Comet UHV-9 Instruction Manual Download Page 8

Page: 8 / 16

21, 28, 50 144, 430MHz

18, 28, 50, 144, 430MHz

1.0

1.5

2.0

440

445

450

Freq.(MHz)

SW
R

1.0

1.5

2.0

145

146

147

Freq.(MHz)

SW
R

1.0

1.5

2.0

Freq.(MHz)

SW
R

1.0

1.5

2.0

Freq.(MHz)

SW
R

28.5

29.5

1.0

1.5

2.0

18.068

18.110

18.168

Freq.(MHz)

SW
R

1.0

1.5

2.0

440

445

450

Freq.(MHz)

SW
R

1.0

1.5

2.0

145

146

147

Freq.(MHz)

SW
R

1.0

1.5

2.0

Freq.(MHz)

SW
R

1.0

1.5

2.0

21.225

21.45

Freq.(MHz)

SW
R

1.0

1.5

2.0

Freq.(MHz)

SW
R

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

70cm band Phase shi�er

Lower element

(φ5×L 310mm)

Element ﬁxing screw

Bending mechanism

Middle element

(φ4×L 405mm)

Feeding sec�on

21MHz Coil (L-21)

21MHz Tip element

Element length Approx. 80mm

Tip element ﬁxing screw

Upper element (φ4×L 45mm)

28MHz Tip element

Element length Approx. 75mm

28MHz Coil (L-28)

Same as the le

� ﬁgu

Element bracket

18MHz Coil (L-18)

18MHz Tip element

Element length Approx. 75mm

Tip

element ﬁxing screw

28MHz Tip element

Element length Approx. 75mm

28MHz Coil (L-28)

Summary of Contents for UHV-9

Page 1: ...By using a pipe moun ng base RS 215 etc it can be easily installed on a fence such as a balcony 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 Loading 1 4λ 1 4 λ 1 2λ 5 8λ 2 Gain 2 15dBi 2 15dBi 5 5dBi Impedance 50Ω Unbalanced VSWR Less than 1 5 Max Input Power 120W SSB Connector PL 259 M Plug Length Approx 2 1...

Page 2: ...ccident or deteriora on and replacement due to long term use Please contact the store where you purchased the product It is manufactured under strict quality control but if it is damaged due to an accident during transporta on please contact the store where you purchased the product For any assembly method or other technical ques ons please contact your distributor Inspec on and maintenance If a p...

Page 3: ... it The auxiliary element is screwed in at the me of shipment so that it does not fall oﬀ 2 When using 5 to 9 bands 1 Loosen the hollow set screw M4 x 4 ﬁxing the element bracket with the a ached hex wrench opposite side 2mm and remove it from the element 2 Turn the lock nut of the auxiliary element to loosen it and remove the auxiliary element and lock nut in the same way as 1 Please keep it in a...

Page 4: ...r element aﬀect each other 2 In the HF band the total length is shortened by the loading coil so the usable bandwidth is narrow Adjustment is required with reference to the Element default length L correspondence table for each band See pages 5 to 16 for coil moun ng examples and SWR characteris cs of each band The fo se ng frequency is an example Set according to the opera ng mode Adjust it by ad...

Page 5: ...5 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 Tip element ﬁxing screw Element bracket Auxiliary element Upper element φ4 L 45mm 50MHz choke coil 70cm band Phase shi er Lower element φ5 L 310mm Element ﬁxing...

Page 6: ...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 φ4 L 45mm 50MHz choke coil 70cm band Phase shi er Lower element φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on 18MHz Coil L 18 18MHz Tip element Element length Approx 75mm Tip element ﬁxing screw 14MHz Coil L 14 14MHz Tip element Element...

Page 7: ...R 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 φ4 L 45mm 50MHz choke coil 70cm band Phase shi er Lower element φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on 7MHz Coil L 7 7MHz Tip element Element length Approx 503mm Tip element ﬁxing screw 3 5MHz Coil L 3 5 3 5MHz Tip element Element leng...

Page 8: ...z 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 70cm band Phase shi er Lower element φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on 21MHz Coil L 21 21MHz Tip element Element length Approx 80mm Tip element ﬁxing screw Upper element φ4 L 45mm 28MHz Tip ele...

Page 9: ...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 φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on 14MHz Coil L 14 14MHz Tip element Element length Approx 80mm Tip element ﬁxing screw Upper element φ4 L 45mm 28MHz Tip element Element length Approx 75mm 28MHz Coil L 28 ...

Page 10: ...10 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 φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on 3 5MHz Coil L 3 5 3 5MHz Tip element Element length Approx 503mm Tip element ﬁxing screw Upper element 28MHz Tip element Element length Approx 75mm 28MHz Coil L 28...

Page 11: ...4 350 Freq MHz SWR 1 0 1 5 2 0 21 21 225 21 45 Freq MHz SWR Side bracket 50MHz choke coil 70cm band Phase shi er Lower element φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on Upper element Same as the le ﬁgure Element bracket 14MHz Coil L 14 14MHz Tip element Element length Approx 80mm Tip element ﬁxing screw 21MHz Tip element Element length Approx 80mm 21...

Page 12: ...350 Freq MHz SWR 1 0 1 5 2 0 18 068 18 110 18 168 Freq MHz SWR 3 5MHz Coil L 3 5 3 5MHz Tip element Element length Approx 503mm Tip element ﬁxing screw 21MHz Tip element Element length Approx 80mm 21MHz Coil L 21 Element bracket Same as the le ﬁgure Element bracket 14MHz Coil L 14 14MHz Tip element Element length Approx 80mm Tip element ﬁxing screw 18MHz Tip element Element length Approx 75mm 18MH...

Page 13: ... 20 Freq MHz SWR 1 0 1 5 2 0 18 068 18 110 18 168 Freq MHz SWR 7MHz Coil L 7 7MHz Tip element Element length Approx 503mm Tip element ﬁxing screw Element length Approx 75mm 18MHz Coil L 18 Element bracket Side bracket 50MHz choke coil 70cm band Phase shi er Lower element φ5 L 310mm Element ﬁxing screw Bending mechanism Middle element φ4 L 405mm Feeding sec on Upper element 18MHz Tip element 3 5MHz...

Page 14: ... 0 7 7 10 7 20 Freq MHz SWR 1 0 1 5 2 0 14 14 175 14 350 Freq MHz SWR 7MHz Coil L 7 7MHz Tip element Element length Approx 503mm Tip element ﬁxing screw Element length Approx 80mm 14MHz Coil L 14 Element bracket 14MHz Tip element 3 5MHz Coil L 3 5 3 5MHz Tip element Element length Approx 503mm Tip element ﬁxing screw Element length Approx 80mm 14MHz Coil L 14 Element bracket 14MHz Tip element Side...

Page 15: ...p element ﬁxing screw 3 5MHz Tip element Element length Approx 503mm Side bracket 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 3 5 3 5375 3 575 Freq MHz SWR Middle element φ4 L 405mm 7MHz Coil L 7 7MHz Tip element Element length Approx 503mm Upper element φ4 L 45mm ...

Page 16: ...anging the moun ng posi on of each band coil Example of mounting each element View from above When opera ng in 9 bands the lateral extension of the 7 MHz band element becomes longer Please be careful about contact accidents Please note that some bands have diﬃculty in reducing SWR due to mutual interference between the bands For bands where SWR is hard to improve we recommend using an antenna tune...

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