Jim,
There are far too many variables to answer the question. It will depend on
everything from transmitting antenna gain and direction, to TV receiver design,
to TV feedline, to how much corrosion there may be on either antenna's
feedpoint, to TV transmission field strength, to what channel is being watched
vs. HF frequency being transmitted on, to what other signals may be radiating
in the vicinity to generate intermodulation. If everything is coming together
"just right," you could interfere with a few milliwatts. If everything doesn't
match up, you could be clean with full legal power.
I assume you are wondering if you are causing interference?
73,
Bernie K5XS
-----Original Message-----
From: Jim WA9YSD <wa9ysd@yahoo.com>
Sent: Thursday, May 15, 2008 13:52
To: tentec@contesting.com
Subject: [TenTec] 95% Shield
How much power in watts or milliwatts does it take to interfere with the TV
with an outside antenna when operating HF? How much with cable TV?
Lets say that the outside antenna and cable TV is in an urban area. Neighbors
house is say 75 feet from the base of the ham tower.
Is that with in the leakage spec of say RG-213 on HF freq?
Keep The Faith, Jim K9TF/WA9YSD
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