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Pages: [1]
1  eHam Forums / HomeBrew / RE: Crystal Radio earphone best price on: November 13, 2011, 04:13:52 PM
http://www.midnightscience.com/catalog5.html#part9

About 2/3 of the way down
get extra those crystal earphones can be buggy.
What is common today is the use of piezo elements.

For scouts , I would recommend the oatbox.
http://www.sciencebuddies.org/science-fair-projects/project_ideas/Elec_p014.shtml

You can get real elaborate with the coke can capacitor.
http://www.tompolk.com/crystalradios/cokecancapacitor.html
2  eHam Forums / Computers And Software / RE: USB->Serial Adaptor Frustration on: October 04, 2011, 09:11:46 PM
This usb to rs-232 adapter from Frys uses the FTDI ft232r chip. It has operated any serial device plugged into it. Running win 7 64 bit.
http://www.frys.com/product/5229677?site=sr:SEARCH:MAIN_RSLT_PG
You can find it in the component section.
Pages: [1]

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