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Author Topic: The Low-Down On Long-Wave: Unlicensed Experimental Radio?  (Read 518 times)

Offline ThaDood

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The Low-Down On Long-Wave: Unlicensed Experimental Radio?
« on: November 14, 2021, 2212 UTC »
Interesting that HACKADAY covered this, but.....       https://hackaday.com/2021/10/19/the-low-down-on-long-wave-unlicensed-experimental-radio/

BTW, there are still NBFM Intercoms out there that use the 1750M band, around 175kHz, but many are 10mW, or even less. Still, some of the older ones can be cranked-up.
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Offline NQC

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Re: The Low-Down On Long-Wave: Unlicensed Experimental Radio?
« Reply #1 on: November 15, 2021, 1313 UTC »
Hey Dood,

Very interesting article, but it seems a bit "off" in places.

My Hifer beacon was heard in Kansas and further in . Other Hifers  have done quite well and cover large portions of the US at times. MANY supposedly still on air. Definitely the best bang for the buck !  HF super low power can still work to a good receiving station under good conditions. And as you know, at least a FEW low power beacons "show up" all over HF .

Lowfer beacons have also been heard at considerable distances . 18"actives" listed on 2200 M or 1750  meters.

I haven't had any experience with the  Medfer rules per se, much of what we  did  on the BCB was with either super   flea  transmitters ( one I built had around a ONE inch range , but the audio was fantastic !) or something much "bigger" . We   used "whatever" re power and antenna but we always ran "clean" filtering  and  on an unused frequency, usually in the X band.

MEDer .Only one old listing of a single station.

Betweenfers authorized in Canada ie  at 6776 Kc . One  single old listing.

49er band  on old baby monitor /toy walkie talkie frequencies ie 49.86 Mc. But only one old listing.

Outside of the  Hifer and 220/1750 band you really need to look here on HFU or set up ahead of time with a ham friend to copy your transmission .

I'd love put up another beacon on "HF" ( I   have a GOOD   8  Mc crystal  and   the parts ), but  as you know, a super  low power station really needs a good antenna .Portable /temporary is  probably my best bet. Maybe when the cycle comes up a bit.

de K

Station main receiver : Bed springs to  blue razor blade detector to 2000 ohm cans to steam  radiator. Grid FN 42


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