Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)

2019-10-28 Thread David Christ
Sometimes it happens, I got permission for a 30 foot tower and a K4KIO beam. When asking permission I emphasized the emergency and public service angle and showed I had a one million dollar umbrella policy. Those are dirt cheap. Had a picture of a similar installation which kept the scary

Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)

2019-10-28 Thread Lyn Norstad
Who ... me? It seems like foreign territory to fall into that category after spending most of my 50 ham years on the other end of the stick. When I retired a couple years ago, and decided to get serious about ham radio again, I managed to successfully run for a seat on our HOA Board (it's easy

Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)

2019-10-28 Thread Grant Youngman
Don’t you love it when guy’s are taking about their latest large antenna projects? I read these things, look wistfully out back into my 30’x30’ townhouse courtyard, and wonder if I can dare put my Buddipole 40M dipole up one more foot without attracting the ire of some resident who will report

Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)

2019-10-28 Thread Phil Kane
On 10/27/2019 11:33 AM, Lyn Norstad wrote: > Your mileage may vary, but for anyone looking to try something new > (actually a very OLD design), it's a fun project. If I had 400 feet for an antenna that's the type of antenna that I would go for too, but I barely have 400 inches. Have fun with

Re: [Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)

2019-10-27 Thread Lyn Norstad
Antennas are my passion. In 50 years of hamming, I have probably experimented with virtually all variations of wire antennas. My current antenna is far and away the best I have ever built. Without going into all the details of my design considerations (location, regulations, budget, etc.)

[Elecraft] RX noise and 2-wire lines (was: KPA1500 RFI on 12m)

2019-10-26 Thread Victor Rosenthal 4X6GP
Jim, I have to disagree about balanced line. Unlike coax, both conductors are exposed to external RF fields, so common mode noise will be rejected. If the antenna and line are properly balanced (not always easy to do, I admit) and if it is fed through a balanced antenna tuner, there is no