Comet UHV-9 User manual

1
HF ( 3.5, 7, 14, 18, 21, 28MHz )
50MHz , 144MHz & 430MHz 9-Bands Antenna

s
For your safety :


Beforeassembling
cs
Parts Name Qty.
Main antenna (w/ extended element）1 set
L-3.5 Coil
7MHz Spare element φ1.5×550mm 1
4
Hex. wrench Opposite side 2 mm 1
Hex. wrench Opposite side 2.5mm1
【Features】
● s

●ft
e
ti


●Witrecghnistentvith
thentenn
● gegRS-tctence
succ
Externalview
(Exampleof9-bandoperation）
Frequency Band 3.5 MHz 7 MHz 14 MHz 18 MHz 21 MHz 28 MHz 50 MHz 144 MHz 430 MHz
Antenna Type       × 2
Gain   
Impedance 
VSWR 
Max. Input Power 
 
Connector 
Length 
 
Weight   
【Standardspecifications】
COMET Co., LTD.
 

    

UHV-9
MODEL
Tip element included
φ1.5×87mm14〜28MHz Spare element
L-7 Coil Tip element included
L-14 Coil Tip element included
L-18 Coil Tip element included
L-21 Coil Tip element included
L-28 Coil Tip element included
Note1. Spare elements for 3.5 MHz are not included.
Note2. Spare elements are longer than standard.
TttreJAPAN
trcret
gtrvn
1 set
1 set
1 set
1 set
1 set
1 set


2
Precautionsforhandlingandoperation
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




③
①










【】






















☆













②

3



Lock nut
Element bracket
Upper element
※Note
Lock nut
L-3.5 etc...
HF band coil

unfasten & remove
Notes on installa
stallingaconnectccconnector
ntenna.
ere diereneaconnected or maged.
rantenna base tfence. If it is used in a loosened state, it maown b
antenna or dropped bstrong wind.
Also, be sure to aradial or counterpoise tntenna base securelround area is
nt due to poor contact, VSen does not improve.
It is not necessarto connecoils.
Acoil rou want to operat
advantages of easier adjustment and less vibrantenna.
[HF band coil element moun�ng]
1) When using 4 bands
(1) Trnt to loosen it
and removrnt.
* Please keep it in a safe place.
(2) Screred HF band coil intnt seat
tt
☆rnt is screwed in a
nat it does not fall o.
2) When using 5 to 9 bands
ow set scrent brackeaer
(opposite side 2mm) and remove it frnt.
(2) Trnt to loosen it, and removrnt and lock nut
wakeep it in a safe place as it will not be used)
aracket intnt.
* Maave been inserted ant.
nt seat intnt and
tow set scre
element seat t
racket unnt bracket,
and tigtow set scre
aerte side 2.5mm) t
(6) Acr
ou want to use tracket
lock nut to secure it.
(7) Screcower fr
ou want to use intnt bracketen
to secure it.
※Note : Aow frcoil (3.5MHz or 7MHz)
tnt bracket will rra
rnt
Element bracket
Upper element
Side bracket
Hollow set screw

Hollow set screw


4


 
【UHV-9adjustmentmethod】





Caution



 



※：

 ()fo










※
※

 
 
 
 
 
 
 
 
 
 
 
 
L
Non
rccr
Srvcrc
TrFry rc 
rrVSvb
cyb ATATAT
by RSrcy 
by cr
nef
c
vr
r
Yc y
ryrr
・・・
rrb

crVScr
b c r
rrrrcr
cSr
rcrr
・bc 
bb yr
F

efev rVS
VSy cvti
r
vr
rvv
v
VSr
k

CF
coc
CF
coc









E

conneco
E
conneco

 

Fcnnoo
n
ecW

5
50,144,430MHz
☆Coil installa�on image and SWR characteris�cs example when using in 3 bands or 4 bands
It is possible to operate up to 9 bands by adding each HF band coil
to the side bracket.
 4 to 9 bands
 examples.
28,50,144,430MHz 21,50,144,430MHz

1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
21 21.225 21.45
Freq.(MHz)
SWR
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
28 29 30
Freq.(MHz)
SWR
28.5 29.5
28MHz Coil (L-28)
28MHz Tip element
Element length Approx. 75mm

Element bracket
Auxiliary element
Upper element 
50MHz choke coil

 

Bending mechanism
Middle element 



Element length Approx. 80mm

See the table on page 4 for the �p
element length L of each HF band coil.
Please note that depending on the
combina�on of each band coil, there are
bands that are difficult to improve SWR.
Same as the leftre

6
18, 50, 144, 430MHz 14, 50, 144, 430MHz
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
18.068 18.110 18.168
Freq.(MHz)
SWR
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
14 14.175
14.350
Freq.(MHz)
SWR
Element bracket
Upper element 


 


 









ere

7
7, 50, 144, 430MHz

3.5, 50, 144, 430MHz

1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
7 7.10 7.20
Freq.(MHz)
SWR
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
3.5 3.5375
3.575
Freq.(MHz)
SWR
Element bracket
Upper element 


 


 





 
 element

 
ere

8
21, 28, 50 144, 430MHz




18, 28, 50, 144, 430MHz




1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
28 29 30
Freq.(MHz)
SWR
28.5 29.5
1.0
1.5
2.0
18.068 18.110
18.168
Freq.(MHz)
SWR
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
21 21.225 21.45
Freq.(MHz)
SWR
1.0
1.5
2.0
28 29 30
Freq.(MHz)
SWR
28.5 29.5
☆Appearance diagram of coil installa�on and SWR characteris�cs example when using 5 bands ☆
Element bracket
Side bracket
50MHz choke coil

Lower element 


Middle element 





 




Same as the lere
Element bracket



 




9
14, 28, 50, 144, 430MHz 7, 28, 50, 144,430MHz






1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
28 29 30
Freq.(MHz)
SWR
28.5 29.5
1.0
1.5
2.0
7 7.10 7.20
Freq.(MHz)
SWR
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
14 14.175 14.350
Freq.(MHz)
SWR
1.0
1.5
2.0
28 29 30
Freq.(MHz)
SWR
28.5 29.5



Element bracket
Side bracket
50MHz choke coil
70cm band
Phase shier
Lower element



Middle element 





 




Same as the lere







Element bracket

10
3.5, 28, 50, 144, 430MHz 18, 21, 50, 144, 430MHz

1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
3.5 3.5375
3.575
Freq.(MHz)
SWR
1.0
1.5
2.0
28 29 30
Freq.(MHz)
SWR
28.5 29.5
1.0
1.5
2.0
440 445 450
Freq.(MHz)
SWR
1.0
1.5
2.0
145 146 147
Freq.(MHz)
SWR
1.0
1.5
2.0
50 52 54
Freq.(MHz)
SWR
51 53
1.0
1.5
2.0
18.068 18.110
18.168
Freq.(MHz)
SWR
1.0
1.5
2.0
21 21.225 21.45
Freq.(MHz)
SWR





Element bracket
Side bracket
50MHz choke coil
70cm band
Phase shier
Lower element



Middle element 









Same as the lere

Element bracket






