k9rzz
Member
I suddenly got the bug to try some slinky antennas, Don't know why. Guess 'cuzz I never had one before.
I put up one inside the room here. Worked okay. Bought another and connected it to the original, ran that down the hall ... worked better. Hmmmm.
Off to the store and bought TWO more!
So now I've got 260 ft of steel wire on a rope that's about 75 ft long.
Then I moved it to a higher spot and pointed it at Europe.
The results are interesting. When compared to a 100 ft random wire that's a little bit higher than this, the random wire beat the slinky every time by 10 to 20 db *except* in the 5 to 6 mhz range on signals coming from the direction the slinky was pointed. Then the slinky out performed the wire every time!
For example when listening to the aero stations such as Santa Maria on 5598khz or Gander 5616khz or RAF Volmet on 5450khz, the slinky gave louder signals consistently and with less noise. The airplanes were much clearer, instead of being half buried in noise, they were loud and clear.
FWIW, I've got it fed through a 9:1 transformer and some 50 ohm coax. I may try it without the transformer next.
Why it performs in only such a narrow freq. range I don't know. More testing needed!
Just thought I'd share.
I put up one inside the room here. Worked okay. Bought another and connected it to the original, ran that down the hall ... worked better. Hmmmm.
Off to the store and bought TWO more!
So now I've got 260 ft of steel wire on a rope that's about 75 ft long.
Then I moved it to a higher spot and pointed it at Europe.
The results are interesting. When compared to a 100 ft random wire that's a little bit higher than this, the random wire beat the slinky every time by 10 to 20 db *except* in the 5 to 6 mhz range on signals coming from the direction the slinky was pointed. Then the slinky out performed the wire every time!
For example when listening to the aero stations such as Santa Maria on 5598khz or Gander 5616khz or RAF Volmet on 5450khz, the slinky gave louder signals consistently and with less noise. The airplanes were much clearer, instead of being half buried in noise, they were loud and clear.
FWIW, I've got it fed through a 9:1 transformer and some 50 ohm coax. I may try it without the transformer next.
Why it performs in only such a narrow freq. range I don't know. More testing needed!
Just thought I'd share.
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