Yagi YP-3 User manual

Super Antennas
By Vern Wright W6MMA
YAGI Portable Sys.
3EL. 6 Band YAGI
20, 15, 17, 12, 10, 6M
Model YP-3
Antenna Modeling
By Mike Staal of M2

THE SUPERANTENNA YP3 6 BAND 3 ELEMENT YAGI by Vern, W6MMA
Congratulations. You have just received a light-weight, extremely flexible beam
antenna designed for field applications by the QRP operator and others. The an-
tenna provides forward gain and directivity on all band 20M through 8M using and
ingenious combination
of parts that you adjust in the field with almost no tools.
When placed on a common push-up or similar mast at least 20 feet tall, the an-
tenna will provide the benefits
of directional reception and transmission. Yet you
may carry the antenna
in a 3 foot long bag with great ease as you move from
home to field and back again.
In operation, the antenna expands to a maximum
side to side width
of about 220 inches and a maximum length of less than 120
inches. The estimated power limit
of the antenna is 500 Watts.
WHAT IS THE SUPERANTNENNA FIELD YAGI?
The field Yagi is a 3 element Yagi optimized within its design for use on a wide
range
of frequencies. The Yagi 3 element design provides wide bandwidth on
each band for each field adjustments. You only need to set and measure the ele-
ment lengths and coils according to the instructions for each band You may even
vary the recommended dimensions for special circumstances and the instructions
will provide you with some guidelines.
For 8 meter operation, the boom must be shortened and the elements greatly re-
duced
in length but it is now a full size Yagi with good gain and FIB on the bottom
of the band 50.0 to 50.5 mHz. CW operation is 50.0 to 50.100 normally. 50.110 is
the international SSB and
CW calling frequency. 50.125 is the beginning of the
stateside phone band. Normally SSb contacts inside the USA are not done below
50.125. The 8m beacon band is 50.0 to 50.080.
On 10 meters you have a full size yagi that covers the bottom 1 mHz with one
setting. Boom length is set to maximum and no coils are required. Gain and FIB
are excellent.
On 17 and 12 meters mid element coils are used to resonate the elements and
the antenna will cover the full amateur band. You will experience good gain and
FIB on both bands.
20 and 15 meters are much wider bands, therefore the coil loaded element re-
quire two settings per band. The gain and FIB on 15m is close to that
of a full
size Yagi. On 20m the reduced size
of the antenna for portable work will provide
good directivity and FIB offering improved communications over a dipole at the
same height.

YP3 SUPERANTENNA ASSEMBLY DETAILS 9-9-08
TOOLS REQUIRED: Measuring tape, 1/2 nut driver; end wrench or socket.
Prior to assembly chose the band you intend to operate.
1. Layout the boom sections and assemble using the DIMENSION sheet as a
guide for position.
2. Layout the elements sections by length and position as shown the DIMENSION
sheet.
Now begin threading the element sections together. The large coils are used
only on 20M. Use a tape measure to set the exposed length
of each element
section. TIP: If you plan on using the same band over and over, mark the
dimension with a permanent felt pen marker and note the band (20m) next to
the marks. This will really speed up reassembly at the next site.
3. Continue assembling the sections until you get to the 1/4" diameter rod tips. Use
a tape measure and set each tip pair to the correct length.
4. The Director element halves and the Reflector element halves simply screw into
the center mounting block at each end
of the boom. Be careful to place the
reflector elements at the correct spacing to the driven element.
5. The driven element Matching device is a HAIRPIN. Each 1/8" brass hairpin rod
has a 3/8' ring lug at one end. Insert the threaded butt of each Driven element
half through the ring lug and then screw it into the center feed block. Align the
rods parallel with the boom and install the shorting rod
on the two hairpin rods.
Set it to the proper length for the band you have chosen.
6. Plug in the banana jack to BNC adapter, attach your feed line and mount the
antenna on an appropriate mast as high as possible. If the antenna is placed
15 to 20 feet above ground, the best match should be very close to center
of the
band or band segment you have chosen. Small adjustments to the driven
element tips should bring the match to the desired frequency.
7. If large frequency shifts are required, find the frequency where the antenna is
working properly like 28.4 mHz. Divide that frequency by the new frequency.
28.4/29.4 = .966. Measure the element half length, say 98", and multiply
98x .966 = 94.668 (round off to 94.75) and adjust each element tip to achieve
the new element half length. Do this to all 3 elements. Make small
improvements
in frequency and VSWR by adjusting the Driven Element tips
slightly.
Don't be too concerned about a VSWR
of 1.5:1 or less. Your radio should handle
this with ease and spend time on the air having fun
... enjoy!

---- -----------------
YP3 QUICK ASSEMBLY GUIDE
DIRECTOR EXP. TIP
-T
1/4x23-1/8" CW
1/4x22-1/2" PH
16"
1"!;~~M:~:~~~~i~~~~~~~~i~~: TIP ~!~:~r:!~
DIRECTOR
t 103-5/8"
CW
107-1/8" CW 104-7/8" CW
103" PH
105-1/2" PH 104" PH
ELEMENT SPACING FOR 20M TO 10M
REFLECTOR SPACE 71"
DIRECTOR SPACE 64-1/2"
3.62 uh
.. coil
REFLECTOR EXP. TIP D.E. EXP. TIP DIRECTOR
EXP. TIP
1/4x25-3/8"
1/4x24"
1/4x28"
J [~8;~~~~~s i------=-;cc--
16"
REFLECTOR
DRIVEN ELE.
DIRECTOR
108" 105-3/8" 104"
12"
DIRECTOR EXP. TIP
1/4x14-1/2"
DIRECTOR
72-1/4"
3.62 uh
['1 1/2x2" coil
DIRECTOR EXP. TIP
1/4x1-1/8"
~ I.15/~;;"METE::-'_~ ;~~;:!:~PTI~1~~~:~:'P
DIRECTOR
58-7/8"
REFLECTOR EXP. TIP D.E. EXP. TIP DIRECTOR
EXP. TIP
-r
,_el I-' --------- t-=-====::=::::~';UT
1/4x17 -1/2"
1/4x26-1 F2" 1/4x20-3/8"
5/8x30" 1/2x27" 3/8x22"
8"
REFLECTOR DRIVEN ELE.
DIRECTOR
----L-
108" 101-7/8"
99"
10 METERS
REFLECTOR EXP TIP D.E EXP_ TIP DIRECTOR
EXP. TIP
'1IiI- --
1/2x23-1/8" 1/2x18-3/4"
T D
5/8X30" 1/2x26-1/2"
12" REFLECTOR DRIVEN ELE.
DIRECTOR
6 M
58" 54-1/8"
50-114"
-1
I
__
REFLECTOR SPACED 54"
YP3QUICK
M.STAAL
II'
DIRECTOR SPACED 45"
4-18-08

YP3-20M VSWR I GAIN CURVE
GAIN CW" GAIN PHONE
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YP3-17M VSWR I GAIN CURVE
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18.060 18.080 18.100 18.120 18.140 18.160
18.180
2017YP3C M. STAAL 1-10-08

--
l
I
YP3-15M VSWR I GAIN CURVE
2.0
V
S
W
R
1.5
1.2
2.0
V
S
W
R
1.5
1.2
21.000 21.300 21.400
YP3-12M VSWR I GAIN CURVE
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24.890 24.900
24.920 24.940
24.960 24.980
24.990
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1512YP3C M. STAAL 1·10·08

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VP3-10M VSWR / GAIN CURVE
2.0
v
S
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1.5
1.2
2.0
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28.000 28.200 28.400 28.600 28.800 29.000
VP3-6M VSWR / GAIN CURVE
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50.00 50.100 50.200 50.300 50.400 50.500
____ ~ 106YP3(;_.fv1..sTAA~1:10.08 JI

9-9-08
PARTS LIST:
DESCRIPTION OTY
BOOM CENTER SECTION, 1-1/4 x 30" 1
BOOM MID SECTION, 1-1/8 X
3D" 2
BOOM END SECTION 1 X 30" 2
INNER ELEMENT SECTION 5/8 X
3D" 6
IVIIDDLE ELEMENT SECTION, 1/2 X 3D" 6
fl fMFNT OUTER SECTION, 3/8 X 22" . .,,,,,,,, .. ,,,, 6
ELEMENT TIPS, 1/4 X 3D" ROD 6
SHORT ELEMENT TIP,
1/46" ROD 6
HEX NUT,
1" 6
COIL, 20M 7 Uhy 6
COIL, 17M, 15M & 12M, 3.5 Uhy 6
DRIVEN ELEMENT CENTER INSULATOR 1
HAIR PIN RODS 1/8" X 16" BRASS 2
SHORTING BAR, 2-1/2" X 1/4" ALUM 1
BANANA JACK TO BNC CONN. ADAPTER 1
BOOM-TO-MAST PLATE, 3 X 4 X 3/16" 1
BOOI\II CLAIVIPS. 1-1/4" 2
HARDWARE
U-BOL T, 1-1/2" 2
NUTS, 5/16-18 SS 4
THUMB SCREWS
(4 EXTRA) 16
SPRING CLIPS, BOOM ASSEMBLY INSTALLED 4
TAPE MEASURE,
12 FOOL 1
ASSEMBLY MANUAL 1
SUPERANTENNAS
212 Mariner Circle
Lincoln CA 95648
Email: [email protected]