Blue Star RC-2EL Mode d’emploi
“This Antenna conducts electricity Keep away from Power lines”
All ways use safe instillation practices, do not install any antenna on a mast
or tower with in 1 and ½ times the falling distance to any electrical lines!
BLUE STAR ANTENNAS
RED CROSS FREQUENCT YAGI
RC-2EL
INSTRUCTIONS AND USE
Your
Element YAGI allows for mounting in, Vertical or Horizontal Polarization.
POLARIZA ION
You must decide on a mounting position. Prior to assembling the boom.
FEEDLINE
We recommend you use the best quality feed line possible. his will allow the best possible
performance
Assemble the boom As pictured
IMPOR AN
Do not remove the red plastic retainers until you install an element in the opposing hole!
•Lay out the element in pairs according to size.
•Screw 1 of the element pairs into proper hole in the boom.
•Be careful not to cross thread the element.
•Remove the red plastic retainer and install the opposing element.
•ighten with 2 - 9/16 wrenches
•Do not over tighten and strip the threads.
•Repeat for each set of elements.
•Attach the Feed angle to the boom with the 8-32 SS Screws.
•Assemble the Gamma Feed as pictured.
Center Frequency A
B
46-47 12 ½” 7 ½”
50-51 22” 0”
The lengths of “A” & “B” should be
what ever it takes to get the lowest
SWR. On the portion of the band you
plan to work. Tune the antenna aprox
5-6 ft off the ground, away from metal
objects. SWR usually goes doe even
more when the antenna is elevated.
A & B both affect SWR
A effects the frequency
B Affects the SWR
MMANA-GAL v. 1.1.0.10
47.5 Red Cross 2 Element Yagi Blue Star Antennas
0
-10
-20
-30
-40
0
-10
-20
-30
-40
Ga : 11.55 dBi = 0 dB (Horizontal polarization)
F/B: 4.74 dB; Rear: Azim. 120 dg, Elev. 60 dg
Freq: 47.500 MHz
Z: 47.470 + j24.763 Ohm
SWR: 1.7 (50.0 Ohm), 12.7 (600 Ohm)
Elev: 17.3 dg (Real GND :5.00 m height)
MMANA-GAL v. 1.1.0.10
47.5 Red Cross 2 Element Yagi Blue Star Antennas
RjX
47.1 47.3 47.5 47.7 47.9
60.0
55.0
50.0
45.0
40.0
fo: 46.617MHz
50.0
40.0
30.0
20.0
10.0
SWR
47.1 47.3 47.5 47.7 47.9
2.25
2.0
1.75
1.5
1.25
SWR Z0: 50.0
GA FB
47.1 47.3 47.5 47.7 47.9
11.7
11.6
11.5
11.4
11.3
7.0
6.0
5.0
4.0
3.0
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