MODEL

Element(A),(B),(C)and (D)

CA-52HB4HB9CV type 4element Beam antenna
for 50～53.5MHz

23

Instruction Manual

Thank you for purchasing our product.

323200
1050

2560

750

Boom A

2610
2720

600
Sh
Staonrt-Brac
dard ket
Position

23

CenterElement

32
28

126
Your Mast
or PoleSho
Sta rt-Br
nda ackrd P etosit
ionReflector【Features】

1. Compact and lightweight design for DX transmitting use
2. HB9CV extented 2 Element Beam Antenna with high gain
3. Heavy-duty with stainless steel screws※Stretch the self-fusing tape two

Black 30Check all parts are included,
according to the parts list.

1030【Parts List】

lights.

Parts Name
1254MHz

52MHz0゜

Directinal Pattern

1.0
2.0
3.0
4.030゜

6.0
8.0
1060゜152090゜
2010180゜120゜150゜! Precautions for Installation● Choose a safe place to erect this antenna, complying with the laws andregulations in your country.
● Be sure to tighten and waterproof all screws, nuts and bolts.

● Do not erect this antenna near any overhead wires, steel towers, buildings
or any other obstacles.

3456
789101112131415161718192021222324252627282930313233

Boom A
Boom B

φ25 × 1625 mm
φ25 × 1625 mm(with a hole for U-Bolt)
φ9.5 × 1010 mm
Element(A)φ9.5 × 1035 mm
Element(B)φ9.5 × 1090 mm
Element(C)φ9.5 × 1215 mm
Element(D)
φ11 × 600 mm
Center Element
Regulating Rod（1）with SO-239 Connector
Regulating Rod（2）Rod without Connector
Phase Line
with terminal
aluminum
Short-bracket
Element-holder A aluminum
Element-holder B aluminum
Backing plate
stainlessFixing bracket
stainless
M6U-Bolt
Zinc Plating
Boom JointM6×40
M5×70
Pan-head Screw M5×55 preinstalled with
M5×25 Regulating Rod(2)
M4×12
M3×16
for M5
Wing Nutfor M6
4 preinstalled withfor M5 Regulating
RodHex. Nutfor M4for M3for M6
2 preinstalled withfor M5 Regulating
RodSpring washer
for M4for M3Self-fusing tape*appearance and/or specification are subject to change.

19Qty.
1
122
224
1
1
1444
1
1
1
1222
148444484648150Ω Coaxial Cable(Optinal Accesory)

19

Note :Make sure to connect theblack-colored terminalson both ends of Phase-lineto Boom.

5827

1.Put your 50Ω coax cable into CA-52HB4 SO-239 Connector, and check SWR.
With a high SWR reading, you have to re-adjust this antenna

11S
3Stahort- 10nd Bra
ard ckPo etsitio

2.When adjusting center frequency, move a short-bracket on the radiator.
fo becomes lower when moving short-bracket inward. (see the right fig.)
If not SWR becomes lower, try to adjust a short-bracket on the reflector.
*Move the antenna to a different mounting location when SWR stays high.

nRadiatorfo:Lower

Tun
Changes in the Frequency
eApprox 50kHz /cm
Center Frequency
adjustable range : 50.4 – 51.4MHz

25! 【Precautions for operating】● Check if the Cable Connector fits into the Antenna Connector.
● Keep children away from this antenna, especially while transmitting.
● Stop the use of this antenna immediately if you see the slightest trouble.
● DO NOT use this antenna out of spec.
● DO NOT use this antenna without element or with extra element.
● Never attempt to perform modification by yourself.
● While lightening, DO NOT touch this antenna.
Remove the radio, antenna and/or cable etc from devices.
Also check SWR after lightening.

2231【How to adjust】

3.Tighten each screw and bolt to lock the antenna into its newly
adjusted position.
*Use backing plate, brackets and/or U-bolts etc when mounting
this antenna to your mast etc.

times longer and wrap it to the jointof connectors for waterproofing.

M-J
Connector

Phase line

26
30

high places is highly recommended.

Main Beam

521● Wearing a safety hat and a life line during installing on a roof top or any210゜2628Black240゜

Holes for U-Bolt

30! Precautions for assembling【Specifications】
1.8● Frequency : 50 – 53.5MHzSWR● Gain : 10.4 dBi
1.5● F/B : 19dB or more
1.4
1.3
● Half-power angle : approx 54°
1.2● Input Power : 200W(FM)1.1
1.0● Impedance : 50Ω
50MHz● V.SWR : 1.5 or less at 50 – 53.5MHz● Connector : SO-239 (M-J) type330゜● Turning Radius : approx 2.22m● Mounting Mast Diameter : φ25 – 62mm300゜● Max Wind Survival : 30m/sec
2● Wind Load : approx 0.054m● Boom Length : approx 3.25m
270゜● Length : approx 2.97m● Weight : approx 2.1kg (antenna body)①,②boom alignment position

139● Do not erect this antenna near any electrical power lines and/or street

20
29
25

7310

30

724

Boom B

117

2
Element(A),(B),(C)and (D)

718

5

Boom Assembly figure

Main BeamRadiator

2970

7

Element Assembly figure

2nd Director

1st Director

1.Assemble first/second directors, radiator and reflector with each twoelements(A, B, C, D)
First Director length : 2610mm / Second Director length : 2560mm
Radiator length : 2720mm / Reflector length : 2970mm
2.Assemble other parts, according to the below fig.
*Short-bracket on radiator and on reflector ; Assemble both in a same way.

28

For your safety :Read this manual carefully for proper handling and operation before using.
Keep this manual in a safe place for future reference.
1400【How to Assemble】

fo:Higher

2911514162
Your Mast
or Pole4-18-2, Tsuji, Minami-ku, Saitama City, Saitama-Pref 336-0026 JAPANTEL: +81-48-839-3131 FAX: +81-48-839-3136
COMET CO.,LTD. URLhttps : //www.comet-ant.co.jp

6th edition.2022.05.27
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