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Borden Radio
"Armstrong one tube Regenerative Receiver"
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This is an assembled regenerative AM broadcast band
receiver kit, developed and sold by |
Lance
Borden. |
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It uses a 3S4 vacuum
tube and requires a long wire antenna and ground
connection to operate. |
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Matt Knoebel assembling the radio in
August of 2012. |
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Parts are mounted, now about
to wire up the set. |
Construction took about 4 hours,
including winding the coil. |
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This was Matt's first radio. He got no
help from yours truly, other than some assistance
interpreting the
wiring diagram and to supply him with a pair of high
impedance headphones. |
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| The radio worked the first time
it was turned on. Local stations are easy to
tune and come in loudly. Listening at night, if you
disconnect the ground wire you can pick up some distant
stations. With your headphones on and your hands on the controls, you give just the slightest touch to tune in some
far off signal. The room should be quiet, it's not
something you do with the TV on or during a party! |
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The radio under de-construction. The coil
has been removed!
In spite of the set
working so well, in the above photo the coil has been
removed and is about to be rewound.
Why? See the next page! |
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