This is the schematic of my very first solid-state 7 MHz QRP CW transmitter.
It requires less than 10 parts. A heatsink for the transistor is a must. The 1000 pF variable is adjusted for maximum brilliance of
the lamp. DX on this rig was ~1000km (VU2SL in Valsad).
source: http://nandustips.blogspot.com/2011/02/simple-7-mhz-qrp-cw-rig.html
It requires less than 10 parts. A heatsink for the transistor is a must. The 1000 pF variable is adjusted for maximum brilliance of
the lamp. DX on this rig was ~1000km (VU2SL in Valsad).
source: http://nandustips.blogspot.com/2011/02/simple-7-mhz-qrp-cw-rig.html
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ReplyDeleteNanda Kumar S,
ReplyDeleteYou'd be still shoving bones up your
nose if it wasnt for White North Americans
developing the transistor. Leave this guy
alone, okay? Blogger, thanks for putting up
the little pierce oscillator.
Milwaukee, WI
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ReplyDeleteThis comment has been removed by the author.
ReplyDeleteSure Bardeen, Brattain, and Shockley invented the point contact transistor in 1947.
ReplyDeleteWhereas Jagadish Chandra Bose had successfully demonstrated microwave radio transmission in 1895!
https://www.cv.nrao.edu/~demerson/bose/bose.html
J.C.Bose's demo preceded Marconi's successful 1897 wireless signalling experiment.
ReplyDeleteHi,I would very much appreciate a permanent link on your blog-site to my QRP shortwave website.
ReplyDeleteHere’s a link to my QRP-website: www.stationqrp.com
Thank you very much in advance!
73's
Jack