On Sun, 12 May 2013 16:34:53 -0400, "Ralph Mowery"
wrote:

"Jeff Liebermann" wrote in message
.. .

Yes, I know. A clean workbench is a sign of a sick mind.
http://802.11junk.com/jeffl/pics/home/slides/chain-saw-repair.html
It's currently not quite as messy, but it's close.

Looks like you have an antenna harness for phasing 2 meter antennas.

I guess you mean the Wilkinson power divider/splitter in the lower
left. It's not for phasing antennas, but for combining the signals
from two receive only 1090MHz antennas for ADS-B reception. The lines
are 3/4 electrical wavelengths long RG-6a/u because I couldn't find
any small diameter 75 ohm coax. That was a prototype I just threw
together to see if I really needed the 100 ohm resistor for receive
only. With low gain antennas, it's not needed. For high gain, where
impedance matching is more important, it's needed.

Is the
chain saw apart to put the co-phased antennas on ? hihi..

The chain saw has nothing to do with RF, unless you include using the
trees as supports for various HF antennas. In this case, the only
thing wrong with the saw was that the fuel line split and started
leaking. In order to replace a simple fuel line, I had to tear down
the saw completely. I used the occasion to also clean out the
accumulated crud, clean the carb, replace various filters, clean the
carbon out of the exhaust port, and do the usual tuneup. Right now,
the bench has two weed whackers torn apart. Since I took them apart
about 2 weeks ago, I don't remember which parts belong to which
engine. This should be interesting...




--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558