Tecsun PL450 and PL600 Radio Radio Reviews


Sample/Wholesale
Price
Shipping
Carrier
Buy it Now
pcs sample
USD
/pcs
USD

pcs
USD
/pcs
USD


Received before the Spring Festival Tecsun the two radios, PL450 and PL600. Both the number of the machine are adjusted, AM / FM wide-band radio frequency twice, in appearance, apart from one small, but seem similar, the main function PL600 PL450 more than the single-sideband receiver (SSB). PL600 and PL550 size and appearance is very similar, but in fact are very different line, PL550 is a conversion of AM.

PL-450 PL-600

I probably play the radio: listen to – split about – listen to it.

Listen to, are good, PL600 some rich sound, speakers may be larger, more suitable for listening to FM music stations; PL450 Although the speaker a little small, but the sound is distinctive, especially clear, for listening to shortwave radio. Comparison of the two machines listening for some time, slowly, I feel more like the PL450, this machine may be small, easy to carry, while PL450 more power.

Tecsun PL-450 3

Of course, PL600 I still like, PL600 PL450 power than, less suitable for the battery to listen to, therefore, generally online or write in my site, connect the power adapter, the computer next to the hearing. She listens to, that put the radio about 20 cm away from the computer, it basically will not be interfered with by computer, and I get other radio contrast, PL600 and PL450 feeling is the best anti-interference.

Tecsun PL-600 11

….Heard, followed by demolition, dismantling it.

The first demolition of PL450, PL450 is the back cover open, remove the rear cover, see the back of the circuit board, and many chip resistors, capacitors, transistors and integrated circuits welded on top ..

1

Look PL450 radio side, the original “stereo (broadband) / mono (narrow)” switch so the drive (the yellow circle )……

1

Remove the PL450 movement and radio panel, see the front display and circuit board, operational control and radio reception for the two separate circuit boards, panels and board ……

1

PL450 board:

1

PL450 panel: (To prevent the control panel of the CPU clock signal interference with the main receiver board, control panel on the back of a large area welding shield.)

1

Tecsun PL-600 4

PL600 is the front panel open, open panel circuit board will see the display and the front …

1

PL600线路板也是分为主要的两部分:控制板和接收主板,拆下连接排线,拆开两块板…

1

PL600 board:

1

PL600 and PL450 on the main board circuit layout roughly the same:

1

 

PL450 and PL600 are the first high-frequency double-conversion radio, the first inverter are balanced mixer, but some details on two different radios:
1, PL600 first IF is 55.391MHz, and PL450 first intermediate frequency is 55.845MHz;
2, PL600 with a single-sideband amplitude demodulation circuit;
3, PL600 second intermediate frequency processing, detector / frequency of different chips and PL450, PL600 use TA2057NG, and PL450 use TA8132AN.

1 2

Split-off, and then listen to it …
PL600 and PL450 FM two machines have a high sensitivity, high performance handling are excellent TA7358AP. AM shortwave sensitivity is also high, but PL600/PL450 noise than a feeling of PHILIPS D1875 radio frequency slightly larger, which may be PL600/PL450 active gain relatively large because of it! ? In-band and L-band interference here because I am serious, not how to listen, but sometimes late at night listening to see, the sensitivity is high.

As for the other is not to say, the best want to say is: Tecsun these two machines was too late to point out, as early as three or four years, PL550 launch times like it! Of course, this is a personal one-sided view.


Sample/Wholesale
Price
Shipping
Carrier
Buy it Now
pcs sample
USD
/pcs
USD

pcs
USD
/pcs
USD


Submit your review
1
2
3
4
5
Submit
     
Cancel

Create your own review

Average rating:  
 0 reviews
This entry was posted in News and tagged , , . Bookmark the permalink.

Leave a Reply

Your email address will not be published. Required fields are marked *