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In the other thread (longwave sensitivity) you mentioned 6 volts P-P and possible damage to your RSP. I posted the safe levels for the RSP there.arcosine wrote:I put a scope on my long antenna and it reads 60 volts peak to peak RF from local AM stations.
As a new oscilloscope owner, I'm curious about the details of how you hooked this up. I know my scope has 1-megohm inputs, so for most RF devices including my antennas it's necessary to add a 50-ohm feed-through terminator. Did this also apply in your case? Also, I'm not sure if I recall the details of your antenna -- is this a longwire, with the measurement between its feed point and ground? Or a dipole?arcosine wrote:I put a scope on my long antenna and it reads 60 volts peak to peak RF from local AM stations.
Thanks for the info. I was curious specifically how you connect the antenna to the scope input. (I.e. what cable and/or connector are you using between the scope and antenna.) Also, which scope are you using?arcosine wrote:I used the scope input and the antenna is a 900 ft wire grounded far end at lake, between 5 and 20 feet high, running approximately northwest. Like any loop its directional. About 3k ohm at MF/LF. DC loop resistance s about 50 ohm, mostly from wire, .03 aluminum welding wire. I have ground stakes at both ends and 75 ft of 300 ohm lead into the shack. The matching transformer is 8 turns primary one turn secondary on ft-87A-F core, Also have 30 turns to a 500 pf variable for tuning.