Same Day Dispatch
Orders before 3pm
FREE DELIVERY OVER £50
UK Mainland Internet Customers Only
Click & Collect
From Northampton Counter

FREE DELIVERY OVER £50

UK Mainland Internet Customers Only

Sirio GPA 135-175  Mono Band Antenna
Sirio GPA 135-175  Mono Band Antenna
Sirio GPA 135-175  Mono Band Antenna

Sirio GPA 135-175 Mono Band Antenna

£49.99
+


Ref
32GPA135
Delivery
Free Delivery in UK Mainland
Band
Multi
Frequency RX
135 - 175 MHz


Sirio GPA 135-175 MHz Mono Band Base Antenna

The 'Sirio GPA 135-175' is a omidirectional low gain, mono band base station antenna. Suitable for land and marine service.

It works on the frequency range of 135-175 MHz by using the tuning diagram enclosed. The matching coil is DC feeded for a perfect protection from the static discharges. Sirio GPA 135-175 is made of non-corrosive aluminium and assembled on a very strong base of die-cast metal to get the maximun robustness and the best performance. Tuning is easy by following the attached directions.

 


Share Your Photos

Share a photo of your Thunderpole product and appear in our showcase. Make sure to tag your image with either @thunderpole_uk or #thunderpole on Instagram.

 


Ratings & Reviews

Be the first to Write a Review for this item!

Main Features

  • Base station antenna, Mono-band
  • Omnidirectional, Unity gain
  • Made of aluminium alloy 6063 T-832
  • Tunable by whip length adjusting
  • Side mast mounting allowed by optional bracket FT-2 code 2510004.00
  • P/N 2101601.00 GPA 135-175

Electrical Data

  • Type: 1/4λ ground plane
  • Frequency range: tunable from 135 to 175 MHz
  • Impedance: 50Ω unbalanced
  • Radiation (H-plane): 360° omnidirectional
  • Radiation (E-plane): beamwidth at -3 dB = 86°
  • Radiation angle: 0°
  • Polarization: vertical
  • Gain: 0 dBd - 2.15 dBi
  • Bandwidth at V.S.W.R. 2:1: 13 MHz at 135 MHz
  • V.S.W.R. at res. freq.: ≤ 1.2:1 at start freq.
  • Max. power: 300 Watts
  • Feed system / position: direct / centre
  • Connection: UHF-female

Mechanical Data

  • Materials: Aluminium, Chromed brass, Nylon
  • Wind load / resistance: 29 N at 150 Km/h / 180 Km/h
  • Wind surface: 0.03 m²
  • Height (approx.): 960 mm
  • Weight (approx.): 520 gr
  • Radial length (approx.): 520 mm
  • Mounting mast: Ø 35-40 mm

Main Features

  • Base station antenna, Mono-band
  • Omnidirectional, Unity gain
  • Made of aluminium alloy 6063 T-832
  • Tunable by whip length adjusting
  • Side mast mounting allowed by optional bracket FT-2 code 2510004.00
  • P/N 2101601.00 GPA 135-175

Electrical Data

  • Type: 1/4λ ground plane
  • Frequency range: tunable from 135 to 175 MHz
  • Impedance: 50Ω unbalanced
  • Radiation (H-plane): 360° omnidirectional
  • Radiation (E-plane): beamwidth at -3 dB = 86°
  • Radiation angle: 0°
  • Polarization: vertical
  • Gain: 0 dBd - 2.15 dBi
  • Bandwidth at V.S.W.R. 2:1: 13 MHz at 135 MHz
  • V.S.W.R. at res. freq.: ≤ 1.2:1 at start freq.
  • Max. power: 300 Watts
  • Feed system / position: direct / centre
  • Connection: UHF-female

Mechanical Data

  • Materials: Aluminium, Chromed brass, Nylon
  • Wind load / resistance: 29 N at 150 Km/h / 180 Km/h
  • Wind surface: 0.03 m²
  • Height (approx.): 960 mm
  • Weight (approx.): 520 gr
  • Radial length (approx.): 520 mm
  • Mounting mast: Ø 35-40 mm

Sirio GPA 135-175 MHz Mono Band Base Antenna

The 'Sirio GPA 135-175' is a omidirectional low gain, mono band base station antenna. Suitable for land and marine service.

It works on the frequency range of 135-175 MHz by using the tuning diagram enclosed. The matching coil is DC feeded for a perfect protection from the static discharges. Sirio GPA 135-175 is made of non-corrosive aluminium and assembled on a very strong base of die-cast metal to get the maximun robustness and the best performance. Tuning is easy by following the attached directions.

 


Share Your Photos

Share a photo of your Thunderpole product and appear in our showcase. Make sure to tag your image with either @thunderpole_uk or #thunderpole on Instagram.

 


Ratings & Reviews

Be the first to Write a Review for this item!





  • The HamKing SG-7900 is a pre-tuned mobile 2M/70cm 144/430mhz amateur band antenna is a high performance.
  • Here at Thunderpole we have a selection of SWR meters design to help fine tune your radio antenna to its optimum performance. Also available are power meters and matchers.
  • We have a range of Amateur radio base antenna fittings including T & K wall brackets, interlocking poles, U Bolts, etc.
  • Our range of HF, VHF and UHF Amateur Radio Amplifiers incorporates AM/FM/CW or a SSB mode switch. Please note this is for use on amateur radio frequencies only.
  • We stock a range of RG58U, RG58CU and RG218 plus red/black power cable & speaker cable for Amateur Radios per meter or roll.
  • High quality, high power Thunderpole Amateur Radio extension speakers with 3.5mm jack plugs to fit all radios.