On Wed, 18 Aug 2004, Vince Stone wrote:
... The FCC, IMOHO, has botched the transition by trying to make everyone
happy and not really keeping the public informed. I can buy a cable ready
analog TV today, ...

That's a real understatement.

1) I have found that there are people who still didn't know (until I told
them) of the plans to turn off analog signals.

2) The fact that there are still so many regular (analog only) TV's on the
market today is a real problem.

You seem to have a lot of facts, but I don't believe the 0.21 microvolt
number. Are you sure it isn't millivolts?

--
"D. Stussy" wrote in message
g...
On Tue, 17 Aug 2004, Bruce Tomlin wrote:
In article . net,
"Mark Jones" wrote:
SNIP
At 15 miles and not counting atmospheric absorption (as I don't know the
frequency), you should get 0.21 microvolts of field strength for 800W ERP.
SNIP.

You seem to have a lot of facts, but I don't believe the 0.21 microvolt
number. Are you sure it isn't millivolts?

--
"D. Stussy" wrote in message
g...
On Tue, 17 Aug 2004, Bruce Tomlin wrote:
In article . net,
"Mark Jones" wrote:
SNIP
At 15 miles and not counting atmospheric absorption (as I don't know the
frequency), you should get 0.21 microvolts of field strength for 800W ERP.
SNIP.

Field strength in millivolts would present some interesting issues. I
haven't checked the numbers but microvolts would be the ballpark.

FYI, top posting has been unpopular on this group. While I prefer it I try
to accommodate the wishes of the majority rather than starting another
debate.

Leonard

"Joel Graffman" wrote in message
. ..
You seem to have a lot of facts, but I don't believe the 0.21 microvolt
number. Are you sure it isn't millivolts?

--
"D. Stussy" wrote in message
g...
On Tue, 17 Aug 2004, Bruce Tomlin wrote:
In article . net,
"Mark Jones" wrote:
SNIP
At 15 miles and not counting atmospheric absorption (as I don't know the
frequency), you should get 0.21 microvolts of field strength for 800W
ERP.
SNIP.

Field strength in millivolts would present some interesting issues. I
haven't checked the numbers but microvolts would be the ballpark.

FYI, top posting has been unpopular on this group. While I prefer it I try
to accommodate the wishes of the majority rather than starting another
debate.

Leonard

"Joel Graffman" wrote in message
. ..
You seem to have a lot of facts, but I don't believe the 0.21 microvolt
number. Are you sure it isn't millivolts?

--
"D. Stussy" wrote in message
g...
On Tue, 17 Aug 2004, Bruce Tomlin wrote:
In article . net,
"Mark Jones" wrote:
SNIP
At 15 miles and not counting atmospheric absorption (as I don't know the
frequency), you should get 0.21 microvolts of field strength for 800W
ERP.
SNIP.

On Mon, 23 Aug 2004, Joel Graffman wrote:
You seem to have a lot of facts, but I don't believe the 0.21 microvolt
number. Are you sure it isn't millivolts?

Yes. Measurement in microvolts is correct.

You will find this relationship:

A 1 watt (ERP) transmitter at 1 km has a field strength of 0.16 microvolts.

Why: FS (in volts) = power / (2 * pi * distance-in-meters ^ 2) in a vacuum.

That clearly does not account for atmospheric absorption, which would make the
signal weaker anyway (maybe even nanovolts).