FM Stereo/MW/SW PLL Receiver PL-230

Tecsun 德生通用电器制造有限公司 Tecsun General Electric Manufacturing Co., Ltd; Dongguan (Guangdong, SC)

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Country
People's Republic of China

Manufacturer / Brand
Tecsun 德生通用电器制造有限公司 Tecsun General Electric Manufacturing Co., Ltd; Dongguan (Guangdong, SC)

Year
2003 ?

Category
Broadcast Receiver - or past WW2 Tuner

Radiomuseum.org ID
339775

Picture
Schematics

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785041) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785042) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785043) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785044) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785045) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785088) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785089) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785090) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785091) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785092) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785093) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785094) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785095) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785096) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785097) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785098) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785099) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785100) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785101) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785102) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785103) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785104) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785105) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785106) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785107) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785108) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785109) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785110) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (3)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785033) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785036) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785034) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785035) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785037) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785038) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785039) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

FM Stereo/MW/SW PLL Receiver PL-230; Tecsun 德生通用电器... (ID = 2785040) Radio — Tecsun 德生通用电器... FM Stereo/MW/SW PLL Receiver PL-230 (1)

Click on the schematic thumbnail to request the schematic as a free document.

Technical Specifications

Number of Transistors
Semiconductors present.

Semiconductors
CXA1622 TA7358 SN74138 24C08 MM74C04 TA7358 CXA1622

Main principle
PLL, Phase-locked loop

Wave bands
Broadcast, more than 2 SW bands plus FM or UHF.

Power type and voltage
Batteries / addl. power jack / AA: 3 x 1.5 or AA Ni-MH: 3 x 1.2 / ? Volt

Loudspeaker
Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 5.7 cm = 2.2 inch

Material
Plastics (no bakelite or catalin)

from Radiomuseum.org
Model: FM Stereo/MW/SW PLL Receiver PL-230 - Tecsun 德生通用电器制造有限公...

Shape
Very small Portable or Pocket-Set (Handheld) < 8 inch.

Dimensions (WHD)
87 x 145 x 31 mm / 3.4 x 5.7 x 1.2 inch

Notes
The Tecsun PL-230 (Desheng PL230) FM Stereo/MW/SW PLL Receiver features 200 memory presets, DX/Local selector, external antenna jack, earphones jack, lock switch, sleep timer, alarm and clock. While frequency scan uses the keyboard, fine tuning uses a digital rotary knob.

It runs on 3 x AA sized batteries, either dry cells or rechargeable Ni-MH batteries that can be charged using a dedicated Tecsun DC-06A charger connected to the radio charger jack.

Frequency bands
- FM: 76 - 108 or 87 - 108 MHz selectable
  - Tuning steps: 100 kHz (Fine tuning: 50kHz)
- MW:
  - 522 - 1620 kHz
    - Tuning steps: 9 kHz (Fine tuning: 1 kHz)
  - 520 - 1720kHz
    - Tuning steps: 10 kHz (Fine tuning: 1 kHz)
- SW: 1711 – 29999 KHz
  - Tuning steps: 5 kHz (Fine tuning: 1 kHz)
The Grundig Yacht-Boy 550 is identical to the PL-230, but it does not charge batteries inside the radio (see details in the PL-230 schematic diagram).

Brief technical details

The PL-230 was designed around a Samsung S1A0903X02-Q0 AM/FM 1chip tuner with PLL integrated circuit. The FM band uses a TA7358 as front-end. The SW band uses a 3-superband active amplified pre-selector with one FET per superband. A CXA1622M IC handles the audio power amplification.

Net weight (2.2 lb = 1 kg)
0.230 kg / 0 lb 8.1 oz (0.507 lb)

Mentioned in
- - Manufacturers Literature

Author
Model page created by Jose Mesquita. See "Data change" for further contributors.

Other Models
Here you find 35 models, 34 with images and 21 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Tecsun 德生通用电器制造有限公司 Tecsun General Electric Manufacturing Co., Ltd; Dongguan (Guangdong, SC)

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The model FM Stereo/MW/SW PLL Receiver is part of the collections of the following members.

Jose Mesquita (P)

Forum

Forum contributions about this model: Tecsun 德生通用电器...: FM Stereo/MW/SW PLL Receiver PL-230

Threads: 1 | Posts: 1

I got this radio sold as working but with "poor sound".

I found out excessive current consumption, well above 100mA, even with the volume at minimum. The RF sensitivity was good on all bands.

Several electrolytic capacitors were found to have resistive leakage and the main offender had just 61 Ohm. Most of them had high ESR and the measured capaticance was well below the nominal value.

I decided to replace all of them as they were from either from one or another of the two chinese brands used in this production.

After having new caps installed, the current consumption reduced to normal levels around 30mA at minimum volume level. However, the sound distortion remained as before.

At first I suspected of a defective audio power IC due to the initial high current consumption, but after switching the 12 Ohm speaker with a 8 Ohm spare unit I had at hand, the sound quality improved drastically.

Pressing the speaker cone, I could hear a typical scratching noise when there is something abnormal in the magnetic coil-inductor assembly. As the speaker and cabinet were clean, with no signs of metal filings, I decided to dismantle the speaker only to find out that indeed the voice coil was rubbing against the armature at one of the sides.

How this happened is a mystery. There are no physical damage marks on the radio case or speaker, and the radio has never been opened before, judging by the foam stickers applied to the PCB.

I can only conclude that somehow, the armature magnet moved over time (unlikely), or it was a factory defect.

I decided to replace it with another Chinese speaker, but as the original uses 12 Ohm impedance (it is connected in bridged mode), replacing it with a common to find 8 Ohm unit would result in poor low end ressponse (the speaker is connected thru two 220uF caps). So initially I installed two 330uF caps to maintain the same low frequency ressponce using the 8 Ohm speaaker at hand. The bass response improved a bit, but as these are small speaaker units we can not expect a goos bass response.

Then I found a chinese supplier offering 16 Ohm speakers of the same size (57mm diameter, just 12mm weight). Installing this unit resulted in a more relaxed sound, with better bass response. I believe the 8 Ohm unit was overloading the audio IC due to the bridge mode setup.

Attachments

Tecsun PL-230 electrolytic caps values and location (267 KB)

Jose Mesquita, 14.Aug.22

Weitere Posts (1) zu diesem Thema.

FM Stereo/MW/SW PLL Receiver PL-230

Tecsun 德生通用电器制造有限公司 Tecsun General Electric Manufacturing Co., Ltd; Dongguan (Guangdong, SC)

Collections

Forum contributions about this model: Tecsun 德生通用电器...: FM Stereo/MW/SW PLL Receiver PL-230

tecsun: Tecsun PL-230: Restoring the sound quality