Description
5M-20M Feeder K-480WLA 500K-1GHz MW/SW/FM/AIR/UVHF Full Band Antenna 0-30DB Adjustable Gain SDR Loop Shortwave Antenna
Description:
-
This is a newly designed full band antenna with a wider operating
frequency of 500K-1GHz (supporting DTMB digital TV signal reception) and
continuously adjustable gain of 0-30DB. The carefully designed
multi-stage low-pass and bandpass filters provide the best selectivity,
and the built-in medium wave and frequency band stop filters can
selectively receive signals within the specified frequency band,
suppressing signals outside the receiving band for better reception
effect, and all amplifiers are imported ultra-high frequency devices
with better specifications.
- K-480WLA is an active ring
broadband receiving full band antenna (with a built-in six band
high-performance low-pass, bandpass filter, and MW FM frequency band
stop filter), and also the first active antenna with a built-in filter,
which can selectively receive signals within a specified frequency band
to suppress out of band interference, make the reception effect clearer;
providing seven reception modes: full band, MW (medium wave), SW (short
wave), FM (frequency modulation), AIR (aviation band), 6m (amateur
band), UV (UHF-VHF band), with a built-in 7.4V lithium battery and
integrated charging management chip.
- The TYPE-C charging port is compatible with the 5V charging head and charging cable, making it very convenient to use.
-
Adopting ultra-high frequency low noise amplification devices (with a
maximum operating frequency of 1GHz and support for DTMB digital TV
signal reception), the ultra-wide operating frequency of 0.5-500MHz has
good gain flatness within the operating bandwidth, providing
approximately 0-30DB gain (continuously adjustable gain).
- The reception frequency covers the medium wave, short wave, FM broadcasting bands, and UHF-VHF aviation bands.
-
It is simple to install with the small ring diameter of 68CM, and can
be installed outdoors, on balconies, terraces, and rooftops. It is
suitable for broadcasting enthusiasts and amateur radio enthusiasts with
limited space to install.
- All screws of the antenna are made
of 304 stainless steel material, and the front passive matching box is a
customized black fully waterproof structure for outdoor use in wind,
sun, rain, and long-term installation.
- Suitable models include
the S series S2000 S8800 for Tecsun, PL series PL-330 PL-365 PL-660
PL-880 PL-990, 909X 909X2 for SANGEAN, R71E for ICOM, FRG-8800 for
YAESU, etc., which are suitable for use in shortwave receivers and
radios with external antenna ports in all corresponding bands,
especially for SDR receivers. This antenna is a receiving antenna and
cannot be used for transmission.
Precaution:
-
The antenna is equipped with a SMA male to male adapter, an SMA to 3.5
plug adapter, and an S2000 BNC adapter. This means that it can be used
with SMA female, TV male, F female, BNC female, and 3.5 jack, without
the need to purchase other accessories. Receivers and radios with other
interfaces need to be equipped with corresponding adapters (a small
bottle of PVC adhesive need be prepared when installing the antenna,
which is not included in the packaging list.)
- The K-480WLA uses a
50 ohm customized version of the K-180 ultra-low loss feeder with a
diameter of approximately 3.5mm, which has the same performance as the
standard American 302 feeder.
- For Tecsun PL series PL-600, PL-660,
PL-880, 990 and SANGEAN 909X2 radios, please use the SMA male to 3.5mm
jack adapter cable and SMA male to male adapter cable (1m).
- The
K-480WLA is a completely new design and has a completely different
circuit and working principle from K-180WLA and K-30WLA. Except for the
feeder and adapter lines that can be used interchangeably, everything
else cannot be used interchangeably (never connect the feed boxes of
K-180WLA and K-30WLA to the front matching box of K-480WLA), nor can the
front amplifier boxes of K-180WLA and K-30WLA be connected to the main
control box of K-480WLA. This connection cannot work properly and may
damage components.
Specification:
- Model: K-480WLA
- Charging voltage: DC-5V (2.5A max)
- Charging port type: Type-C
- Input and output impedance: 50ohm
- Gain adjustable range: 0 - 30dB
- Receiving frequency range: 0.5MHz - 500MHz
- Working mode: all band/MW/SW/FM/AIR/6m/UV
- Working mode receiving frequency range:
All band: 0.5 - 500MHz
MW: 0.5 - 2MHz
SW: 2 - 30MHz
FM: 70 - 108MHz
AIR: 118 - 170MHz
6 meter: 30 - 60MHz
UV (UHF VHF): 136 - 500MHz
- Built-in MW FM Band-stop filter
- Built-in LPF BPF multi-band filter
Package Included:
- 1 x Set of Antenna
Note:
- This antenna cannot be used for transmission. And the input port of the antenna can only be connected to mini loop antenna.
FAQ:
Q: Can K-480WLA be installed indoors?
A:
The design of the K-480WLA itself is the outdoor antenna, whose front
matching box is a customized version of black outdoor dedicated fully
waterproof structure that can be installed and used outdoors for a long
time without fear of wind, sun, rain, and rain. It can be installed and
used outdoors, but it can also be used indoors. However, due to the
obstruction of buildings and various indoor interference, this is the
reason for poor indoor reception. So if conditions permit, try to
install it outdoors as much as possible. Even if there are no
conditions, it should be close to the window or extend out. Circular
antennas belong to magnetic field type antennas, which are not sensitive
to electric field interference. This is its advantage and it has strong
receiving directionality. Compared to electric field type antennas such
as long wire antennas, circular antennas have lower bottom noise and
have a good suppression effect on electric field interference. This is
the fundamental difference between electric field type antennas and
magnetic field type antennas. Moreover, the K-480WLA is equipped with a
built-in six band bandpass low-pass filter and a medium wave and
frequency band band-stop filter, which can selectively receive
out-of-band signals in designated frequency bands, improving reception
performance. The built-in ultra-high frequency amplifier ensures that
the medium wave/short wave/FM/aviation band and UHF-VHF also have a
maximum gain of 30DB (0-30DB gain is continuously adjustable).
Q: Can K-480WLA be used in MW/SW/FM bands?
A:
The K-480WLA built-in amplifier uses a high-frequency RF amplification
device with a working frequency of 0.5-500MHz, a maximum gain of 30DB,
and a maximum working frequency of 1GHz, fully covering the medium and
short wave, frequency modulation, aviation, and UHF bands.
Q: Which radios can be used?
A:
As long as there is a radio with a corresponding band external low
impedance antenna port, it can be used (50-75 ohms is the best), and
which bands can be used is determined by which bands your radio's
external antenna port supports.
Q: Can I receive certain channels?
A:
We can only guarantee the quality and specifications of the antenna,
but we cannot guarantee that it will definitely receive certain stations
you want to receive. Especially for short waves, the propagation
characteristics of ionospheric reflection vary at different times,
seasons, and frequencies.
Q: What is the difference between K-480WLA, K-180WLA, and K-30WLA?
A:
The K-480WLA is a brand new design concept and is completely different
from the previous two ring antennas in terms of design circuits (except
for the common feeder and adapter lines). The K-480WLA has a higher
operating frequency, higher gain, and the ability to selectively receive
signals within a specified band to suppress out of band signals, which
can adapt to more complex electromagnetic environments (this is a unique
feature of K-480WLA among all active antennas). K-480WLA can be
understood as the super upgraded version of K-180WLA, which solves the
functions and indicators that K-180WLA cannot achieve. That is, if it is
a complex electromagnetic environment, K-480WLA is a better choice.
Q: Are the antennas tested before shipment?
A:
Yes. All component assemblies, including accessories, need to be
strictly tested before shipment. We have advanced and professional
instruments to test its gain and coefficient indicators. Before
shipment, we are 100% sure that all normal indicators are qualified.
Q: How about receiving amateur radio signals?
A:
The transmission power of amateur radio stations is relatively small
and cannot be compared to the tens of kilowatts level of broadcasting
stations. Both are relatively weak signals, so in order to have good
reception effects, the antenna must be installed outdoors, with no
obstruction in the receiving direction.
Answer on reception
effect: The reception effect of the antenna is related to the antenna
installation position and electromagnetic environment. The function of
the antenna is to improve reception quality and signal-to-noise ratio.
At the same location, it can only improve signal-to-noise ratio on the
basis of the original signal. Only by installing the antenna outdoors or
on the roof of the building can the previously inaudible signal be
heard and the weak signal become a strong signal, the original strong
signal become an ultra strong signal, so the antenna must be installed
outdoors if conditions permit. Without conditions, the antenna must also
be close to or extend out of the window. And we can only guarantee the
quality and specifications of the antenna, but cannot guarantee that you
will receive the signal you want.
Description for antenna
installation and lightning protection: The antenna does not have
lightning protection function, and the antenna design has certain
anti-static and induction lightning capabilities. The antenna must be
installed under the protection of a lightning grounding network, and
there is a lightning grounding network on the top of high-rise
buildings. The antenna must be installed under the protection of the
lightning grounding network's sector, and must not exceed the height of
the lightning grounding network and the building. Specific lightning
protection issues can be consulted with qualified relevant institutions
and units.
Q: Whether the walkie talkie can be connected
A:
The main frequency bands of the walkie talkie are VHF and UHF, and the
K-480WLA amplifier has a gain of 30DB. The walkie talkie is very prone
to overload for strong signals, and the performance after overload is
that it can't hear anything or the signal-to-noise ratio decreases.
Therefore, the K-480WLA is not suitable for connecting to the walkie
talkie, especially in the FM band strong signal area, it will be
overloaded at 100%, and accidental transmission will damage the antenna
at 100%. So active antennas are not suitable for connecting to walkie
talkies, and are suitable for receiving dynamic SDR receivers and
professional receivers and radios.
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Shipping Terms
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2.
For remote regions of DHL/FedEx..., extra shipping costs might be
charged. Usually it costs about 30USD-50USD. We will contact you if
shipping company informed us your address belongs to remote area. Thanks
for your understanding.
Return Terms
If
you receive the item that not satisfied or defective, please do not
open case and kindly notify us within 30 days. We will guide you the
returning process for replacement or refund.
Custom Duties & Taxes
1.
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not charge any taxes and fees, and the possible taxes and fees will be
collected by the platform or by third parties such as customs and
carriers.
2. Please check with your country's customs office and inform us what/how much should declare before shipping.
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