| 摘要 |
PURPOSE:To enable even the station licensed for only the radiotelephony to perform the intermittent communication by changing the sound oscillation into the speaker tone through intermittence via the key and receiving the speaker tone through the mike for transmission with modulation of the oscillator. CONSTITUTION:Sound oscillation 2 is intermitted via key 1 to be changed into the speaker tone, and mike 4 receives the speaker tone. Then OSC7 is modulatedat BM6 and via AMP5, and the intermittent communication is carried out via antenna 12 from FIL8, DIV9, BM10 and PA11 in that order. Thus even the station licensed for only the radiotelephony can perform the intermittent communication owing to the sound intermittence. Thus BM6 receives the 100% modulation, and FIL8 uses LSB or USB suited to OSC7. And oscillation 2 features the oscillation frequency arriving at the carrier center of FIL8. |
