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7000.0 kHz carrier

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BoomboxDX:
I heard this carrier again on 7000+ over the last two weeks or so, after a long time without hearing it. Strength varies, between S2-S3, and no idea where it comes from.

EDIT: I forgot to add here that I'm in the NW US, WA state.

Rob.:
I have the carrier here as well - S5-7

QSLCollector:
I noticed it once I started to hunt Peskies, but never questioned it.

S5 via W3HFU Westminster, MD, USA but I see other carries between 6.9 and 7

S5 via OE5SLN Upper Austria SDR without the others

S3 via Blackheath, NSW SDR Australia without the others

When I check New Zealand, the Philippines, or the countries around the Philippines, it doesn't show up on any of theirs.

QSLCollector:

--- Quote from: autovon on July 06, 2025, 1401 UTC ---If you have forum access on QRZ, there is a thread going there about it.
https://forums.qrz.com/index.php?threads/7-mhz-carrier-anyone-else-hear-this.959073/

--- End quote ---

Can you summarize it for us here, if possible.

BoomboxDX:

--- Quote from: QSLCollector on June 16, 2026, 2210 UTC ---
--- Quote from: autovon on July 06, 2025, 1401 UTC ---If you have forum access on QRZ, there is a thread going there about it.
https://forums.qrz.com/index.php?threads/7-mhz-carrier-anyone-else-hear-this.959073/

--- End quote ---

Can you summarize it for us here, if possible.

--- End quote ---

The last post on the QRZ thread is from mid July, 2025. The thread is 11 pages long, and there were no conclusions as to the location, or exact nature of the signal. Some believed they saw some 'harmonics' about 250 kHz away from the 7000 carrier, others didn't pick up those 'harmonics', so that is inconclusive.

One guy said he's been hearing the carrier on 7000 kHz periodically for about 2 years. A poster from the UK heard the carrier, as did a poster in Puerto Rico. A poster in the Marianas heard it, exactly on 7000 kHz. An SDR from NZ picked it up. One poster found the carrier on SDR's from three locations in Scandinavia. Posters from various regions of the US have heard it, just like here on HFU.

A guy on the QRZ thread peculated that it's possible that there are more than one carrier on 7000 kHz, and some of the signal characteristics noted might be the two (or more) simulcast carriers interfering with each other (frequency beating against another co-channel carrier).

I haven't heard more than one carrier on the frequency when I've heard it, but I don't have an SDR so someone with an SDR, or radio with a waterfall, might 'see' more than I'm hearing.

One poster speculated that it might be originating from the SW Pacific somewhere.

Anyway, that's the basic extent of what the hams on QRZ were saying about the carrier.

Basically, none of us seem to know what its purpose is, or even where it's located.  If it's just one transmitter, it has to be running a bit of power to be heard over the wide swath of territory where it's being heard.

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