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Author Topic: Currently Active Beacons  (Read 21786 times)

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #15 on: May 04, 2020, 2237 UTC »
Former Viking re-installed as "Phallaxy" (due to the shape of the cool granite rocks nearby...).  I think you guys have the other updates fine.. MB

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #16 on: May 04, 2020, 2245 UTC »
Chris/Jim/others:  I am hearing - since about a week now but it is not one I know anything about **honest** save for it is a weak daytimer and so closer than Coxie and is similar strength as Coxie.  Sends "R" in a slow ident with a short space.  It's on ~4096.2 approx.  I've been monitoring it as well as the Phallaxy Beacon (etc.). NOT anything Iknow but THANKS to the op!

Ident not similar to the 5.1 sec. cycle 521.48 "R" beacon in the desert with reportedly 60w input... but 2-3 w ERP...  hmmm... 

Coxie often begins with a chirp. Phallaxy has none... both remain daytime only.  Coxie is easily 10-15 dB stronger than Phallaxy here...

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #17 on: May 04, 2020, 2249 UTC »
Could this be the Inyo Whooper?  An imposter maybe?   Listening to the Northern Utah SDR this morning 1445Z I see and hear a dasher on 4097.2 KHz.  Seems to be a bit faster than one dash/sec.  Some fading but overall a pretty good signal into that receiver.

Alledgedly is is the "Inyo Whooper" back safe in it's shop where it was built back in 2007 just put on as a test... me thinks... MB

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #18 on: May 04, 2020, 2253 UTC »
What happened to the 'Inyo Whooper' (a daytimer) was that its solar-panel partially-failed and was putting out only 4 volts intermittently.  The antenna was trashed by winds and nibblers after 10 years - kinda flimsy wire anyway - never thought it would last so long..., so it kinda was NG and so the thing had to go home, alledgedly... me thinks... it can be put on from its home... someplace ... still 4097.2 but i believe its keying cap was changed a tad...

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #19 on: May 04, 2020, 2257 UTC »
2 suggestions about the listing of the "Rocky" beacon at 6626.4 kHz. 

  • 1. Rocky beacon might better be described as an "AM variable tone beacon" rather than a "buzzer beacon".
  • 2. The observed average center frequency of Rocky this year has been 6626.4 kHz, rather than 6626.2 kHz.

It appears that the transmitted tone modulation frequency is possibly related to temperature.
The hotter, the lower pitched the audio tone.
The colder, the higher pitched the audio tone.

When observed on a hot day in August, the frequency was 56 Hz, and it indeed sounded like a buzzer due to the lower pitch of the audio tone.

However, when observed during colder days in November, the audio tone modulation frequency was running between about 700 Hz ~ 1000 Hz, and it didn't sound at all like a buzzer, but more like a triangle wave or square wave oscillator, listen:

PLAY AUDIO 6626kHz Rocky AM tone beacon 2018NOV 2324UTC

We wonder whether the suspected temperature tone variability is intentional?

If indeed the temperature vs tone frequency is an intentional feature of this beacon, then this beacon might be described as an
Amplitude Modulated tone temperature telemetry beacon

Isn't that fascinating? :)

AMAZINGLY IT WAS A CRAPPY OLD 70s (oops caps lok) radio-shack kit-cannabilized cap. 10 uF in the RC keying ckt. that failed!! Just a malfunctioning cap!  It led to this phenomenon! Now the Rocky beacon has a new 22 uF Sprauge 2020 version - ...  alledgedly... MB

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #20 on: May 04, 2020, 2306 UTC »
And a final note for today to update it all here is that Coxie (~4096.0) is still as-is and will be left alone.  It's cool and old now (19 yrs.) and day-only with a big start-up chirp but has good ERP but less than The Wind Beacon.

SO the above 5 or so posting should fill in the blanks and corrections for all, I think, allegedly.  I guess or assume.  I suppose and conjecture on all of this ...

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #21 on: May 04, 2020, 2314 UTC »
Yes one other last thing I believe maybe perhaps allegedly -  when ROCKY-had-a-bad-buzz was visited in March, it's solar-panel wires were almost DOA due to nibblers - maybe a few month's time left and it would be gone if too far to get to... so it came back to someplace to be fixed and put on a fence... :-)

Thanks for allof the total fun listening dudes and dudesses. watch out for the big bad spiky bug king...

Offline MojaveBeaconeer

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Re: Currently Active Beacons
« Reply #22 on: May 21, 2020, 2042 UTC »
~4096.0 "Coxie" in JTNP still loud and clear still here by early morning past Sunrise and by 1700PT also, and it will go for as long as it can.  Oh, would you know another replacement of the former "Haystack" beacon on 4096.35 is planned and should be audible back/down-east if a site with a good eastward low-angle signal launch point can be located... 73 MB