Amateur Radio Beacon JAM 187khz LowFer 1750 meters Longwave

Amateur Radio Beacon JAM now 187khz LowFer 1750 meters Longwave LW low power broadcasting FCC part 15 station DX440 receiver AM88 transmitter La Crescenta, California. Current max distance copied is 2040 miles for a partial copy using computer spectrum software. 800 miles for a complete copy using computer spectrum software. 1 watt final input, 5 to 7 mw ERP. Locally copied by ear {no spectrum software} by SMV {now EMP} in CA, Bakersfield and CA, Santa Barbera. Both 100 mile acoustic audio copies. Using a speaker or headphones.

Category:

Science & Technology

Tags:

• Amateur
• Radio
• Beacon
• JAM
• 187khz
• Lowfer
• 1750
• meters
• Longwave
• LW
• low
• power
• broadcasting
• FCC
• part
• 15
• station
• beacon
• DX440
• receiver
• AM88
• transmitter
• Low
• Frequency
• LF90
• NDB
• LWCA
• Morse
• Code
• CW
• QRSS
• QRP
• Argo
• Spectran
• pirate
• radio
• Hot
• Ham
• Chics
• push
• your
• PTT
• button
• compression
• processed
• audio
• max
• SN
• ratio
• sunspots
• space
• weather
• solar-terrestrial
• geomagnetic
• storm
• solar
• wind

[KBextor]

Sorry, what is the use of this?

[fccpart15jam]

@KBextor

The use of commercial beacons are usually for navigation aids and weather info for the aviation and marine industries. Amateur radio beacons are usually for helping distant listeners determine if a radio band is open or as a receive target for distant listeners looking for a rare station to receive.

[VitalisCarbone]

Good video. I would like to hear what music sounds like on 1750 meters at the same distance.

[fccpart15jam]

@VitalisCarbone Music probably won't sound so good. Because the antenna is so physicaly short compared to an actual 1/4 wave antenna. It has to be a high Q resonated antenna to radiate anything. This antenna is tuned to the coil winding tap that produces max antenna current at the operating freq 187khz. Audio/music sidebands would be plus or minus the 187khz operating freq by up to 10khz on the AM88 transmiter I use. The sidebands would not radiate well because of the tuned antenna.

[G0IMB]

Nice set up. We have a 136kHz allocation but I've never got round to building a transmitter. I've heard more activity on 501kHz even had a cross band QSO but not yet got a NoV (Permit) for the band.

[k2ors]

COOL, 1st Lowfer beacon that I've seen on Youtube!

73 Warren K2ORS

[aqdrobert]

Once ran beacon "Six Echo", 1630 kHz, 100mW to ten foot whip in Dec. 1989. Old tube transmitter burned out in one night. Heard 120 miles away -- Phoenix, AZ to Tucson, AZ nights, and a couple miles daytimes. QSL'ed MEDFER beacons in CA, too! Long Live Part 15!

73