Crystal / tube valve Radio - radio experimental DIY KIT Build-a-thon for Sale

Crystal / tube valve Radio - radio experimental DIY KIT Build-a-thon For Sale

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Crystal / tube valve Radio - radio experimental DIY KIT Build-a-thon :
$20.14

You need to solder the components to the board with this listing, full instructionsincluded.
The kit includes everything in the photo, including the vintage CV4504 diode tube valve. This is a single diode similar to half of 6AL5
You will need to provide a high impedance earpiece, if you are in the UK , I will supply an address you can buy for under £2 + postage in with instructions . You will also need an antenna and at least 5M indoors and a good earth connection. ( water pipe or safe earth) . Some experiment with aerial lenght will be required to find the optimum lengthfor your area
This is a crystal radio circuit with three ways to detect the radio signal, so good for experimenting with different diodes and crystals. The kit includes a Iron Pyrite crystal and "Cat's Whisker", a germanium diode and the tube valve diode detector.
The kit is suitable for the novice, with a well spaced out board.
The heater legs on the tube valve have been cut a little shorter for ease of identification. In the tube valve detecting mode a 5-6V dc supply of at lease 150mA is requires. I have found that old USB power suppliesat 5 volts give good results.
The shipping is large letter worldwide.
I can supply in volume discounts for clubs etc.
Full instructions with circuit diagram is provided , ( hard copy), these can be emailed for you to print off for extra copies.