[R-390] Tellabs Speakers

[Barry]

Someone has asked for these so if I can still get them, it looks like they're sold.

IIRC, the response was something like 500 - 5,000kc so should be pretty nice for general radio work.

Regards,
Barry - N4BUQ


  Hello Barry & Crew,
  From past experience in the 60's & 70's I can say that TELLABS makes an excellent quality,  rugged and good looking Speaker with superb audio in the voice range.   We installed these in our Command Posts monitor Radio Traffic and other application such as monitor voice land-line communication.  These do have multiple impedance which is accessed from a bottom screw terminal board.  There are also, jumper arrangements to permit parallel operation.  If memory serves me correctly, I believe that they will operate on different DC Voltages between 18 to 48 volts.  If they are new, I would definitely grab them all.  If they are clean and in good physical condition, I would still take them.  These speakers are designed for continuous operation 24/7/365 day operation.  The current of 900 ma is for max volume and will operate at a lower current ratings with lower volume levels.  Also, I take it that the engineers at Tellabs specified the higher current so that the external power unit would operate cooler.  Each of our console positions had three speakers operating from one power supply.

  73,
   Glen Galati, KA7BOJ
  Tacoma, WA

  ps. A very blessed and Happy Mothers Day to All our wonderful mothers, past, present and to come.