar turns over
