Average Reviews:
(More customer reviews)My son needed to build a crystal diode radio for the Communications Merit Badge in the Boy Scouts. I searched the internet to find a good price and this was it. The instructions were fairly easy to understand and my son built it himself without supervision. But he was unable to get it working. I took a look at it and found that the problems he had were primarily due to incorrectly orienting the kit's chassis to the drawing. Maybe colored springs would make it easier to know what connects where but I can't fault them for that, there needs to be some challenge. The real issue I have with the radio is it doesn't pull in radio stations very well.
From my own experimentation I grounded the kit correctly and hung the antenna at its full height. I could only find one radio station and it was so quiet I could just hear the peaks of the conversation. I went over the connection two more times to ensure that I hadn't shorted anything (a real problem with spring clips) and never achieved any better reception.However the radio worked just enough for my son to get his merit badge.
I have built these radios when I was a kid and they actually worked well. I think this needs to be re-engineered to improve the sensitivity and increase the volume coming out of the ear phone.
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Build Your Own Crystal Radio A good basic kit with everything you need to build a very simple crystal radio. This is not hi-tech hi-fi. Geared for ages eight and up, it is a complete kit with wonderfully straight forward instructions which walk the experimenter through hooking up tuning needle, crystal diode, and earphone, and experimenting to find useful antennas. (Sorry wire coil is already wound.) Excellent education, recreation and discovery device all at the same time. A simple kit with hours of fun in it.
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