240 - TenTecWiki

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====== One-Sixty Converter Model 240 ======
{{240.jpg?150|}}
===== Description =====
Provides Models [[540]] and [[544]] transceivers with transmit and receive capabilities on 160 meters.  Crystal controlled mixer converts 1.8 - 2 MHz signals to 3.5 - 3.7 MHz which are then tuned in the 80 meter mode.  The crystal oscillator also mixes with the 540 / 544 VFO signal to provide proper injection for the transmitting mixer in the transceiver.  A low pass filter is switched into the antenna line to reduce harmonics.  Power input is reduced a nominal 25%.  Panel switch also selects the two transceiver crystal channels when fixed frequency use is desired.  Includes cables (less crystals).  Housed in matching enclosure.


===== Specifications =====
  ***Frequency Range:** 1.8 - 2.0 MHz.
  ***Sensitivity:** 1 uV for 10 dB S+N/N max.
  ***Receiver Feedthrough:** -55 dB typical.
  ***Power Input to Final:** 150 watts, approx.
  ***Panel Controls:** 2 pos. band switch, 1.8 - 2 and 3.5 - 30,; 3 pos. mode switch, VFO, X1, X2.
  ***Semiconductors:** 1 IC, 3 transistors, 7 diodes
  ***Powered by 540/544 transceivers.**
  ***Size:** HWD 2.5" x 10.375" x 6.5"
  ***Weight:** 2 lbs.

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