This is for an assembled board, you have to screw on the standoff feet. The quality tube valve is included. This detector board requires the 3-6vDC heaters of at least 300mA, it will replace the Germanium diode detector in a crystal radio, it has been designed to work with the Solderless Evaluation Board ( see my other listing) It will work with any of the 6AL5 type double diodes. A load resistor is switchable as some tubes benefit from a resistor across the diode section.
with a link to the board. No high voltages are required and are an ideal way to start experimenting with the valve.
Postage, In order to keep the postage to a minimum postage, is for untracked unsigned for. I always obtain a certificate of postage for proof of postage and always dispatch within a couple of days. Please leave response so I know you have received the parcel safely. If you require a tracked and signed for the parcel I can supply this service at cost.