Speaking from the camp that wants to see the Part 15 hobby survive and grow I also have been disturbed by recent behavior at the ALPB.
The power grab referred to took place at the exact time when Jim Henry was undergoing critical surgery, making the act especially ugsome.
The thread regarding the renaming of the surviving forum is…[Read more]
It seems that Part15.org is scooping The Blare Blog (kdxradio.com) by having this news before they do…
In 2019 the unpopular Blare OnAir series will end after over 10-years.
Several fresh editions of The Low Power Hour will be released.
And a new show for low power radio stations will be released, details are still a closely guarded…[Read more]
Obviously part 15 would not benefit from a mile-high building, but we are thinking about constructing a minimal shed with our 10-foot AM mast on top.
The advantages are obvious… the transmitter would be better shielded from the elements as would be the technician, protected from weather with an overhead lamp and small shelf for test…[Read more]
The CFA was invented by Maurice Hately and first patented in 1992, after which all rights were transferred Robert E. Richer, who has been actively seeking FCC authorization for his antenna by the FCC for the AM band.
What distinguishes the CFA is its comparatively small size compared to ordinary AM masts and its ability to function without…[Read more]
Flexible Wiggle Room
It is true as Mark says: “The rule doesn’t say anything about actual usable output as what matters…. the 10 ft. antenna.”
What that means is that if the RF amplifier output stage is more efficient, you get a better field strength.
Just like if your antenna, loading coil, grounding is well designed you get better results.
Conversions and Transformations
Because: “converting DC to RF.”
In a special sense (you may correct me if I’m wrong) it’s a matter of converting DC to AC. But it’s not common 60-Cycle AC, it’s AC at the RF frequency.
Tim ran into what sounds like “the old problem”: “I tried to edit and add that to the above post but the forum refused to let me edit that post, or to add a new post.”
Rich Powers and I had been running into that problem a lot until J.P.Janze found and fixed the probable cause. Since that time I have had no trouble at all nor has R.P.…[Read more]
After listening to the conversation/interview between podcaster Sam Harris and Twitter CEO Jack Dorsey there was a distinct sense that I knew Mr. Dorsey simply because of how good their visit turned out.
Many radio stations operate from downtown studios with transmitter and tower way out in the burbs, while other stations house studios and transmitter in the same building with a tower on the property.
After thinking about the possibilities, KDX has decided that everything could ideally be co-located in a single sky scraper, and we’re shopping…[Read more]
The Good Thing About It
Now the 3rd down-vote on rap, AMRadioLegend none-the-less makes a good point about this forum at part15.org:
We are straight-forward, blunt, frank, open and honest in what we think and we say it despite the ridicule it may bring.
Now on to the ridicule.
The artist Childish Gambino made the first rap-based song to win Record and Artist of the Year at the Grammy Awards on Sunday (2/10/19).
I have always seen the entertainment, educational and commercial potential of rap music, which is distinguished by being the only genre twice bad-mouthed on this forum-site.
The 7 Facts About Part 15
I also notice plenty of “shorthand” stating that Part 15 AM outputs 100 mW (1/10th Watt).
Perhaps I’ve contributed to this by insisting that “the final output stage” is logically the antenna and not the final RF amplifier.
Perhaps the now legendary Talking House ATU (Antenna Tuning Unit) contributes to this by having…[Read more]
You’re Not Thinking
Those new to the activity realize that printers carry a Part 15 sticker because they, along with other computer parts, are typically Wi-Fi devices or otherwise emit RF radiation.
Further… printers are a communications medium in the class of media formats including radio, TV, microwave, and print, for passing messages by…[Read more]
A co-worker told me that printers today are “throw-away” devices. If yours stops working, it doesn’t go to the repair shop because there are no repair shops. So you end up with enough printers to build a cabin out of them, like over-sized Legos.
While they work they depend on little toy ink cartridges, lots of them each filled with different…[Read more]
The Trail Leads to None Other
The AM transmitter at the other end of Mark’s link leads to none other than the well known Sean Cuthbert, famous for his C-QUAM AM transmitters.
The product description contains a link to Sean himself explaining the small AM transmitter featured in this offer.
Manual or Automatic
Tim describes automated downloading: “I always provide the Oompah Hour at the exact same link every week. In case someone has an auto-download program, they can set it up to do to the same link every time. I’ve always assumed that Zara and such programs had this ability.”
Zara does have auto-download capability as several u…[Read more]
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