I made a radio?

[Tony]

Hi,

I put together an oscillator with a ring mod and found it picked up a radio station... How do you remedy that?

I might just keep it that way for my own use.

Thanks,
Tony

[markr04]

Off the top of my head, I suggest shielding it with copper.

[RDV]

Try a small value cap to ground on the input. Just remember if you go to large you'll cut highs along with the RF.

RDV

[bazzwazzle]

Try a small value cap to ground on the input. Just remember if you go to large you'll cut highs along with the RF.

RDV

what would you consider a good value to start with.

[petemoore]

.001uf-.0047uf

[Tony]

Thanks for the info, I'll give it a try. Thanks.

[Paul Perry (Frostwave)]

I just had a vision.. a radio in a wah case, you tune it by foot!! could be a good party trick, tune around & then play along!! I'd pay to see that! (once..)

[bazzwazzle]

I just had a vision.. a radio in a wah case, you tune it by foot!! could be a good party trick, tune around & then play along!! I'd pay to see that! (once..)

ya and then you have a switch to go back to normal and use the wah again normally. Sweeeeeeeet...

[Paul Perry (Frostwave)]

There are different ways of tuning FM radios, but at one stage they were controlled by a pot generating a control voltage that changed the capacitance of a varactor diode (a reverse biassed diode with an inbuilt capacitance that changes from 3 to 20 pf or so). Then therr are digital ones with an up/down autoseek..