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TUCoPS :: Radio :: icr71a.txt

Icom ICR71A mods




ICR71A
          TRICKING THE ICOM R71A TO TUNE BELOW 100 KHZ

                        Bob Parnass, AJ9S


     The ICOM R71A general coverage receiver is designed for
     VLF reception down to about 97 kHz.

     The following steps will  confuse  the  microprocessor-
     based  controller sufficiently to permit reception down
     to 0.0 kHz:

       1.  If all 32 memory  channels  contain  frequencies,
           use  the FUNC and CLEAR buttons to clear a memory
           channel.

       2.  Place VFO/M switch into the M (Memory) position.

       3.  Using all the manual dexterity  you  can  muster,
           rock  the  MAIN TUNING knob back and forth, while
           simultaneously rocking the MEMORY-CH rotary  con-
           trol  to  switch  back and forth between a memory
           channel with a frequency in it and a clear memory
           channel.
CONTINUED IN FILE ICR71A.1
 


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