One,  two,  three and four valve (tube) receivers based on original 1920's and 1930's designs such as the  "Twinplex".

In 1912, the brilliant American inventor, Edwin Howard Armstrong, discovered a method of feeding the signal from the Audion's (tube) plate back through its grid, which increased the amplification capabilities of the circuit many times. He found that increasing this feedback caused the valve (tube)  to oscillate at radio frequencies. This valve (tube) made selective reception and amplification of radio signals not only possible, but easy. Armstrong's invention was unique in that it performed three functions in one circuit: it was a rectifying detector, a positive feedback amplifier, and a oscillator all in one envelope. This stunning invention, known as the "regenerative detector", raised the radio receiver to a level that made broadcast radio reception accessible to the masses of the world.

We offer four radio kits based on Armstrongs original designs, which were  popular to constructors through the mid 1920's and into the 1930's.>

Easy assembly, for example no coils to wind - that has already been done for you! And  simple to follow instructions with both schematics and wiring diagrams!

You get a manual, all the parts including valves, sockets, jack plugs, tuning capacitors, coils, resistors, wire, nuts and bolts etc, and we even include  an earpiece.

Please note that due to the difficulty in obtaining component from the valve era, we may from time to time alter the type or style of components used in these kits, this however does not alter the kits performance. All parts supplied are either NOS (that's New Old Stock) or brand new current production. The pictures are representative of the finished kits, however we reserve the right to change specifications as the need arises.