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Old August 27th 07, 06:07 PM posted to rec.radio.amateur.antenna
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Posts: 147
Default Is an Antenna Analyzer an FCC violation?


"Jimmie D" wrote in message
...

"Bob Miller" wrote in message
...
On Wed, 22 Aug 2007 21:37:06 GMT, "Thomas Magma"
wrote:

Hi,

I'm trying to determine if using an antenna analyzer is technically a
violation of the telecommunications Code of Federal Regulations. Typical
antenna analyzers inject a incident CW or sweeping CW to the antenna and
measure its return loss (reflection). Very few frequency bands have a CW
or
sweeping CW as their allowed modulation type. The way I see it is that by
using an antenna analyzer you are intentionally radiating an improper
modulation type that was allocated for the band and therefore you are in
violation of the Code of Federal Regulations.

Anyone have any thoughts on this topic?

Thomas Magma


I have an Oak Hills Research WM-2 QRP Wattmeter, which includes a
0-100 milliwatt scale.

With an MFJ 269 Antenna Analyzer hooked to the transmitter side of the
wattmeter, and an MFJ dummy load hooked to the load side of the
wattmeter, I get a reading of 3 milliwatts forward, 0 milliwatts
reflected.

Not sure whether the FCC is concerned with signals at the 3 milliwatt
level...

Bob
k5qwg


I think I remember a test conducted to see how much power it would take to
communicate across the United States coast to coast. They started out
making the contact at near legal limit and were still able to detect the
signal at just a few milliwatts. As I remember a few was less than 10. I
am sure this was part of a ham magazine article from many years ago.
perhaps someone else here knows the details better than I.


Jimmie


Last year, I contacted a ham station in New York state - he was running 10
milliwatts !!!! I was running 5 Watts.
The band --- Six Meters

Lamont

 
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