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Icom ICR71A mods
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ICR71A.1
Continue rocking both the controls until a fre-
quency of 0.000.0 appears on the digital display.
4. Depress the WRITE button. This stores the 0.000
MHz frequency in a memory channel.
You can now rotate the MAIN TUNING knob clockwise
to tune up from 0.000 MHz to the frequency you
want. Be careful: if you rotate the MAIN TUNING
knob counterclockwise, the radio will immediately
revert to 29.999 MHz.
To tune below 100 kHz in the future, just recall the
0.000 MHz frequency from the memory channel and use the
tuning knob to tune upward. That way, you don't have
to use two hands every time you tune to a VLF fre-
quency.
I used a Wavetek 180 sweep/function generator to verify
that the R71A is indeed receptive to signals below 100
kHz.
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Bob Parnass AJ9S, AT&T Bell Laboratories - att!ihuxz!parnass - (312)979-5414
Downloaded From P-80 International Information Systems 304-744-2253
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