Icom IC-746, Часто задаваемые вопросы

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IC-746 FAQ
While nobody has figured out what the band edge beeps correspond to, we have been able to
rule out several possibilities.
They do not correspond to the amateur radio frequencies in Japan. For that matter, they do
not correspond to the ham allocations in any of the IARU regions.
They are not a combination of all available amateur radio from around the world (i.e. a
minimal superset). They are much wider than that.
As wide as the band edge beeps are, they do not encompass all of the MARS (Military
Affiliated Radio Service) or CAP (Civil Air Patrol) frequencies. To do that still requires a
"mod".
The known "TX mods" do not affect the band edge beeps.
Anybody have any other ideas or info?
6.13 How I reset back to factory default settings?
The procedure is listed on page 81 of the Instruction Manual as well as on Icom's WWW site
at:
http://www.icomamerica.com/support/cpureset.html#amateur
While pushing in [F-INP] and [M-CL], push [POWER] to turn power ON.
6.14 What "birdies" does the IC-746 have?
"Birdies" are spurious signals internal/inherent to the rig itself. They are normally generated
by harmonics and/or mixing products of the internal oscillators (IF, VFO, display driver,
CPU clock, etc...) that are picked up by one of the RF/IF stages of the rig.
Birdies are usually perceived as silent carriers on AM and FM and as steady tones on SSB
and CW; sort of like someone tuning up on that frequency. Thus the perceived frequency of
occurrence is affected by your preferred sidetone.
Often, local noise sources can be mistaken for birdies.
True birdies tend to be consistent from rig to rig.
The following frequencies have been submitted as possible birdies. There have not been
enough correlated reports yet to confirm these as birdies. More information and reports are
needed.
30.002.0 # 10.503
1.955.5 #
50.001 13.991.0 #
1.957
50.006 13.999.0 #
1.981.0 #
50.533.0 # 18.078
3.608
144.400 18.433
7.008
21.150
9.468
28.001
10.106
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2003-02-08