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Vibroplex® - The Oldest Name in Amateur Radio.

Vibroplex® is the oldest continuously operating business in Amateur Radio, now in our 119th year.  We were founded in New York in 1905 by Horace Martin, the inventor of the semi-automatic or "bug" morse code key.  After many years in New York and a handful of ownership changes over the 117 year period, Vibroplex® has been operating in Knoxville, TN since 2009.  Vibroplex® presently manufactures morse code keys under the Vibroplex® and Bencher® brands.  Our keys are manufactured in the USA.

Vibroplex® is also the owner of International Radio ("INRAD"), a manufacturer of aftermarket crystal filters and roofing filters usable for transceivers and receivers from the 1960's to the present day.  We are also the supplier of OEM filters for the Elecraft K3S transceiver.  The recent introduction of the INRAD line of microphone and headset products is the first of many new offerings coming in the future from this long standing brand name. 

Par Endfedz® antennas are made in USA by Vibroplex® and are the best selling portable antenna in ham radio.  End fed single band and multi band models.  See the hundreds of positive reviews of these products posted to

With W7FG Vintage Manuals, Vibroplex® creates and ships high quality reproduction manuals for vintage Amateur Radio, shortwave radio, scanners, audio and test equipment.  We have 17,000 titles in stock for service and operation manuals for equipment from the 1930's to the present day.

In addition to our own products, Vibroplex® is the USA and Canada distributor for Spiderbeam, Easy-Rotor-Control, SPE Expert linear amplifiers, GHD and Hi-Mound code keys, mAT-TUNER automatic antenna tuners and DXPatrol receivers.