Although it was possible to design and build a simpler transmitter, the goals of output power and stability could become mutually exclusive when trying to operate with only one tube. For a novice class license holder of 1951 the Heathkit AT-1 represented a solid performing rig that would be relatively easy to construct and operate.
The Novice remained the primary entry license until the Morse code requirement was eliminated for Technician licenses in 1990. On HF it permitted code transmissions only, with a maximum power of 75 watts, (input to the transmitter's final amplifier stage) on limited segments of the 80, 40 and 15 meter bands.
|For $29.50 and the loan of a few tools you could get some use out of that new novice license|
|MOPA transmitter using a 6L6 and an 807 as the power amplifier (ARRL Handbook 1941)|
|Heathkit AT-1 Circuit diagram showing band-switching arrangement and link coupled output|
|The Heathkit VF-1 Variable Frequency Oscillator|
|The Heathkit AC-1 Antenna Coupler. Designed to attach to a single wire by the insulated post on the front panel.|
|Heathkit AC-1 Antenna Coupler circuit diagram|