Home |
Search |
Today's Posts |
#4
![]() |
|||
|
|||
![]()
On Feb 1, 1:48*am, bpnjensen wrote:
On Jan 31, 4:13*pm, dave wrote: On 01/31/2011 11:55 AM, bpnjensen wrote: Well, put up a new inverted-L antenna - 30 feet up a tree, 60 feet across horz and over the house rooftop (nowhere else to go!), base ~20 feet from house. *Using a winradio 9:1 unun matcher at the base, *not yet grounded*. *In fact, so far none of the RF chain on this antenna is grounded. *So far, so good - noise level *fairly* low (lower on almots all freqs than my DX-Ultra), AND signal strength on most bands roughly the same, varying depending on the band. *One good thing I do notice is that on strong MW stations, he antenna does *NOT* reveal a 60 Hz background hum like the DX-Ultra does - I consider this a good sign. *The far end is about 25 feet from the higher-tension power lines out back, and the near end is about 15 feet from the low-tension lines in front. *Next steps - 1 - Ground the 9:1 unun 2 - Bury the coax from house to base of antenna (about 18 feet underground) 3 - Install RF isolator (Either Radioworks or Wellbrook AFI5030) at the house with or without a ground stake connection, depending on what works the best. Have not had great reception so far this week, so no chance to really give it a workout. Further reports to come. *Thanks, guys, for all the input so far! It's a rule that putting up a new antenna causes bad dx space weather. Like washing your car makes it rain. ...or like a new telescope eyepiece means cloudy weather :-D- Hide quoted text - - Show quoted text - aka as Murphy's Law ! |
Thread Tools | Search this Thread |
Display Modes | |
|
|