I think it is a remote broadcast link, no? 25870 is a shortwave frequency next to one of the traditional SW bands, and subject to all kinds of weird interference, like having a station from Zimbabwe overriding your local point-to-point broadcast!Isn't the 11 meter transmitter a studio-transmitter link? Especially with a call-sign like KPM360? I haven't heard an actual broadcaster on 11 meters in at least two sunspot cycles.
The WFLA 11 meter signal would be for IFB purposes with remote crews. There are still a few stations that use such links on shortwave.Isn't the 11 meter transmitter a studio-transmitter link? Especially with a call-sign like KPM360? I haven't heard an actual broadcaster on 11 meters in at least two sunspot cycles.
25870 is in the middle of the 11 meter international broadcast band. This band has very little current use, although a few broadcasters such as the BBC will place some output there. This past winter the BBC used 25900 for one of its transmissions to Africa, and I was able to get fair reception of it in Houston.I think it is a remote broadcast link, no? 25870 is a shortwave frequency next to one of the traditional SW bands, and subject to all kinds of weird interference, like having a station from Zimbabwe overriding your local point-to-point broadcast!
How far away did you hear the traces of it?I believe I've heard faint traces before of WFLA (years ago) on 25.870, and I know the KSCS Fort Worth relay used to be heard on 25990khz years ago during high solar activity (much stronger than WFLA). Long gone now.
My only experience of that sort was buying an AM/SW combo in Ecuador in the mid-60's and finding about half of a cabinet drawer full or reception reports from North America, Europe, Oceania, etc. The SW was in the 90 meter band with a transmitter that was pushing to even get 500 watts out of it.The nice thing is that the Part 74 rules do allow A3E (AM) emissions in this band. Growing up, I remember one in Los Angeles for KABC-TV and used F3E (FM) emmissions. During cycle peaks, it would be interesting to put 100 watts AM on 11m just to see where it goes.
We're headed towards a peak now, I believe. It's a shame that these links are probably not used anymore, it would be worth scanning through that band sometimes if I thought I'd hear something.During cycle peaks, it would be interesting to put 100 watts AM on 11m just to see where it goes.
Someone could email them and ask:WFLA 25 MHz was a well-known DX target in its day. I heard it on the West Coast at times. I don't know if this remote unit is still around. Old SWL DX logs noted its presence. If believe it was left on the air for extended hours as sort of a DX target courtesy of the engineering staff.
I remember that, the Key West transmitters were a regular catch for me on the east coast. Dropped in 2012 due to budget cuts.I remember hearing feeds of AFRTS (Armed Forces radio) from Florida in single sideband on shortwave, I believe somewhere between 10 and 11 MHz. This was after regular SW transmissions from American transmitter sites -- shared with Voice of America -- had ended, in the '90s or '00s. Anyone else recall those?