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#1
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Antenna Pix: DIY and Store Bought -- Post 1 Antenna Pix: DIY and Store Bought -- Post 5 For the remote tuning did you use some geared down motor (stepper, etc)? Right now my loop's in the house but I would like to have a smaller weather-proof one mounted in the back yard on top of a 16-foot pressure treated post and as far away from background noise as I can get it. |
#2
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http://www.randombio.com/loopantenna.html With 1Meg resistors, I picked up "hum" on some stations, likely due to nearby power lines in my area. If I lowered the resistance enough to eliminate the "hum", the tuning of the antenna became very broad (low Q)... so I installed the manual tune box, seen above the rotor. jr |
#3
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Even though I don't have a remote loop I'll still on occasion use a portable (RF-2200, ATS-803A) to peak the loop because the receiver / tuner lacks a signal strength meter and the AGC masks audible peaks. When I first got into this stuff I thought everything had to be up on the roof or in the attic or on some high mast. But that's not the case with AM. Anyhow good work. |
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