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Author Topic: Arecibo HF Heater Planned Ops  (Read 1030 times)

Offline Boriken

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Arecibo HF Heater Planned Ops
« on: May 17, 2019, 0237 UTC »
Arecibo telescope HF heater operations planned for the week of June 10 2019. Usually around 5100kc and/or 8175kc.

http://www.naic.edu/vscience/schedule/scedfra2.htm
Scott / WB4YZA
Western North Carolina
Mosty homebrew, 100% analog

Offline Boriken

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Re: Arecibo HF Heater Planned Ops
« Reply #1 on: June 10, 2019, 1309 UTC »
Fairly strong carrier on 5100kc. Showed up shortly before 1300 UTC.
Scott / WB4YZA
Western North Carolina
Mosty homebrew, 100% analog

Offline ChrisSmolinski

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Re: Arecibo HF Heater Planned Ops
« Reply #2 on: June 10, 2019, 1401 UTC »
I have seen a carrier switch on and off a few times, most recently it switched on at 1400z sharp.
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 58 ft T2FD / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline SV1XV

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Re: Arecibo HF Heater Planned Ops
« Reply #3 on: June 12, 2019, 0401 UTC »

Arecibo on 5125.5 kHz par SV1XV, on ipernity

Last night I received a strong DSB signal, 11 kHz wide and centered on 5125.5 kHz, with sweeping audio modulation, at 00:30-01:39 UTC. Twitter user @HAARPDXing2017 confirmed that this was indeed the Arecibo Observatory ionospheric heater. The Arecibo signal was received using a Perseus SDR receiver and a dipole antenna.

A Perseus screen capture is available here:

http://www.ipernity.com/doc/777361/48740780



.
« Last Edit: June 12, 2019, 0403 UTC by SV1XV »

Offline ChrisSmolinski

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Re: Arecibo HF Heater Planned Ops
« Reply #4 on: June 12, 2019, 1343 UTC »
I have the same pattern 1340 UTC 12 Jun 2019 centered on 5125 kHz

Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 58 ft T2FD / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline SV1XV

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Re: Arecibo HF Heater Planned Ops
« Reply #5 on: June 13, 2019, 0007 UTC »

Arecibo on 5125.1 kHz par SV1XV, on ipernity

Again a strong signal from Arecibo Observatory, 11 kHz wide and centered on 5125.1 kHz, with a new sweeping modulation pattern, at 23:50 UTC.  The Arecibo signal was received using a Perseus SDR receiver and a dipole antenna.

A full size Perseus screen capture is available here:

http://www.ipernity.com/doc/777361/48743814


Offline Boriken

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Re: Arecibo HF Heater Planned Ops
« Reply #6 on: June 13, 2019, 0040 UTC »
Still going strong with the sweeping at 0030 UTC. Just a sweeping tone to us with analog receivers. Your screen caps looks like they're sending the aliens a road map.
Scott / WB4YZA
Western North Carolina
Mosty homebrew, 100% analog

Offline Sparx

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Re: Arecibo HF Heater Planned Ops
« Reply #7 on: June 13, 2019, 0047 UTC »
VERY strong, clean signal in MN on 5125.   Repeated Y-shape on the waterfall.   
Nothing on 8175.
Waiting for ET to reply.

0115 Stopped.
« Last Edit: June 13, 2019, 0124 UTC by Sparx »
Central Minnesota
ALA1530LN > RSP1 > SDRUno

Offline SV1XV

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Re: Arecibo HF Heater Planned Ops
« Reply #8 on: June 14, 2019, 2233 UTC »
Tonight, at 22:30 UTC,  the Arecibo Observatory signal consists of an unmodulated tone carrier (ITU designation N0N)  on 5125.0 kHz.
« Last Edit: June 15, 2019, 0501 UTC by SV1XV »

Offline Josh

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Re: Arecibo HF Heater Planned Ops
« Reply #9 on: June 14, 2019, 2304 UTC »
S1 to S5 carrier with quick fades, no mod @ 2303.
Conveniently located near Vincennes Indiana.

Offline R4002

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Re: Arecibo HF Heater Planned Ops
« Reply #10 on: June 17, 2019, 1441 UTC »
Considering the power they're running, I wonder if they're causing any QRM to the datalink transmission appearing on the waterfall image around 5120 kHz / 5120.5 kHz (appears to be centered on 5120.7 kHz or so).
U.S. East Coast, various HF/VHF/UHF radios/scanners/receivers