Note
QST, Oct 1961, p. 146.
QST, Oct 1962, p. 139.
QST, Jun 1964, p. 183.
QST, Feb 1965, p. 122.
The Dl-1 RF Distortion Indicator assisted in the adjustment of SSB transmitters, displaying trapezoid or RF envelope patterns on its 3 inch scope tube.
Features
– Displays RF trapezoid or RF envelope patterns. Uses 3" scope tube with full mu-metal shield. Green filter provides unusually sharp display.
– Trapezoid pattern compares detected envelope of exciter with RF envelope of amplifier or transmitting converter.
– The optioanl Two-Tone Plug-In oscillator (Model TT-1) provides the signal when making adjustments to the amplifier or transmitting converter.
– No modifications or internal attachments to exciter or amplifier required. Rear connections provided for 50-70 ohm coax lines.
– Operates 160 thru 6 meters. NO TUNING required. Handles any power 5 watts to 2 KW PLUS.