[RFI] TVI

[Bill Coleman]

On Jun 8, 2004, at 7:52 AM, Sean Fleming wrote:

> The tv is a emerson that is about 10 yerars old. When transmitting on 
> 40M using a g5rv The brightness on the tv on all channels without 
> cable feed to the tv the picture dims and brightens on transmit.  This 
> is sort of the same affect when sometimes  you see a change in the 
> lights when operating CW in my house where the lighting dims some. The 
> antennas I have is a tri-band Beam far fromt he house has no effect. I 
> have an a-99 vertical that has no effect on 10-15 Meters, but the g5rv 
> that isabove the second story of my home causes all the trouble. this 
> is only on 40M.

Sounds like a fundamental overload. These can be very difficult 
problems to solve. Since there are no cables (other than AC power) to 
conduct RF into the TV, it may be coming through the case. One solution 
may be to move the G5RV antenna leg further away from your house. You 
might try winding several turns of the AC power cord through a snap-on 
type ferrite toroid first. If that doesn't help, try moving the 
antenna, or move the TV to a different room, further away from the 
antenna.

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