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73 Amateur Radio - Free and Open Source Software
73 Amateur Radio - Free and Open Source Software
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Continued from page 14<br />
The priority watch function can sample any<br />
memory channel. It can also step through the<br />
memory channels, incrementing once each<br />
sample. It'll even do all this while you're scanning<br />
through the band!<br />
All in all, the memory management features<br />
of the FT-411 are the most flexible I've ever<br />
seen , and the operations are surprisingly easy<br />
to do,<br />
Transmitter: Audio reports indicate that the<br />
Kenwood is "oassrer" but more natural, while<br />
the Yaesu is punchier and more "communications"<br />
styled. Output power in the HIGH position<br />
is the same, but the Kenwood seems a bit<br />
stronger in the LOW position. There is no mention<br />
in the Yaesu specs of the output in the LOW<br />
position.<br />
Receiver: The Yaesu has wider cove rage,<br />
and selectivity is better. The Kenwood, with<br />
one of the " hottest" receivers I've ever seen,<br />
makes clear audio fro m signals th e 41 1<br />
doesn't even hear. But comparisons with<br />
other rigs show the Yaesu to be about aver-<br />
"This radio has a ten-number<br />
DTMF autodialer!"<br />
Autodialer<br />
This radio has a ten-number DTMF autodialer!<br />
It stores numbers of up to 15 digits each,<br />
sending them at the touch of a button. If you're<br />
a control op or use an autopatch, it's just<br />
great. The procedure lor entering numbers is<br />
a bit cryptic and could have been done better,<br />
but it's worth getting the hang of it. Especially<br />
for portable operation, this is one feature that<br />
will make you wonder how you ever got along<br />
without it. Of course, OTMF may also be manually<br />
senl.<br />
Documentation<br />
With all these features, some good instructions<br />
are in order, and they are provided. The<br />
book is written in clear English and takes you<br />
easily through the operations. Also, a walletsized<br />
"crib card " set is provided.<br />
Comparisons<br />
I couldn 't help but compare the 411 to my<br />
Kenwood TH-25AT, a rig I just recently reviewed<br />
. Here are some observations:<br />
Mechanical: The Yaesu is slightly smaller<br />
and noticeably lighter than the Kenwood, I find<br />
the front-mounted LCD easier 10 use, though<br />
the top-mounted one on the Kenwood is better<br />
protected from scratches. Both rigs feel good<br />
and solid.<br />
Features: The Yaesu does everything the<br />
25AT does, and lots more. Unique 411 features<br />
include 49 memories, direct frequency<br />
entry, and autodialer.<br />
18 73 Amateur Radio • June, 1989<br />
age, and certainly adequate-any<br />
you can hit, you can receive.<br />
The Kaboom Audio Enh ancer<br />
My principal complaint about this radio is<br />
that the audio output power is just too small , In<br />
addition, the FT-411's speaker has a tinny,<br />
fUZZy quality. There's an easy way, however,<br />
to improve this.<br />
A big part of the audio problem is acoustical.<br />
The interaction of the speaker with the size<br />
and depth of the grille greatly affects the volume<br />
and sound quality. Deliberately blocking<br />
part of the speaker causes a significant increase<br />
in volume, along with a reduction in<br />
fuzziness. The improvement is caused by the<br />
creation of a resonant chamber between the<br />
speaker and the grille front.<br />
Go to an art store and gel a clear adhesive<br />
plastic film with paper backing. If you can't<br />
find this, substitute with wide adhesive tape,<br />
as long as il is fairly thick. Cut out a piece 1"<br />
wide by 13116" long. Cut out from the 1 ~ wide<br />
piece a cen ter piece 3/16" wide by 5/ 1 6~ long.<br />
If you hold the rig so thai you're looking into<br />
the grille from the bottom, you can see the slot<br />
for the microphone in the upper left corner,<br />
and also the vertical center post in front of the<br />
speaker. Wipe the grille with a tissue, peel off<br />
the paper backing from Ihe back of the plastic<br />
film, and paste the film onto the rig with the top<br />
edge centered over the top horizontal sial,<br />
and the hole centered over the vertical post.<br />
The left edge of the film should just clear the<br />
right side of the mike slot. Exact placement<br />
isn't critical. Finally, using your fingernai l,<br />
bend the edges of the film Into the top and<br />
bottom slots.<br />
That's it-the radio will now sound a whole<br />
lot better and you haven't even voided your<br />
warrantyl<br />
Nit-Picks<br />
The manual, while easy to read, omi ts a<br />
great deal. Although a full schematic is provided,<br />
audio output and TX current drain specs<br />
are given at 12 volts, so I have no idea what<br />
they are with normaI7.2-volt battery use (they<br />
should be a lot less). No mention is made of<br />
the lithium battery, nor of how to wire a microphone<br />
for the rig. You can review the contents<br />
Conclusion<br />
This is the most advanced single-band HT<br />
available today. Despite the list of nit-picks,<br />
its bevy of features makes the FT-41 1 an<br />
outstanding value. If you want a powerhouse<br />
of features in your pocket and can live with<br />
the low audio output, this is the rig 01 your<br />
dreams. FJ1