Topics

1

HF Beacons / FB Beacon 7998.95

« on: September 17, 2021, 1621 UTC »

Received a beacon at approximately 1600 transmitting "FB" on 7998.95, on the KFS SE, KFS Omni, and Northern Utah #3 kiwis. All subject to a great deal of fading. The transmissions seem to have abruptly stopped at 1618.

2

HF Beacons / New dasher 4093.2?

« on: January 19, 2021, 1704 UTC »

Heard for the last couple of minutes on the KFS 135° receiver, a 0.5s dash about every 2 seconds. It's in and out of the mush.

3

HF Beacons / New dasher beacon at 7999.10?

« on: December 10, 2020, 2051 UTC »

I'm currently receiving from the KFS 135 receiver. 2 seconds on, 2 seconds off, 15 dashes per minute fairly precisely. This doesn't seem to be any of the listed current beacons. Also heard fairly strongly on the Northern Utah Omni receiver.

Anyone else receive this signal?

73, Drew NØXU

4

HF Mystery Signals / Beacon network logging 10/1/20 16:17z

« on: October 01, 2020, 1618 UTC »

Going on right now (1617z), one dit every ~8 seconds. Very strong on the Northern Utah KiwiSDR.

So far I've found 6700 kHz (just below the ditter beacon and 6700.5) and 7050. Loggings continue, updates in comments.

73, NØXU

5

HF Mystery Signals / Beacon network/Sonde logging 6/17/20 1644 to 1730 UT

« on: June 17, 2020, 1806 UTC »

Not sure if this belongs here, but I logged the following on multiple KiwiSDRs on the east coast. The characteristic of the signal (with one exception, noted below) was a double pulse every four seconds, (pulses of 0.04 s separated by 0.04 seconds). The signal on 5007 was of the form single pulse, double pulse, single pulse, <rinse repeat>.

The signal appeared to be a carrier centered on the frequencies below with a 2 kHz signal on on both sidebands.

I don't know if there were any signals above 9228 kHz, as these disappeared at 1730 UT.

These were received on KiwiSDRs in Uniontown, PA (W3PIE), Westminster, MD, Rockport, ME (WA2ZKD/1), but the uniformly strongest signal was on a receiver in Niantic, CT (KK1D). I was unable to perform a successful TDoA, likely because of the brief nature of the signals.

Frequencies, kHz
4610.5
5007
5225
5617
2800
6000
3183
6268
6420
6500
6803.4
6812
6843.4
7049
7321.4
7617
8125
8365
5610
8828
9235
9288

6

HF Beacons / Beacon network logs 2/6/20 2130-2230 UTC

« on: February 07, 2020, 1605 UTC »

I logged, from multiple KiwiSDR receivers, a beacon network yesterday. Unfortunately, due to personal commitments, I wasn't able to post this real time, nor perform a TDOA location analysis, which I very much regret. For the same reason, I was unable to correlate the timing of the transmissions as synchronous either with UTC or between frequencies.

The signals were received primarily from the KiwiSDR receiver in Westminster, MD, but most were almost universally received from the WA2ZKD receiver in Rochester, NY and the WA2ZKD receiver in Rockport, ME. Some could be received from the KPH HF receiver in California. I also received the same transmissions on a few frequencies on SDR# from a receiver in Florida.

The signal characteristics were CW transmissions of 0.25 s, spaced 7.5 s apart, with a carrier reduction of approximately 10 db for 0.015 s in the center of the transmission. This gave the sound of *almost* a double-dit. I made two recordings of these transmissions and examined them in Audacity to make this analysis.

The frequencies on which I was able to receive the transmissions were:

6700
6825
7450
7950
8575
9950
11200
11700
12450

73, Drew, N0XU.

7

HF Beacons / Windy 4102.85 malfunction?

« on: December 05, 2019, 2123 UTC »

Windy appears to be transmitting only an "H"  every 65 seconds or so.

Heard on the ND7M KiwiSDR in southern Nevada today at 2120Z.

8

HF Beacons / 4089 kHz dasher, 7/2/19 1647Z

« on: July 02, 2019, 1647 UTC »

Found a new one (to me): a dasher on 4089, 30 dashes per second, each dash about 0.4 seconds long. Anyone else log this one?

[edited to correct the dash rate].