This ever happen to you? (little story about RF signals and breadboarding)

[Earthscum]

Tonight I was testing an SCR for some real perimeters, and got to fooling around with floating the anode and cathode between a pair of 10k's, and biasing the gate with various variable schemes and watching voltages.

Anyways, I hooked up a jfet preamp to send signal through and ended up messing with a couple caps and had one hooked across the anode and cathode. One particular bias, I found a sweet distortion and gain. So I gave a listen and started wit the caps.

Not but 10 seconds after I started just playing my bass and not touching the circuit, my girlfriend comes upstairs trying to get signal to her phone, to the point of about to throw it across the room. I looked at the way I had my circuit hooked up, the coil of cable on the ground, and put 2 and 2 together and hit the power.

As soon as the caps discharged, all her bars came back, and my buddy's phone started beeping at him upstairs.

Whoops! 

(This isn't the first time... last time was with inverters and a high impedance ultragain circuit. It's the diodes, I believe? Small capacitance in a high impedance circuit?)

[Zipslack]

I would be interested in seeing a diagram of what you had...it could be a "useful" demonstration for my high school class (and yes, I realize that jamming communications is a federal offense.....)

[BubbaFet]

Once while messing around,
I replaced the 741 op amp in
my mxr distortion+  with a
magnetron from a microwave oven,
and a spaceship landed in my yard!
They told me to knock it off.

[StereoKills]

You didn't happen to be building this did you

http://www.circuit-projects.com/rf-radio-frequency-circuits/simple-cell-phone-jammer.html

I stumbled on this a few days ago ironically.