Modified Grenade Transmitter

Modified Grenade Transmitter
by Radio Anarchy

The Parts List for the Shortwave Transmitter:

• R1 - 33K ohms, ¼ watt, carbon.
• R2 - 4.7K ohms
• R3, R6 - 100 ohms
• R4 - 22 ohms
• R5 - 100 ohms, 1 watt, or greater.
• C1 - 47 to 470 pF, or greater, silver mica or disc ceramic. Better yet, a trimmer capacitor, to slightly change frequency ±1 KHZ.
• C2 - 10 to 140 pF trimmer.
• C3 - 100 to 220 pF, silver mica or disc ceramic.
• C4 - .01 to .05 µF.
• C5 - 300 - 800 pF, or (? ? ?) variable capacitor. Use an Arco TC-4610 (260-900 pF) compression trimmer.
• C6 - .01 to .1 µF.
• C7 - 1000 µF or greater, electrolytic, 25 volts or greater.
• X1 - Fundamental mode crystal, 5 to 8 MHz.
• T1 - On an Amidon T50-2 toroid core, primary is 26 turns of #28 magnet wire closewound, secondary is 2 turns wound over the primary windings.
• T2 - On an Amidon T50-2 toroid core, bifilar wind 6 to 8 turns of #18 magnet wire. See note 1 for details.
• L1 - 2 mH or greater, .5 ohm or less resistance. Use the inductor from Radio Shack p/n 270-0030A HD Noise Filter. One could also use the 4 or 8 ohm secondary of a medium sized audio transformer, or the secondary side (6 to 24 volts) of an AC mains power transformer.
• L2 - .7 µH.   Wind 7 turns of #16 magnet wire on a 5/8 inch diameter form, then remove form.
• L3 - 1.4 µH.   Wind 11 turns of #16 magnet wire on a 5/8 inch diameter form, then remove form.
• Q1 - 2N2222
• Q2 - 2N2907
• Q3 - IRF510 or IRF511 (Radio Shack p/n 276-2072A)