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![]() "Roger" wrote in message news:11291508.1749.1335373308176.JavaMail.geo-discussion-forums@pbbpz9... On Tuesday, April 24, 2012 9:11:06 PM UTC-7, Irv Finkleman wrote: Thusly, my goal is to provide myself with a first rate RF ground system, entirely contained within my suite, in order that I do not wake up at night with the fire alarms set off and great numbers of disturbed residents gathered around pointing at me and saying 'Ham! Ham! For Shame! For Shame!' and the Residents Council having special meetings to decide how to deal with me. They already think I'm crazy -- and I may be somewhat, but I don't want to make matters worse! So, having herein explained my rational, lets see what help I can get in the way of producing the ideal indoor low-cost non-radiating counterpoise radial system. Actually, I have lots of wire for the radials, the tuner contains a loading coil to assist in tuning the counterpoise, and my big concern is how do I determine when the counterpoise is operating effectively. The metering system in the tuner should reach a peak and subside on either side of the correct counterpoise tuning point, and what I really need to know is how to determine when the stray RF is minimized if not eliminated. # Irv, # Nice to hear that you got something working and are back on the air. However I want to point out some incorrect assumptions you made earlier about RFI and stray RF from counterpoises. # The subject of radiating counterpoises in an apartment was discussed in this Usenet group a few years ago. Here is a link that provides some more info for you. # How much does a counterpoise radiate? - http://www.radiobanter.com/showthread.php?t=117807 # The counterpoise you have inside your apartment will definitely radiate into the building as will the length of antenna running from the tuner to the hole in the window. In another post you said you were running QRP at 5 watts. You may not have any # RFI problems with other electronics in your building at these low levels. If you crank up the power to 100 watts I don't think you will be so lucky... - True. A few years back with 100 watts and an attic loop, I fried the solid state heat/AC thermostat. I put a ferrite choke on the leads of the new one. Wayne W5GIE |
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