This is definitely a compromise system, there's no arguing that point but it's all I can work with at this point in time. I live on the 14th floor of a NYC apartment building and management will not permit antennas on the roof. The only place I can put an antenna up is on the balcony. The linear doesn't get used often; only when necessary to make or complete a contact.
Interestingly enough though, this problem is the only RF related issue I'm having. I haven't noticed any other problems with my electronics apart from this. No TVI, no telephone interference, no computer problems or network issues... By the way, don't know if you read my previous email but this problem stops if I turn the peak mode off on the watt meter. The alarm still works and the amp bypass functions if I pass the predefined threshold in average mode, but the moment I go back to peak mode this issue returns. James K2QI -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Brown Sent: Tuesday, July 14, 2009 9:13 PM To: Elecraft Reflector Subject: Re: [Elecraft] RF feedback? You're running 1.1kW to a screwdriver with essentially no radial system and you're surprised that you have RF issues? THAT'S your problem! Build yourself a real antenna. This antennna is a disaster -- it's using every wire in your house and shack as a counterpoise. No wonder you have RF issues! Chances are that you're also lighting up every other piece of electronics in the building. Screwdriver antennas are designed to work against the body of a vehicle (and a pretty beefy vehicle at that) as a counterpoise. They are EXTREMELY compromised antennas. The "choke" you describe is next to useless. If your can find structural steel on your balcony, you should use that as the counterpoise for this antenna. The building will still be pretty hot with RF, but it should work a lot better than what you have now. >Please clarify the K3 pin 1 issue; Study the reference I posted. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
