Tecsun PL 880 Menu Oculto

Some Recommended Initial Settings:  Due to different  firmware versions not all will work on every PL-880 so try them out and see for yourself.

Muting Threshold – Power On –  Press & Hold The 9 Key – Dial it down to 00 . Press 9 again to set. You must do this for AM, SW, and SSB modes.

Toggle Seconds Display On/Off – Power Off – Press & Hold 8 key.

Digital Noise Reduction – Power On Press 6 Key – set it to Off.

FM De-emphasis – Power On . Press 5 – Set to 75 uS USA or 50 uS Europe

Low Battery Limit Adjustment – Power Off Press 4 Key 3.4 – 3.7

To display all LCD elements, Power Off Press – AM-BW button

A second press displays the firmware version

A Third Press shows the firmware date
There are several more arcane adjustments that I won’t go into here and some of which did not work on my radio but suffice it to say that the PL-880 offers lots of room for personalization. Again, an unusually exhaustive discussion of all the settings is available at the Yahoo PL-880 Group:

Credits to RadiojaYallen

SINPO: Que significa, y como catalogan los niveles

Code explained

S (Signal strength) 

The relative strength of the transmission.

I (Interference) 

Interference from other stations on the same or adjacent frequencies (man-made noise).

N (Noise) 

The amount of atmospheric noise.

P (Propagation) 

Whether the signal is steady or fades from time to time.

O (Overall merit) 

An overall score for the listening experience under these conditions.

Each category is rated from 1 to 5 with 1 being 'unusable' or 'severe' and 5 being 'perfect' or 'nil'. MANY raters misunderstand the code and will rate everything either 55555 or 11111 when in reality both extremes are unusual in the extreme. '55555' essentially means 'perfect reception akin to a local station' while that is occasionally possible, when talking about long-distance short-wave reception, it is almost never the case.

Another common mistake in rating is presenting an 'O' higher than any previously rated element. By definition, a station cannot present 'perfect' reception if there is any Noise or Interference or Fading present. In other words, it is NOT 'perfect local quality' reception if any of those things are present.

S	I	N	P	O
Signal	Interference	Noise	Propagation conditions	Overall merit
5-Excellent	5-None	5-None	5-Excellent	5-Excellent
4-Good	4-Slight	4-Slight	4-Slight disturbance	4-Good
3-Fair	3-Moderate	3-Moderate	3-Moderately disturbed	3-Fair
2-Poor	2-Severe	2-Severe	2-Severe disturbance	2-Poor
1-Barely Audible	1-Extremely strong	1-Extremely strong	1-Very poor propagation	1-Useless