Better Music Builder DX-211 Spécifications Page 9
- Page / 9
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
From March 2000 QST © ARRL
Nearly all of the control settings you’ll typi-
cally need to program and use this radio can
be easily located using just the keypad la-
bels. You won’t find yourself constantly
scrolling through hidden menus searching
for the particular setting you need to vary.
The receive audio—for both FM ama-
teur reception and WFM FM broadcast
band reception—is excellent. The level and
quality of the audio is remarkable. I often
found myself using the radio for listening
to FM music and news broadcasts at my
desk at work. Overall, the audio is more
than loud and crisp enough for hand-held
and mobile operations, and should be plenty
adequate for even the noisiest public ser-
vice applications.
The transmit audio was typically de-
scribed as “communications quality.” The
low frequencies in your voice are somewhat
attenuated. There is a two-level mike gain
control. The “HI” setting seemed to work
best for my voice level—but I know of a few
particularly enthusiastic operators on our lo-
cal repeater that could definitely benefit
from the “LOW” microphone gain setting.
If you look over the lab data presented
in Table 2 and compare these figures to the
numbers that we measured on the other one
band at a time dual-band H-Ts we’ve looked
at recently, you’ll find that the performance
of the DJ-V5T stacks up very well to the
competition.
Table 2
Alinco DJ-V5TH, serial number T000670
Manufacturer’s Specifications Measured in ARRL Lab
Frequency Coverage: Receive, 76-108 MHz (WFM), Receive and transmit, as specified.
144-148 MHz, 420-450 MHz; transmit, 144-148 MHz, 420-450 MHz.
Power requirements: 4.0-15.0 V dc; receive, 0.22 A; Receive, 0.21 A (maximum volume, no signal);
transmit, 1.6 A (maximum, high power). transmit, 1.4 A, tested at 13.8 V.
Receiver Receiver Dynamic Testing
Sensitivity: 12 dB SINAD, VHF, 0.16 µV; UHF, 0.18 µV; FM, 12 dB SINAD, VHF, 0.14 µV; UHF, 0.16 µV;
WFM, 1.0 µV. WFM, 100 MHz, 0.74 µV.
Two-tone, third-order IMD dynamic range: Not specified. 20 kHz offset from 146 MHz, 52 dB,
10 MHz offset from 146 MHz, 81 dB;
20 kHz offset from 440 MHz, 51 dB,
10 MHz offset from 440 MHz, 69 dB.
Two-tone, second-order IMD dynamic range: Not specified. VHF, 69 dB.
Adjacent-channel rejection: Not specified. 20 kHz offset from 146 MHz, 55 dB;
20 kHz offset from 440 MHz, 53 dB.
Spurious response: 60 dB. IF rejection, VHF, 96 dB; UHF, 143 dB;
image rejection, VHF, 97 dB; UHF, 60 dB.
Squelch sensitivity: Not specified. At threshold, VHF, 0.14 µV; UHF, 0.16 µV.
Audio output: 500 mW at 10% THD into 8 Ω. 633 mW at 10% THD into 8Ω.
Transmitter Transmitter Dynamic Testing
Power Output: (H / L1 / L2), 6 / 1 / 0.5 W. 146 MHz, 4.0 / 0.6 / 0.3 W; 440 MHz,
3.4 / 0.6 / 0.3 W with EBP-46N battery pack;
146 MHz, 5.5 / 1.1 / 0.4 W; 440 MHz,
5.6 / 1.1 / 0.5 W with 13.8 V dc.
Spurious signal and harmonic suppression: 60 dB. VHF, 65 dB; UHF, 60 dB. Meets FCC requirements.
Transmit-receive turnaround time (PTT release Squelch on, S9 signal, VHF, 172 ms; UHF, 168 ms.
to 50% of full audio output): Not specified.
Receive-transmit turnaround time (“tx delay”): Not specified. VHF, 450 ms; UHF, 540 ms.
Size (hwd): 3.8x2.3x1.6 inches; weight, 11.8 ounces.
It scores near the top of this class for
amateur band receive sensitivity. The VHF
two-tone third-order IMD dynamic range
at 10 MHz offset also came in at the high
end of the range. Couple this with decent
IF and image rejection numbers and a very
respectable adjacent channel rejection fig-
ure, and the DJ-V5T proves that it has what
it takes to live up to Alinco’s reputation for
radios that will perform well even in tough
RF environments.
The DJ-V5, with the snap on belt clip
attached, is nearly 2 inches deep. As with a
number of these clamshell-style radios, this
can make right-handed operation challeng-
ing. Even with my fairly large hands, it is a
bit of a stretch to hold the unit comfortably
in my right palm and still be able to reach
the
PTT button with the tip of my index or
middle finger. Left-handed use seems much
easier—my thumb naturally lands in the
proper position to operate the
PPT, MONI/
SQL and LAMP buttons, and even the
POWER, FUNC/LOCK and BAND/SET but-
tons on the left side of the front panel are
in easy left thumb range.
The volume control could use a bit
more drag in its action (or perhaps a slight
reduction in its diameter)—I often found
myself inadvertently changing the volume
setting while turning the rotary encoder.
With the level of audio this radio is capable
of, it can sure cause a scene when the
squelch breaks with the volume cranked
up all the way!
Imminent Improvements
Alinco recently began advertising an im-
proved version of this transceiver—and this
will be great news for the scanner buffs
among us. The new version will provide a
vastly expanded receive range right out of
the box (no surgery required)—an impres-
sive 76 to 999 MHz range (yes folks, the
cellular phone frequencies will be ex-
cluded)—and will also include the AM re-
ceive mode for those who enjoy aircraft
band listening.
Alinco is offering this new version in a
choice of two colors—either the traditional
black plastic enclosure or a new “see
through” shell. The plastic used in this one
has a slight blue tint to it.
It looks like Apple Computers and the
pager manufacturers may have started a bit
of a design trend here… Is the ham radio
market ready for such a stylin’ transceiver?
I guess we’ll just have to wait and see.
Manufacturer: USA Alinco Branch, 438
Amapola Ave, Suite 130, Torrance, CA
90501; 310-618-8616; fax 310-618-8758;
http://www.alinco.com.
Manufacturer’s suggested retail price:
$35
0
. Typical current street price: $28
0
.
Bid solicitations for Product Review
equipment appear on page 46.
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