11 octombrie 2024

List of Satellite Frequencies by Band

 

 https://usradioguy.com/satellite-frequencies/

 

Details for a specific satellite can be found at the end of the frequency descriptions.

Downloadable Satellite Frequencies for Meteorological and Earth Observation Satellites, Updated 03-01-2023

List of Satellite Frequencies by Band

VHF Band

  • 136 – 138 MHz:  This band was used heavily by many different types of satellites in the past. Today (2023), most activity is restricted to 137-138 MHz (which is the current allocation) and consists of meteorological satellites transmitting data and low-resolution images, together with low data rate mobile satellite downlinks (eg Orbcomm)
  • 144 – 146 MHz:  One of the most popular bands for amateur satellite activity. Most of the links are found in the upper half of the band (145 – 146 MHz).
  • 148 – 150 MHz:  This tends to be used for uplinks of the satellites that downlink in the 137 – 138 MHz band.
  • 149.95 – 150.05 MHz:  This is used by satellites providing positioning, time and frequency services, by ionospheric research and other satellites. Before the advent of GPS it was home to large constellations of US and Russian satellites that provided positioning information (mainly to marine vessels) by use of the Doppler effect). Many satellites transmitting on this band also transmit a signal on 400 MHz.
  • 240 – 270 MHz:  Military satellites, communications. This band lies in the wider frequency allocation (225 – 380 MHz) assigned for military aviation.

15 martie 2024

frecventmetru rusesc

 o super scula, zdarovaia :)))

poze si o filmare mai jos:

 
 

inlocuire acumulator casti bluetoth

 aveam niste casti luate la sa zicem "5lei" din Jumbo. au mers cat au mers, la modul ca "de noi" nu prea aveau autonomie, adica ascultai sa zicem "jumate de caseta", pe o parte si apoi murea acumulatorul ca in vremurile cand aveai o pocnitoare de walkmen si manca bateriile 777 ca pe nimica, aproape pe o parte a casetei.

 

casti mini air pro

 Știu că erai curios, "ce o fi in căscuțele" astea de le pierd hipsterii pe stradă precum Jack fasolea din frej... 😂 Iată acum ai ocazia sa vezi asa ceva disecat. Ideea e ca am descoperit in ele si un cip 5G care "copiază" pe dischetele ocultelor, gândurile "bagaboante" 😁😁

castile in sine se aud foarte bine, chiar am ramas surprins la cat de mici sunt, ce bine se aud..

mai jos puteti uita poze:   

08 martie 2024

recomandare casti muzica Trust GXT 383 Dion

 Nu sunt eu neaparat in masura sa recomand cuiva, ceva. Exista posibilitatea ca eu sa fiu subiectiv, si ce mie imi place, altcuiva, s-ar putea sa nu ii placa. Dar consider ca pe "felia mea" cu ascultat muzica, plus ca de ceva timp de cand ma ocup chiar si cu realizarea unor incinte audio, as putea face anumite recomandari. Si da, cred ca am destula experienta in domeniul audio, la modul ca am facut destul de multe reparatii si am vazut si ascultat tot felul de incinte audio, si casti. 

 

30 ianuarie 2024

despre plumb radiatii si sanatate

 


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