At 11:14 AM 5/30/2006 -0700, Robert Hess wrote:
I have a 2.4Ghz dish on my tower at the 30ft level. It's one of the
BBQ-like grill dishes, as my ISP tower is about 20 miles away and I need
all the gain I can get. I have unshielded CAP-5 wire running from the
tower to the house, approximately 125ft away, to my router
I have never experienced any interference from the ISP setup to any ham
frequencies that I operate (HF, 6M & 2M) BUT I occasionally interfere with
the ISP dish.
I have a 5el 20M monobander at the 96ft level of the same tower, complete
with balun, and even running 2kw, I never interfere with the ISP but if I
go over to 160, 80 or 40 meters and use my inverted-vee suspended at the
86ft level from the same tower with NO balun, I shut down the ISP receiver
and I need to power it down and right back up to continue getting a
signal. Same with 6M antenna at 105ft level.....I interfere with the ISP
when I kick on the 1200 watt amp but I don't shut it down just running 100
watts (normally.) No balun on this beam either.
The coax cables all run right by the ISP receiver/dish, so I am thinking
that I have RF on the shields of the coax without the baluns. Everything
is grounded so the next thing I plan to try is adding a balun on the
dipole, as that is the most accessible. And/or some ferrites someplace
or???? (Ideas???)
Chuck KØTVD - Mo Valley, IA
>Anyone out there have a wireless ISP operating from
>your tower? If so, any interference to your equipment
>from the ISP or from the ISP to your equipment? 900
>MHz, 2.4 or 5.8GHz? Do you run legal limit? HF or
>VHF operating on the tower with the ISP?
>Bob
>W1RH
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