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The all new iGen Hybrid Tube Regen
Radio Kit (July 2009) If you ever wondered how those early radio and wireless receivers
from the 1920's worked, then why not build your very own. Or
maybe you just want to learn how valves work, but are afraid to
tackle a mains powered set, then try this battery powered kit,
it is a great way to learn a new hobby!
The iGen regenerative radio receivers
based on original 1920's and 1930's designs with a modern twist.
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 two radio kits based on Armstrong's original designs,
which were popular to constructors through the mid 1920's
and into the 1930's. Both kits are based on a two vacuum
tube plus solid state audio amplifier design. The larger kit
comes complete with a silk screened front panel, a rear panel
and high quality speaker. The smaller kit is a complete
regenerative receiver on a single printed circuit board.
Both the iGen receivers run off 12 volts, so are completely
safe to build and use, no nasty high voltages, it is a great
way to learn a new hobby!
Easy assembly - all the components are mounted on a high
quality silk-screened fibre glass printed circuit board.
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.
Specifications
- Type: Regenerative Hybrid Tube and Solid State
- Tube #1: RF Amplifier stage
- Tube #2: RF Detector stage
- Tuning: Air Variable Capacitor with built in 3:1
reduction
- IC Amp: 1/3 watt Audio amplifier stage
- PCB: high quality silk screened printed circuit board
- Front Panel: high quality silk screened panel (Note 1)
- Output: High quality 4 inch speaker (Note 1)
- Power 12V DC Batteries or optional 12V Mains Adapter
- Coverage: Broadcast Band / Medium Wave
- Controls: Regeneration, Volume, Tuning
- Connections: Aerial, Earth, Phone
Optional Accessories
- UK 12V Mains Adapter see Part No IGEN-UK-PSU
- Set of Short Wave coils see Part No IGEN-SW-COIL
- Low Impedance Headphones see Part No IGEN-PHONES
Note 1: Available with iGen PLUS kit
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