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Messages - R4002

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Lots of QRM from Cuban jammer spur, pretty sure its Portuguese.  Wanted to log this since I haven't heard activity on 6911 USB before.

Very busy frequency tonight 6900 kHz LSB

To second Chris' post, Relay Station 5150 is coming in considerably weaker than usual this morning.

Just a carrier and some very weak audio at 1524 UTC tune-in

i noticed felipe calling alberto, where alberto is slightly off frequency like felipe used to be, maybe felipe gave alberto his old rig :)

I bet the equipment used is probably on its 3rd or 4th owner and has likely never been aligned :D

Out of town still, listening on various SDRs.  These guys are currently the only thing popping up on the band on most East Coast/Midwest USA remote SDRs.  QSO started on what I'm calling the "frecuencia de llamando oficial de 43 metros" [official 43 meter calling frequency] and then moved up 5 kHz to 6905 kHz.  

Two several OMs chatting away, very informal, have addressed each other directly several times.  OMs talking over stations, the usual "hola! hola!" and "copiando" (i copy/do you copy?) traffic.  One OM just mentioned "llame me numero cellular" (should be easy to figure that one out - "call my cell phone number") and the channel went quiet at 1346 UTC.  Possible two stations were doing propagation/signal testing.

Activity came back up at 1348 UTC, but sounds like different stations.  "Buenas dias!", "estoy llamando" ("Good morning, I am calling....") etc.  Very informal CB-like chatter, sometimes a station will talk over another one but its nothing like the mess that is often heard on 6925 LSB.  

6900 kHz LSB continues to remind me of 27695 USB/LSB, 27665 USB/LSB and the various frequencies around those two (5 kHz steps), which seem to be the unofficial Latin American "freeband" calling frequencies, and people move up and down from there.  I have a feeling that 6900 kHz is the same thing only for 43 meters.  Wouldn't surprise me if some of these operators are simply moving down in frequency when 11 meters stops providing reliable long-range propagation.  The accents are similar, the use of 5 kHz steps, switching between LSB and USB as a way to escape QRM, congregating around a "calling frequency" or "watering hole" and then going up (or down) in 5 kHz steps from that starting frequency.  

While today's monitoring did not yield any location information (names of cities, obvious accents, etc), monitoring of 6900 LSB kHz / 6900 kHz USB in the past have indicated the following:  Mexican and Central American accents, names of Mexican cities, and propagation when the 6925 LSB guys are nowhere to be found says to me that at least some of these stations are coming out of Mexico.  That's not to say that some of them aren't land-based stations talking to people on boats/fishing fleets.  More exploration into the 690x groups is needed before I can say for sure either way.

EDIT:   at roughly 1350 UTC, at least some of the stations that were on 6900 LSB QSYed up to 6905 LSB and continued their QSO.  I figured I would just edit this post instead of creating a whole new thread.   ;D

I suspect that the peskies down on in the 690x area may be a completely different group (going by propagation/time of day, type of conversation, and, of course, language) than the ones hanging out on 6919 LSB, 6925 LSB, 6933 LSB, etc

I have passable Spanish language skills, somewhat limited vocabulary but ability to pick out accents is helpful. (luckily the Spanish vocabulary used in radio communications isn't too extensive) and have spent a large amount of time listening to 11 meter traffic coming out of Latin America when my "HF" setup consisted of only 11 meters.

10/11 meters / Re: Some actual activity on 11m
« on: March 22, 2017, 1345 UTC »
Besides 27025 AM, what other frequencies did you log? Yes, including the Latin American stuff  ;D

Peskies / UNID 6868 kHz LSB 0105-0107+ UTC 22 March 2017
« on: March 22, 2017, 0108 UTC »
More Portuguese-speaking traffic tonight (see also, 6800 kHz USB, 6925 kHz LSB, and a dozen other frequencies). 

This is another easy-to-remember frequency (like 6800, 6900, 6925, 6969, 8000, 8888, etc). 

Two Portuguese-speaking operators talking on 6800 kHz USB with some minor QRM from 6795 USB and 6805 LSB.  Unfortunately heavy static QRN making copy nearly impossible.  

Similar sounding traffic to what was heard earlier this evening on 6925 LSB and similar frequencies, complete with operators laughing at each other and whistling into the microphone

"One two...hello one two...Hola hola?"

Repeated several times over.  Very strong signals - nearly SIO 444 at points.  Operator doesn't seem to be talking to anybody, probably just doing radio testing.

Still repeating the same thing over and over when I turned the VFO

Much stronger signals this evening than most other frequencies heard on the band (including 6935 LSB, 6920 LSB, etc).  Can confirm that the language is in, fact, Spanish.

Following operators noted talking in a net-like fashion (referred to as "el grupo"):

-Carlos, Mexico City
-Rodrigo (??), Jalisco
-Pablo (unknown location)
-"unit 67"
-several others that I'm unable to confirm name/location

Mostly professional-sounding communications, operators saying hello to each other, giving signal reports, with the occasional "HOLA HOLA HOOLLLLAAAA" or transmission on top of on-going traffic.  Mention of "Cubana" "Puerto Rico" and other Caribbean locations.  Requests for signal reports, mention of cell phone numbers, all going on in what almost seems like a directed net.  SIO 333 at best, down to SIO 111 during heavy static crashes and co-channel QRM.  

Peskies / UNID 6935 LSB 0045+ UTC 22 March 2017
« on: March 22, 2017, 0051 UTC »
Hearing very faint two-way traffic on 6935 kHz LSB.  Very weak signals, but sounds like Portuguese to me.  Likely multiple stations talking over each other making copy difficult, combined with nearly nonstop static noise crashes.  SIO 111 from 0045 to 0051 UTC

I have a tiny bit of audio on 6925 kHz AM.  On the waterfall (on 3 different remote SDRs too) it does appear that there are two carriers going at once.  6925.0 kHz and 6924.9ish (probably closer to 6924.8 kHz).  Still only hearing bits and pieces of audio on 6925, combined with LSB traffic and OTH radar bursts from time to time as well.

I presume Pigmeat is referring to Dita [Von Teese] (here's her official website: http://www.dita.net/;D

Do a Google Image Search or Bing Image Search for "Dita Von Teese"

Hearing what almost sound like telemetry signals on 27255 kHz this morning.  Data bursts roughly 10 kHz wide...varies from every 2 seconds to a 10-12 second wait between bursts.  Nothing else on frequency this morning, and the 11 meter band is relatively quiet.  Just the usual 27185 (Channel 19) and 27355 (Channel 35) AM voice traffic.

I've heard POCSAG mode paging on 27.255 (CB channel 23) before and I know it is used for various on-site telemetry system in addition to R/C purposes (with 26995, 27045, 27095, 27145 and 27195). I have also logged non-stop tone signals on 27255 (although this very well could have been CBers playing around).

FCC rules permit up to 25 watts carrier power on 27.255 MHz for telemetry, paging, etc...that means 100 watts PEP power in AM mode :D


Reference FCC Rules:

47 CFR 95.207 (FCC Rules Part 95 Section 207)
47 CFR 95.210 (FCC Rules Part 95 Section 210)

47 CFR 95.207 95.207 (R/C Rule 7) On what channels may I operate?
(1) The following channels may be used to operate any kind of device (any object or apparatus, except an R/C transmitter), including a model aircraft device (any small imitation of an aircraft) or a model surface craft device (any small imitation of a boat, car or vehicle for carrying people or objects, except aircraft): 26.995, 27.045, 27.095, 27.145, 27.195 and 27.255 MHz.

47 CFR 95.207b 95.207b
(b) You must share the channels with other R/C stations. You must cooperate in the selection and use of the channels. You must share the Channel 27.255 MHz with stations in other radio services. There is no protection from interference on any of these channels.

47 CFR 95.207f 95.207f
(f) Stations in the 26-27 MHz range are not afforded any protection from interference caused by the operation of industrial, scientific of medical devices. Such stations also operate on a shared basis with other stations in the Personal Radio Services.

47 CFR 95.210 95.210 (R/C Rule 10) How much power may I use?

47 CFR 95.210a 95.210a
(a) Your R/C station transmitter power output must not exceed the following value under any conditions:

Channel: 27.255 MHz  Transmitter power (carrier power) (watts) 25
Channel: 26.995-27.195 MHz Transmitter power (carrier power) (watts) 4
Channel: 72-76 MHz Transmitter power (carrier power) (watts) 0.75

Since the FCC regulations under 95.210 specifically state transmitter carrier power instead of peak envelope power, just like how the CB rules specify 4 watts maximum carrier power for 26.965-27.405 MHz, that means that peak envelope power (PEP) for 27.255 can legally be up 100 watts (just like PEP on the CB channels can legally be up to 16 watts).

This also means that you can transmit up to 4 watts carrier / 16 watts PEP on 26.995 MHz, 27.045 MHz, 27.095 MHz, 27.145 MHz and 27.195 MHz for R/C purposes.  Interestingly enough, 27.255 MHz is included in the R/C services for telecommand and telemetry, which one could infer that the other 5 frequencies could be used for this purpose as well (with less maximum transmitter power than allowed on 27.255 MHz).  27.255 is also the only one out of the six available 26-27 MHz channels that is shared with a legal CB channel.

FWIW, this also translates to a maximum power (PEP) of 3 watts (0.75 watts carrier x4) on the 72.01 MHz to 72.99 MHz and 75.41-75.99 MHz bands.

S8 to S9 signal level at 1416 UTC tune-in.  "Relay Station 51-50" voice ID at 1417 UTC.

SIO 555.  10 kHz wide signal very strong audio and great signal as usual.  Perfect armchair copy this morning.

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