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Author Topic: Radio Encicliopedia  (Read 3790 times)
NO2A
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« on: August 04, 2017, 05:09:28 PM »

Radio Encicliopedia broadcasts on 530 AM from Havana. I've even heard them during the day. Does anyone know the frequency limits for AM broadcast, and the power limits for Cuba? They play very soft easy listening music, often piano classics.
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KJ6ZOL
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« Reply #1 on: August 04, 2017, 06:21:21 PM »

530 khz probably can be tuned in by many radios in Cuba, especially old Soviet transistor radios from the 70s and 80s that were likely imported into the country. The Soviet radios were marked in meters, not kilohertz like in the US, and thus tuned "backwards" from 1610 to 530 because rendered in meters the dial would appear to be tuning from the smaller freq to the larger. I actually have a Soviet transistor LW/MW radio made in 1986; I can dig it out tomorrow and let you know what freqs in meters it tunes.
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NA4IT
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« Reply #2 on: August 05, 2017, 03:33:10 AM »

A search for Cuba's broadcasting regulations turns up nothing. There are lots of sites of regulations of what cannot be broadcast to Cuba. They do have "state controlled" media. I guess one would have to search for the Office of Cuba Misinformation to find anything...
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K0OD
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« Reply #3 on: August 05, 2017, 06:37:34 AM »

What is the current status of US Travelers Alert stations on 530 KHz? The one near my home was still broadcasting the last I checked but the message was way out of date.

Is that Cuban station a MW broadcaster low in that band or a LW broadcaster high up? Smiley I believe some Cuban stations have run 500 KW. Whatever. The Cuban government is surely aware of it. It's been on the air for years and has been discussed here before especially in regard to the NDB that was on 529 kHZ a few years ago from Tennessee.

Always fun to pick up odd things on the car radio.   
« Last Edit: August 05, 2017, 06:49:16 AM by K0OD » Logged
KAPT4560
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« Reply #4 on: August 05, 2017, 08:14:53 AM »

  I live near the Canadian border and there is an ethnic station on 530. We have NWS and travelers advisory stations on 910 and 1610 locally.
 There are some interesting (low power) utilities that are on the AM broadcast band:
 http://www.eham.net/ehamforum/smf/index.php?topic=82862.0
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NO2A
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« Reply #5 on: August 05, 2017, 04:28:19 PM »

I too have not been able to get any information on their broadcast allocations or power limits. According to Wikipedia Radio Reloj runs 50kw,and they put a good signal up here. I'm too far from the nearest interstate to hear anything on 530,but the next time I travel I-10 I'll check that out. I can hear WASG 540, a religious station in Daphne, AL,near Mobile. When I looked them up I was surprised to see they only run 19 watts at night! QRP! They had a good signal too.Of course it helps to be on the lower portion of AM where there's not as much competition from other stations.
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RENTON481
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« Reply #6 on: August 07, 2017, 05:38:47 PM »

I've read on another radio hobby internet forum that Radio Enciclopedia broadcasts on 530 khz using 10KW.

I don't have answers for the rest of the OP's questions, but as far as I know, Cuba adheres to the standard Western Hemisphere MW band, and they have numerous stations, covering nearly every MW frequency from 530-1600 to keep broadcasts from the US from filtering in much.
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KJ6ZOL
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« Reply #7 on: August 07, 2017, 08:08:39 PM »

I've read on another radio hobby internet forum that Radio Enciclopedia broadcasts on 530 khz using 10KW.

I don't have answers for the rest of the OP's questions, but as far as I know, Cuba adheres to the standard Western Hemisphere MW band, and they have numerous stations, covering nearly every MW frequency from 530-1600 to keep broadcasts from the US from filtering in much.

The Soviet transistor radios aren't as selective as the ones sold in America in the 60s and 70s, for the same reason-the Russians didn't want people in the Soviet occupied territories in Eastern Europe listening in on Western MW broadcasts. I'm not sure what the circuits were, likely a three or four transistor regenerative design. I know that most of the radios sold in Nazi Germany in the 30s were three tube regens, especially the common Volksempfangers. Regens are less sensitive than superhets, making regen designs popular in totalitarian states. Couple that fact with the Cubans putting blowtorch MW stns all over the band, and it is doubtful that Cubans hear any US MW.

During the prerevolutionary period, a lot of West German radios were apparently sold in Cuba, then of course after the revolution people hacked them up trying to get as much life out of them as possible. I have read one rumor on an antique radio forum that a lot of Cubans tried all sorts of crazy stuff to get the German sets to run, then simply stashed them in basements and forgot about them. Apparently there's a small group of aficionados in Cuba today that are trying to salvage prerevolution sets, and most of what they find is in such awful shape that they're forced to triage, selecting what can be reasonably fixed and what is parts only.

Probably by the time that the USSR developed its own transistor radio manufacturing in the early 1970s, places like Cuba and parts of Eastern Europe where lots of tube sets survived were approaching the ultimate end of life for most tube sets, forcing purchase of transistor sets.
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RENTON481
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« Reply #8 on: August 07, 2017, 10:00:48 PM »

Interesting observations. I wasn't aware that Soviet transistor sets were poor performers... I have read descriptions of some which were apparently decent performers... but the idea of keeping them low sensitivity / wide selectivity makes sense, as the Soviet dominated regimes didn't want much info drifting in from over the Iron Curtain.

Makes sense about Cuba and MW. I'm sure most Cubans with newer sets probably listen to Cuban FM anyway, and from what I understand, virtually no US FM reaches there.
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NO2A
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« Reply #9 on: August 07, 2017, 11:16:36 PM »

Now and then I'll see Russian radios for sale on ebay. I was curious about their performance, so that answers that. It would appear that on AM Cuban stations  run about the same power levels as we do.  If you're broadcasting on 530,and using 10 khz bandwidth, then your signal would extend down to 525. That's why I was curious about their regulations for the lower part of AM. I guess it's a mystery! Appreciate the info.
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KJ6ZOL
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« Reply #10 on: August 08, 2017, 09:21:59 AM »

Interesting observations. I wasn't aware that Soviet transistor sets were poor performers... I have read descriptions of some which were apparently decent performers... but the idea of keeping them low sensitivity / wide selectivity makes sense, as the Soviet dominated regimes didn't want much info drifting in from over the Iron Curtain.

Makes sense about Cuba and MW. I'm sure most Cubans with newer sets probably listen to Cuban FM anyway, and from what I understand, virtually no US FM reaches there.

I know that my Soviet set tends to have spurious images and such. As for sound, yes they do sound pretty good, my set is not tinny at all like a lot of the Japanese sets sold in the US, but it is not capable of DXing or anything while I could easily pick up faraway stns with the American radios I had as a kid. I also have an early-80s MW radio from mainland China, just as their manufacturing was getting started, and that radio is VERY poorly made-the batteries don't fit correctly, for example-and can only get 2 or 3 of the strongest local MW stns.
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KC4ZGP
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« Reply #11 on: August 09, 2017, 10:57:08 AM »


Those Soviet transistor radios are spy devices. Sometimes they send subliminal signals to your brain programming you to the socialist, communist, leninist, marxist, liberal, left-wing lifestyle. Don't believe me? If you think rich people are your enemy, it worked on you.

Take a hammer to them immediately. Save your family, save your self.

Kraus
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KJ6ZOL
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« Reply #12 on: August 09, 2017, 12:40:50 PM »


Those Soviet transistor radios are spy devices. Sometimes they send subliminal signals to your brain programming you to the socialist, communist, leninist, marxist, liberal, left-wing lifestyle. Don't believe me? If you think rich people are your enemy, it worked on you.

Take a hammer to them immediately. Save your family, save your self.

Kraus

 Cheesy Cheesy Cheesy Cheesy Grin Grin Grin Grin Mega lulz, you get the lulz award. And here I thought that Duga-3 was decommissioned after Chernobyl blew up. Of course, since my radio is stored without the battery, it's useless to the liberal reptilian overlords in their secret space station.
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KC4ZGP
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« Reply #13 on: August 09, 2017, 04:35:55 PM »


Thank you, thank you very much.

Kraus
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