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fondo de baliza/baliza con fondo L8

English translation: balise information/balise information frequency

01:30 Jan 25, 2019
Spanish to English translations [PRO]
Tech/Engineering - Transport / Transportation / Shipping / railway, ferrovia, relé, relay, parts
Spanish term or phrase: fondo de baliza/baliza con fondo L8
This is about the beacons that send signals to trains (Automatic Train Protection Systems) and their components, relays, etc.

I'm struggling badly with this one. Here's context:

"Las frecuencias de oscilación de las balizas que como se ha señalado anteriormente están comprendidas entre 50 KHz y 120 KHz, se denominan por L1, L2, L3…. etc. La información que proporciona una baliza con todos sus relés desexcitados, se denomina “fondo de baliza”. La frecuencia de fondo de cada baliza es, por tanto, la frecuencia de resonancia del circuito oscilante serie, formado por la bobina L1 y el condensador C1 que se encuentran conectados en circuito cerrado."

The terms I can't find anywhere:

"fondo de baliza"
"frecuencia de fondo"... de cada baliza

I know that "baliza" is beacon, but I can't find any source either in Spanish or English that shows me a "bottom beacon" or something. What is "fondo" in this situation?

A little more context, if it helps:

"Por último, se encuentra la baliza con fondo doble (fondo L1 convertible en fondo L7). En condiciones iniciales y cuando esta baliza está sin alimentación, la información que emite al paso del captador es la de la frecuencia L1 (amarillo) (60 Hz), que corresponde a la indicación de anuncio de parada (amarillo) de su señal asociada. Este tipo de balizas se utiliza en señales avanzadas que carecen de la indicación de Parada (rojo). Las restantes informaciones de esta baliza son las mismas que las de las anteriores. Modificando un poco el circuito, se puede convertir la baliza en tipo L7."

Thank you so, so much.
Ricardo Ramírez
Local time: 10:23
English translation:balise information/balise information frequency
see web ref.
Selected response from:

David Roe
Local time: 15:23
Grading comment
I went with "balise floor" in the end. thank you!
3 KudoZ points were awarded for this answer

Summary of answers provided
4balise information/balise information frequency
Posted via Mobile
David Roe

Discussion entries: 2



4 hrs   confidence: Answerer confidence 4/5Answerer confidence 4/5
balise information/balise information frequency

see web ref.

David Roe
Local time: 15:23
Native speaker of: Native in EnglishEnglish
PRO pts in category: 7
Grading comment
I went with "balise floor" in the end. thank you!

Peer comments on this answer (and responses from the answerer)
neutral  polyglot45: for Europe, the term "balise" is used rather than "beacon" or "transponder" but this may not be for Europe
8 hrs
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