HAM RADIO STATION OH8LQ

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HAM Projects

  • 3 kW LDMOS linear amplifier
  • LDMOS amplifier control board
  • DC protection board
  • Input attenuator and protection board
  • LDMOS RF-pallet
  • GU84 autotune amp
  • 80 m Shorty Yagi
  • Winkeyer + SO2R box
  • Skimmer divider for FTdx101MP
  • 2x BLF188 HF-linear amplifier
  • 2x BLF188 HF-linear amplifier (rebuild 2026)
  • 4 Square Phasing box
  • Galvanic isolator (kalvanoitu erotin;))
  • SONY WH-CH720N headset
  • BPF project
  • Relay box heater
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LDMOS RF-module

Details
Written by: Jari Ojala
Category: Uncategorised
Published: 20 July 2023
Hits: 27529

 

LDMOS RF-pallet

 

ScreenHunter_129_01.png

RF-module schema

RF-module PCB

BOM

 

Older version, minor modifications at v3.1

PCB available, ASK!

 

LDMOS power switch

Details
Written by: Jari Ojala
Category: Uncategorised
Published: 12 July 2023
Hits: 25870

Power switch

 

 

Power switch BOM

Power switch schema

PWB is available ask!!

Lisättävä hilalle suojazenerit!!!

Cut of time. Cut of point is 4.1 V.

 

 

LDMOS Control board

Details
Written by: Jari Ojala
Category: Uncategorised
Published: 12 July 2023
Hits: 30619

LDMOS control board

 

LDMOS_control_v4.png

 

 

Control board BOM 

Control board schema 

 

User interface

LDMOS power switch

Details
Written by: Jari Ojala
Category: Uncategorised
Published: 12 July 2023
Hits: 20511

Power switch

 

 

Power switch BOM

Power switch schema

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VIDEO

  • Tower works at OH8LQ
  • Solder LDMOS
  • 42 m tower goes up
  • Ice droppin by drone PART I
  • Ice droppin by drone PART II
  • LDMOS amplifier GUI

Other projects

  • Solar power plant
  • 22 kW diesel generator project
  • Forest trailer
  • Harbor trailer

Presentations

  • LDMOS linear amplifiers (Finish)
  • SDR and CW Skimmer
  • OH Contests (kesäleiri 2022)