40M Cw Transmitter Circuit

  
This CW transmitter has an output of up to 3 W. By using 24 V on Q2, up to 10 W output can be obtained. If a 24-V supply is used, Ql must not see more than 12 V. Connect 12 V between junctions C3, R2 and L2, and remove L5. LI should be a low-Q 18- to 20- inductor.
40M Cw Transmitter Circuit - schematic

R6 can be used (up to 47 ) to reduce the Q further.



 

Recommended videos


  • #228: Radio Fun: Michigan Mighty Mite CW transmitter and a low pass filter
    Duration: 9:28.
  • 1W FM Amplifier Circuit Boost Low Power Transmitters
    Duration: 5:36.
  • Simple FM Transmitter Circuit
    Duration: 3:02.

News


  • Radio magazine
    Any transmitter setting can also be scheduled from program sources to power. WorldCast will offer the new audio processor software feature on new units and as an upgrade to many Ecreso currently in the field. WorldCast Systems will ...
     21 April 2017
  • RF Globalnet (press release)
    The Bridgeport site is one of several locations that will see a complete replacement of systems, including a modernized building to house all transmission, auxiliary and cooling systems. All will be outfitted with the HD Radio
     31 March 2017
  • Radio magazine
    In many cases, the GatesAir transmitters will replace aging tube models, which will help with Cumulus' goal of reducing operational expense and energy use in its plants as part of the oadcaster's sustainability efforts. The order includes air <
     29 March 2017
  • Radio World
    Over the last few years, we have added smaller sites to our network and therefore needed to source some lower-power (up to 2 kW) for these locations. Many of these sites are unmanned, thus it was essential to have a high level of
     16 March 2017
  • Radio magazine
    11, all NRK, P4 and Radio Norway were shut down in that region. All local stations in Nordland continue to transmit on FM, as will the majority of all local radio stations in Norway. NRK also states that there has been no dramatic drop
     23 February 2017
  • Radio magazine
    Radio magazine CBS Radio owns and operates five stations in Sacramento, Calif.: KSFM(FM), KZZO(FM) and KYMX(FM) reside in one facility, while KHTK(AM) and KNCI(FM) are based in another facility roughly 10 miles away. The KHTK(AM) and KNCI(FM)
     13 February 2017
  • Radio World
    KCRW is a six-station cluster consisting of KCRW, Santa Monica, KDRW, Santa Barbara, KCRU, Oxnard, KCRY, Mojave & KCRI, Indio, and KERW, Los Osos-Baywood Park. Additionally it operates seven low power translator stations in the communities o
     20 December 2016
  • Radio World
    Eric Pere: Generally, operate far more efficiently than DTV or DAB transmitters so, the advantages of water cooling aren't as significant in the FM sphere. If a manufacturer ..... Fewer engineers entering the market today do so as
     23 November 2016
  • EE Times
    EE Times Power AmpsThese amplifiers are sold as components of , which are FCC certified for sale in the U.S. The issue, according to the citation, is that although the containing the amplifiers are FCC certified, the power amplifiers do
     27 October 2016

.