I hope this lightweight radio will help you enjoy broadcasting and bring you joy.
Brief introduction of PL-360 features:
● This machine uses the si4734 digital signal processing (DSP) chip of SILICON LABS in the United States to digitally convert analog FM/AM broadcast signals, and use modern software radio principles to process and demodulate them, which greatly improves listening sensitivity, Selectivity, signal-to-noise ratio and anti-interference ability
● Can receive FM stereo, medium wave (expandable to long wave), Shortwave (2.3~21.95MHz) radio program, with many practical functions, easy operation, special power saving
● FM receiving frequency range can be set to receive 76~108MHz (Japanese standard), 87~108MHz or 87.5~108 MHz (European and American standard)
● Equipped with a medium wave external antenna socket, with the supplied medium wave external antenna, it can greatly improve the receiving sensitivity of medium wave/long wave band
● It is equipped with a very practical multi-function digital adjustment knob, which can be used to set the time, adjust the frequency, and select the address
● There are five ways to select channels: convenient tuning (ETM), manual search of radio frequency (VF), manual search of pre-stored radio stations (VM), automatic search and browse of radio frequencies, automatic search and browse of stored stations, among which ETM is Desheng The original closing method to improve the closing efficiency
● It can store up to 450 radio frequencies manually, semi-automatically and fully-automatically (ATS), among which 100 for FM/medium and long wave, and 250 for short wave
● Multi-function display: it can display the working status of radio frequency, electric field intensity, signal-to-noise ratio, temperature, battery capacity, etc.
● A special high-sensitivity membrane speaker is used, with beautiful sound, and FM stereo broadcasting can be heard with headphones
● Equipped with broadcast timer boot function, you can boot to listen to the preset radio program at a scheduled time, and also set to automatically stop the alarm function within 1~90 minutes
● Highly intelligent power switch function: you can set to automatically shut down after 1~120 minutes after starting up, or you can cancel the automatic shutdown function
● Use 3 R6 (No. 5) batteries for power supply, and also can choose Ni-MH batteries, and have smart charging function (USB socket)
● Comes with an exquisite protective cover, medium-wave external high-sensitivity antenna and stereo headphones
**Term explanation: ETM——Easy Tuning Mode convenient tuning method
ETM convenient tuning method——Using the ingenious combination of the receiving circuit of the radio and the control program, the frequency of the suspected radio station is selected in advance to improve the efficiency of tuning and receiving. With ETM radio, you can easily tune out your favorite radio station from the preferred frequency
PL-360 basic technical indicators
● Frequency range/tuning step
—— FM(FM)
76 — 108 MHz; Smart step 0.01/0.1 MHz
Optional frequency coverage:
Standard: 87 — 108 MHz(Applicable to other countries'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''' standards except Japan, Germany, and Russia)
Germany: 87.5 — 108 MHz
Japan: 76 — 108 MHz(Including some campus radio and domestic 4 — 5 channel TV sound)
—— shortwave(SW)
2300 — 21950 kHz; Smart step 1/5 kHz
—— Medium Wave(MW)
522 — 1620 kHz; Smart step 1/9 kHz(Suitable for Asia, Africa and Europe)
520 — 1710 kHz; Smart step 1/10 kHz(Suitable for North America)
150 — 1620 kHz;(Covered long wave)Smart step 1/9 kHz
● Noise limit sensitivity:
FM(FM) (S/N=30dB) Better than 3 uV
Mid-wave(MW) (S/N=26dB) Better than 2 mV/m built-in antenna
Mid-wave(MW) (S/N=26dB) Better than 1 mV/m external antenna
Long wave(LW) (S/N=26dB) Better than 12 mV/m built-in antenna
Long wave(LW) (S/N=26dB) Better than 4 mV/m external antenna
shortwave(SW) (S/N=26dB) Better than 30 uV
● Optional:
FM(FM) >60 dB
Mid-wave(MW)>60 dB
Long wave(LW)>60 dB
shortwave(SW)>60 dB
● FM stereo separation: better than 25 dB
● Output power:
Speaker: 350 mW
Earphone: 10 mW / 8-32Ω stereo earphone
● Number of storage memories: 450 in total
FM(FM) 100
Medium and long waves(MW) 100
shortwave(SW) 250 pcs
● Wake-up mode: radio station alarm
● Quiescent current:
FM(FM)<25mA
Medium Wave/Long Wave(MW/LW)<23mA
shortwave(SW)<27mA
Shutdown standby <90uA
● Speaker specification: diameter 40mm/16Ω membrane speaker
● Power supply mode:
Battery powered: 3 R6(Number five)Dry battery or rechargeable battery
External power socket: USB specification/DC 5V 300mA
● Weight: about 128g (without battery)
● Actual size: width 53× height 159× thickness 26(Mm)
● Appearance patent number: 200830217914.9
● Random accessories:
Stereo headset, protective cover, medium and long wave external antenna, instruction manual, certificate, after-sales service guarantee
PL-360 ETM function introduction:
ETM: Easy Tuning Mode
ETM tuning method————Using the radio receiving circuit and MCU control software, the frequency points without radio programs are excluded in advance, and the frequency points of suspected radio stations are selected, so that users can easily Find out which radio station you want to listen to.
As we all know, the frequency range of civil radio broadcasting and the frequency interval of broadcasting stations are usually:
Frequency modulation: frequency range 87 — 108 MHz frequency interval 0.1 MHz
Medium wave: frequency range 522 — 1620 kHz frequency interval 9 kHz
Shortwave: frequency range 1700 — 30000 kHz frequency interval 5 kHz
Theoretically, the number of frequencies allowed for radio stations in each band is:
FM 87 — 108 MHz The radio frequency points that can be accommodated are(108-87)÷0.1 = 210
AM 522 — 1620 kHz can accommodate the radio frequency points of(1620-522)÷9 = 122
Shortwave 1700 — 30000 kHz can accommodate the radio frequency point is(30000-1700)÷5 = 5660
【The frequency of PL-360''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s shortwave reception is(21950 —2300)÷5 = 3930】
Digital tuning radios are designed to receive range and frequency step interval in accordance with the above regulations. Searching for radio stations with a digital tuning radio, from the low end to the high end of the frequency, 210 frequency points are searched for FM, 122 frequency points are searched for medium wave, and thousands of frequency points are searched for short wave.
But in fact, for many reasons, such as preventing adjacent frequency interference, not every frequency has a radio broadcast. For example, if you listen to FM radio in different places, you will receive at least a few radio stations, and as many as 60 — 70 radio stations. For example, due to signal transmission in medium wave, the distribution of the number of radio stations is characterized by less during the day and more at night, and only a few — dozens of radio stations can be received.
Take PL-360''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''s shortwave reception as an example:
Short-wave band has(21950-2300)÷5 = 3930 frequency points, and the actual radio programs that can be listened to are dozens in the daytime and hundreds in the evening, and the frequency distribution of radio stations in the morning, midnight and evening is almost different. Assuming that the radio can receive only 200 radio programs, then in order to search for these 200 radio stations, you have to search nearly 4000 frequency points, so it takes a long time to search.
In response to the above-mentioned problems, Tecsun has developed an ETM tuning method, which uses the receiver circuit of the radio and MCU control software to pre-exclude the frequency points without radio programs, and select the frequency points of suspected radio stations.(Such as programs in different countries and languages, as well as interference signals from the local electromagnetic environment). That is to say, with the ETM tuning method, dozens of ——several hundreds of suspected frequencies can be selected from thousands of frequency points, and the user can easily select them from these in the subsequent closing operations. Among the suspected frequencies, find out the radio station program you want to listen to.
Use ETM convenient tuning method to listen to the radio, the frequency points that users want to search can be reduced to:
FM a few — dozens, day and night are basically the same
Medium wave several — dozens less during the day and more at night
Shortwave dozens — hundreds of frequency points Fewer days during the day, less late at night, and more in the evening, and in different time periods, radio stations are distributed in different frequency ranges.
Operation method of ETM function:
To use the ETM function for the first time, you must first press and hold the ETM button to search for the full frequency of the band you are in, and select the frequency of the suspected radio station. After the optimization, you can use the tuning knob to operate the tuning.
Special note: The number and frequency distribution of suspected radio stations are different at different times, in different locations, and in different bands, especially in the short band.
Use the ETM method to listen to the radio in the same place:
FM band: Just do ETM optimization once during the day, and don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t do ETM optimization every time in the future. But if you change the listening location, I suggest you do ETM again.
Medium wave band: You can do an ETM optimization at night when there are more radio stations. But if you change the listening location, it is recommended to do ETM again.
Shortwave band: The ETM method is the most convenient and practical to listen to shortwave broadcasting. To listen to shortwave broadcasts in ETM mode at different times, it is recommended to perform ETM optimization first.
In order to avoid searching for too many clutter interference signals, it is recommended that you go to the balcony or outdoor open area for ETM optimization.
With the ETM tuning method, you will feel that listening to the radio can be so easy and fast.
Q&A:
Q: What is the difference between ETM and ATS?
A: ETM and ATS are basically the same in the principle of search/storage frequency.
The signal strength threshold of the radio station during ATS search is set to be relatively high, in order to minimize the locking of non-radio frequencies, and radio frequencies that are too weak and worthless to listen to. The searched frequency memory is automatically stored in the editable memory, and you can delete and increase the radio frequency at will afterwards. After sorting the stored radio frequencies, you can easily call out the radio frequencies you want to listen to from the memory. Because of this, I believe you will not be willing to perform ATS operations at will and overwrite the radio frequencies that you have worked so hard to edit and organize.
ETM is a convenient tuning method based on frequency tuning. It has a lower threshold for search and lock. It aims to exclude frequencies that are definitely not radio or even noise. This mode can lock on weaker suspected radio signals and finish ETM Listening to the radio after optimizing the frequency can not only save your operating time, but also increase the life of the tuning knob. Just because the convenient ETM tuning method does not provide editing functions, you can perform ETM operations at any time without hesitation. Search for suspected radio frequency.
One tip: In a better listening environment, the number of radio frequencies searched by ETM and ATS may be the same, especially on the FM band. Anyway, you won’t lose anything with ETM. PL-360 has both ATS and ETM functions. You can compare it.