6P1 tube transmitter 5W tube shortwave transmitters MW Transmitter

This kit comes in accordance with the following modifications ( remove air double circuit optimized , providing a suite of circuit prevail ) ,Suite of high -quality, high stability and high withstand voltage mica capacitors, Shortwave transmitter can be achieved :

Original:

L1 choice of 22mm wire on the MX-2000 toroid winding 100 turns. L2 determine the frequency of the radio emission . If the wave frequency is selected in the segment , L2 can be used on a 35mm wave magnet wire 30 +50 turn , the choice of 13mm or 25mm paper tube on the wire tightly wound 90 turns. Such emission frequency will fall between 550-1650kHz. If I choose when shortwave band , L2 is available in 0.5mm enameled wire between the 16mm tubes are around 9 turns. This constitutes the oscillator frequency falls between 6 ~ 18MHz. C5 air double its capacity 360pFx2. B1 is the original machine power transformer. High-pressure part of the rectifier switch 4 IN4007. B2 is the original output transformer. C2, C3, that the machine was split mica capacitor , wherein the C2, C3 pressure is preferably greater than 400V . R1, R2 can also purchase their own cement resistors. Yak scattered power due to the larger , its power -election ≥ IW. TX 1/4 antenna , used for some thick wire instead of ' emission wavelength length of about 1/ 4 . I selected is 3mm, 8m long wire . Without the use of the copper-clad circuit is mounted directly with a plastic board on which a diamond. Holes , scaffolding welding can be. As long as the good components , installed after the start-up circuit that will be able to see the flow of electrons within the G light blue when the start-up , accompanied by "hissing " sound. If the conditions do a simple field strength meter , so that by adjusting R2 launch strong maximized. Vertical antenna may be installed through the insulator wall. After connecting the antenna input at B2 at around 5W audio signal from a radio transmitter to pull away , the radio should be able to receive a clear signal distortion should not be obvious. If the launch is too hum , ground can be solved . After measurement , the transmitted power has 4.5W.

Customer feedback and work : the firstDoing the wave tube transmitters, produced, medium wave band in the band , I feel quite good fun , should be noted that the negative must be grounded, can greatly reduce the noise and harmonics.