RadioBanter - View Single Post - The Fed's Anti-Ham Trojan Horse

January 29th 05, 01:31 PM

In article . com,
writes:

N2EY wrote:

. . . .

For example, if you had a business that used an RF-based heatsealing
machine,
and the machine radiated RF that interfered with someone's radio
operations,
you'd be required to shield it so no harmful interference resulted,
or shut down.

'Scuse the silly nit-picking here but those unlicensed old open-cabinet
induction heat-sealing machines operated around 27 Mhz back when
licensed hams also operated on those freqs. If I recall it right
problem was that 11M was a shared band and us licensed types had no
legal bitch on heat-sealing machine RFI, it was live with it or go play
on some other ham band.

Yep - that was the old ISM band (industrial-scientific-medical). Remember
diathermy machines?

The problem was that those machines were often spectrally unclean. Harmonics
all over the place - including high band VHF mobile. And there was often nobody
in the plant who really understood how they worked or checked up on whether
they were still in the band.

knew an operation in the '60s that had a rather interesting visit from
Philadelphia's Finest because their machine had a harmonic on the dispatch
channel. Commissioner and later Mayor Rizzo was *not* pleased...

But eventually the FCC lowered the boom on the heat-sealing machines.
Then they tossed us out of the band and turned it over to the CBers.
Which at the time was (temporarily) another licensed service. Ah, the
webs "they" weave . . !

Yup.

btw, Chambersburg dumped their BPL proposal. See the ARRL website - local
opposition caused the town fathers to look elsewhere for broadband.

73 de Jim, N2EY