In message c33e8481-7f7b-4e45-ac70-9fb896ab6...@gmail.com, Neville Michie wri
tes:
We had a system of secondary radar called DME [...]
DME is still going strong, and is the main GPS-Backup over Europe
for air-traffic.
I do not know how shipping located themselves.
Possibly Omega...
--
Hi,I'm sure you know this, but using the handshake pins (RTS, CTS, DCD, DTR) Is
a good idea from the point of protection if someone plugs a standard lead in.
Use output pins if you are sending power out, input if sending in.
Robert G8RPI.
--- On Sun, 14/2/10, Richard W. Solomon
Hi,Yes DME is still going strong. Modern interrogators time division multiplex
between 3 or more ground stations, giving enough data for the navigation
computer to get a position fix. It's the one analogue system that looks like
it's got a future. It's compatible with the distance part of the
Thanks Björn,
The one that I first received was in horrible physical shape and I asked for a
replacement and the gentlemen on Ebay obliged for the cost of postage.
I additionally added reverse polarity protection internally with a 3A diode
from Pin 1 and the center pin of the 5 pin regulator
Stan, W1LE wrote:
Hello The Net:
About a year ago I asked CTS Knights that very question.
They said it was a custom unit and they would NOT divulge the specs.
They referred me to SRS, their customer.
So I talked with SRS and they would only sell me a complete FS700
rebuild service
for more
Looks like 40kW
What's that mean,
For those of us not familiar with those units, can you give that in the new
standardized USA government units of, CARS OFF THE ROAD. :-)
**
Hi
I wonder what just the electric bill is to keep a single chain (4
transmitters) up and running?
At 20.04 14/02/2010, Poul-Henning wrote:
http://phk.freebsd.dk/photos/L9007M/dscf0458.jpg.html
Looks like 40kW for a dualrated transmitter like Eidí
Possibly times 1.73, it's three phase. About 650
MW/h per year - 2500 MW/h for the chain. Approx. $250.000 ?
Real costs are not
Take a look at the poor (but commonly low) power factor.
Much more volt-amps are being delivered than used to do effective work
as kilowatts.
Power factor correction would be a money saver if saving money were an
objective.
Stan, W1LE Cape Cod
Poul-Henning Kamp wrote:
In message
Residential meters measure KW
Industrial meters usually measure KVARs along with KVAs delivered
and the utility bills for both.
There is usually a distinct economic factor to reduce KVARs
Stan, W1LE
J. Forster wrote:
Power companies charge for KVAs, NOT KVARs.
-John
=
On 2/14/10 12:54 PM, J. Forster j...@quik.com wrote:
Power companies charge for KVAs, NOT KVARs.
-John
=
Take a look at the poor (but commonly low) power factor.
Much more volt-amps are being delivered than used to do effective work
as kilowatts.
Power factor
On 2/14/10 1:05 PM, Stan, W1LE stanw...@verizon.net wrote:
Residential meters measure KW
Industrial meters usually measure KVARs along with KVAs delivered
and the utility bills for both.
There is usually a distinct economic factor to reduce KVARs
Stan, W1LE
The last place I worked
That's no true, at least in my country. The industrial
consumer is charged for reactive power. We are therefore
forced to correct our power factor (cos fi).
Antonio
CT1TE
Quoting J. Forster j...@quik.com:
Power companies charge for KVAs, NOT KVARs.
-John
=
Take a look at
That's more in line with what I've seen... billing for KVA plus a penalty
for high KVARs.
Interestingly, last seen, the giant wound-rotor synchronous motors at the
Bitter National Lab got a rate reduction for overexciting the rotors, so
they look like capacitors, rather than inductors.
-John
In my FE5680, I find that the trimpot for frequency adjust at one end
4.4V. The upper and lower voltages are 4.4 and 5.2 approx.
Does this mean it is at the end of its life?
There is a 4750 Resistor connected to the low end of the trimpot whose
value can be reduced
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