said by richk_1957:
It's going to take a major accident, where people are killed, because BPL interfered with communications to make everyone take notice just how interfering it can be. Sure, Ham Radio operators are the most vocal, but if you look at a frequency chart of allocations to the HF spectrum, Ham's are only a small part. There are many, many
other services that it would affect.
I hate to say it, but I think you're right.
Take the shortwave broadcast frequencies. Most Americans are oblivious to these, while the rest of the world isn't. There is a whole other world of radio programs out there to listen to, from around the world.
In the Katrina disaster, the powerhouse radio station WWL 870, that dropped to half power to conserve fuel to it's generator and was off for two days during the worst of it, is simulcast over shortwave to get the story out of New Orleans on several different shortwave channels. Survivors around the US have been using this to keep in touch and find each other via a call-in show running 24x7 interspersed with other reports.
With BPL, this shortwave reception would be impossible, and these receptions are not protected by ham notching or other schemes to protect ham operators. These HF users are just out of luck, trampled by the BPL noise.
Then there are the other government channels.
It gets tedious listening to non-technical individuals with no idea how a technology operates, touting it as the best thing since sliced bread. It reminds me of the play "The Emperor's New Clothes."
A non-technical and politically motivated former FCC director Michael Powell, and commissioner Susan Abernathy have begun possibly irreparable harm to the nations precious HF spectrum pushing BPL, pushed costly HDTV on Americans, and are in the process of ruining the AM broadcast band with the hash and interference of IBOC HD radio (in-band on-channel, but really in-band adjacent-channel because the stations jam two channels below and two channels above the transmit carrier channel) so that even AM clear channel radio stations will have mutual interference, and be unlistenable in vast parts of the country.
I sincerely hope that it isn't too late for the new and highly technically qualified FCC director to get things on the right track again.
We can do HF and broadband. Current BPL designs just aren't the way to do it.