Intro |
The New Jersey QRP Club puts out a little transmitter called the Fireball 40. This transmitter is based on a TTL oscillator for 10 meters. The 10 meter oscillator can be divided down by a pair of 74LS74's to operate on 20, 40 or 15. Parts are supplied for operation on 40. |
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Unassembled Kit |
On the left is the fireball kit as received from the New Jersey QRP Club. The silver box is a 28 MHz oscillator. The 2 chips are dividers used to reduce the oscillator output down to 40 meters. |
Completed Kit |
The completed Fireball transmitter in the obligitory Altoids tin. In addition to the supplied parts, at the lower center is an additional toroid, cap and 2 diodes which comprise the TR switch. The empty space to the right is for the optional 1 watt PA. Between the oscillator and the TR switch is space for a TICK keyer. |
Here is another view of the transmitter. The transistor-like thing to the left of the closest 7474 is a three terminal regulator. | |
27 Dec 2004