EC4TR Luis
1.4K posts

EC4TR Luis
@EC4TR
Ham Radio operator since 1981. Mainly interested in 50, 70, 144, 432 Mhz, 1,2 & 2,3 Ghz, Satellites and SOTA's in HF
Pedrezuela (Madrid) Spain Katılım Şubat 2011
2.2K Takip Edilen1.5K Takipçiler

Probando mi nuevo dispositivo #Meshtastic, una red radio mallada de uso sin licencia, colaborativa y descentralizada, que no necesita Internet ni cobertura móvil para funcionar. El Sensecap T1000E, con una sorprendente sensibilidad en recepción para pesar poco más de 35 gramos y llevar la antena integrada. Será también útil en el próximo apagón 😉. #IoT #LoRa 📡


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@CarstenGrn1 It is true that MSHV is much less user-friendly than WSJT, at least for me.
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EC4TR Luis retweetledi

Spain’s global trade empire in 1650
By 1650, Spain was not simply an empire with overseas colonies. It was the center of a tightly controlled mercantilist system designed to pull wealth inward. This map shows how Spanish power depended less on raw territory and more on controlling trade routes, shipping lanes, and the movement of valuable goods across oceans.
At the heart of the system was American silver. Mines in Mexico and the Andes fed an imperial network that stretched across the Atlantic and, via the Manila galleons, across the Pacific. Silver moved through Spain but did not stop there. It flowed onward into global trade, especially toward Asian markets producing goods Europe could not supply itself.
The structure was deliberately restrictive. Trade was funneled through specific ports, colonial economies were shaped around extraction, and shipping was tightly regulated in an effort to maintain monopoly control. In reality, smuggling, piracy, and rival empires constantly undercut these ambitions, exposing the limits of imperial management.
This map captures the Spanish Empire near its mercantilist peak, when global reach and economic control briefly aligned. It also hints at the tensions within the system, where immense wealth moved through networks that Spain ultimately struggled to dominate.
Map source: Eric Ross, 2015. Mapping the mercantilist world economy. ericrossacademic.wordpress.com/2015/10/18/map…

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EC4TR Luis retweetledi

@CarstenGrn1 @MehdiHacks very good equipment, I have the "same" one at work but only until 2,4 ghz
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EC4TR Luis retweetledi

📢 Por Halloween sorteo 5 radios de Onda Corta #XHDATA ¡Sí, 5 radios chulisimas!
2 📻 D-608WB (radio de emergencia)
3 📻 D-219 (nuevos colores)
Si quieres participar tienes que hacer lo siguiente (solo hasta el 31/10/2025 a las 23:59h)
✅Sigue esta cuenta @RadioHacking
✅Haz RT de este tweet
¡Mucha suerte!
#halloween 🎃#shortwave 📻


Español

Giddyup 🤠 let’s Go Yellow Jackets 🐝 Sting ‘Em - Proud to be a Ramblin Wreck from Georgia Tech #middleagedgradstudent #YellowJackets

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EC4TR Luis retweetledi

CAS-4A/4Bは、とても使いやすい衛星でした。今までありがとうございました m(_ _)m
BG7QIW@BG7QIW
According to the latest data, two CAS satellites, CAS-4A/B (ZhuHai-1/2), have re-entered the atmosphere… Let's bid them farewell.
日本語
EC4TR Luis retweetledi

Pues 52 años del lanzamiento de "Tubular Bells" de #MikeOldfield y yo me acabo de enterar de esto... 🤣🤣
Español
EC4TR Luis retweetledi


@ok1cdj Ondra, did you know that the duplexer doesn't fit in the handle of the new one now?
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Nice.. Hope coming soon...
Ken Alexander VE3HLS🇨🇦🇹🇭@ve3hls
The latest batch of carbon fiber booms, ready to go!
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