Thread: Yagi question
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Old January 22nd 07, 06:37 AM posted to rec.radio.amateur.antenna
Nelson Blaha Nelson Blaha is offline
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First recorded activity by RadioBanter: Dec 2006
Posts: 10
Default Yagi question

Ok, here's what I tried. I cut notches in that 4' piece of PVC and cut
clotheshanger wire to the lengths found at this calculator:

http://www.csgnetwork.com/antennae3ycalc.html

This I stuck out my window on an aluminum pole (cinderblock walls are
bad). I'm suspicious of my wiring- I used very thin speaker cable to
connect a ground to the screws on my light switch plate, and to the
coax going into my radio. It doesn't perform half as well as my
current antenna- a mobile 5/8 dipole on the end of some eye-bar with
clothes-hanger groundplane radials. Guess I just need to wait until I
have some real coax, the speaker wire is probably the weak link here?
Maybe I was just pointing this yagi away from the station I was
listening to, I suppose it would be doing its job then!

Checking almost hourly for that license on the internet!

Nelson Blaha

On Jan 21, 11:06 pm, "Jimmie D" wrote:
"Bryan" wrote in messagenews:ItednTY6IOjx3inYnZ2dnUVZ_hmtnZ2d@gigan ews.com...



Jimmie D wrote:


Bryan wrote:
Nelson Blaha wrote:
I'm looking to build a 2m yagi, but I haven't got any money. Can I
make one out of aluminum coat hangers? I also have a 4-foot section
of
1" PVC pipe laying around, and glue, tools etc.


Nelson Blaha
Call-sign in the mail


Others presented good ideas. Ya know, an old TV antenna would make a
decent
yagi for 2m, and with people going to cable/satellite TV, you could
probably
find one for nothing or only a few dollars. Remove the elements you

don't
need, cut the remaining elements down to length, do a little rewiring
as
needed, connect your feedline, and you're good to go. If you want
vertical
polarization, redrill the boom-to-mast mounting holes 90° from
original.


I once did something similar with a 3 element 11m yagi... in about an

hour
or so including tuneup time, I turned it into a gamma-matched 6 element

2m
yagi. I used my VSWR-protected 2m rig's output indicator to indicate
proper
tuning by adjusting for maximum relative forward power.


Bryan WA7PRC


When we got cable in the neighborhood my wife was threateing divorce over
all the TV antennas I would pick up off the curb during trash day.


Jimmie


Hmm... I envision stacked arrays! ;^)
BryanI actually did very little with them. I didnt have my ticket yet. I put a

couple up in the attic for local TV that wasnt on cable. Still use them when
a storm takes the cable out.