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power amplifier

Power amplifier, behind which there is no other amplifier is called in amateur radio terminology the output stage. The output stages use both bipolar and LDMOS transistors, but even in the 21st century, electronic output stages are very popular.

Čajka na oblohe
DXbulletin VHF+SHF 

Summer radio amateur expedition SP7VC to Scandinavia 2025

7. July 2025 om0aao 0 Comments 6m, antenna, DX, Icom, power amplifier, meteor scatter, vkv, yaesu

  As in previous years, Also this year, MEK SP7VC plans with his partner Kate SQ7oyl a summer residential expedition

Read more...
Podvodný svet
Digital modes DXbulletin LF+HF 

VP2vi the British virgin islands

10. April 2025 om0aao 0 Comments 6m, antenna, DX, power amplifier, kv, QSL, yaesu

Ben (DA1DX, ex-DL6FBL), Win (x9el.,2x7el.DK7ZB), Andrew (DL8LAS) a Lutz (DM6EE) - All active members of Bavarian Contest Club - will broadcast

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Svazijsko
LF+HF 

3DA0DL Kingdom of Eswatini

29. October 2024 om0aao 0 Comments antenna, CW, DX, FT8, power amplifier, kv, QO-100, QSL, RTTY, SSB

The team consisting of DK1BT Manfred, DL4WK Wolf, DL6SAK Annette and DL7BO Tom are already active from the Kingdom of Eswatini (former name

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ICOM IC-7760
Reviews Projects, Mods, Fixes and Add-on's 

IC-7760

26. August 2024 om0aao 0 Comments CW, FT8, Icom, power amplifier, kv, receiver, SSB, TCVR

At the Tokyo Ham Fair, Icom presented the new KV+6m transceiver in the high-end category. Conceptually, the IC-7760 consists of a removable front panel and a body,

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CQV-SWR120 digitálny merač výkonu a PSV
LF+HF Reviews 

CQV-SWR120 power meter and PSV meter with alarm

3. January 20239. January 2023 om0aao 0 Comments antenna, antenna tuner, power amplifier, kv, amplifier

The CQV-SWR120 is a digital power and standing wave ratio meter (PSV) in the range of 1.8MHz-54MHz. Full color 240 x 240 pixel LCD display

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Vypracované odpovede pre rádioamatérske skúšky
Ham information Projects, Mods, Fixes and Add-on's 

Elaborated answers for radio amateur exams

4. July 202227. March 2023 om0aao 7 Comments antenna, antenna tuner, CB, CW, power amplifier, kv, preamplifier, receiver, SSB, TCVR, amplifier

When preparing for radio amateur exams, it is difficult for interested parties to obtain comprehensible documents, from which they would understand the issues of electrical engineering and radio engineering.

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Yaesu FT991
Projects, Mods, Fixes and Add-on's 

New bias source for HF transistor power amplifiers with bipolar transistors

15. February 20228. July 2022 om0aao 1 Comment power amplifier, receiver, SDR, SSB, TCVR, WebSDR

Having a good signal is a business card of a radio amateur. Having a good signal is a business card of a radio amateur, which years ago

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Zimbabwe vlajka
DXbulletin LF+HF 

Z22O Z21A Zimbabwe

7. February 2022 om0aao 0 Comments CW, DX, FT8, Icom, power amplifier, QSL, SSB

Zimbabwe flag 160 – 10m, CW, SSB, FT8, Zimbabwe flag.

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TU5PCT QSL
Digital modes DXbulletin LF+HF 

TU5PCT Ivory Coast 2022

13. January 202213. January 2022 om0aao 0 Comments antenna, CW, DX, FT8, power amplifier, QSL, RTTY, SSB

Trojica Petr OK1BOA, Petr OK1FCJ, David OK6DJ is preparing for the DX expedition TU5PCT. It is part of a successful S9OK expedition.

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MRF9180 VKV zosilňovač
Projects, Mods, Fixes and Add-on's VHF+SHF 

Amplifier on 144 MHz s MRF9180 / MRF186

15. September 202117. June 2022 om0aao 0 Comments power amplifier, vkv, amplifier

Cheap VHF Amplifier How to Increase Device Power at 144 MHz? One option is an LDMOS amplifier with MRF9180. Tieto

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Sao Tome
Digital modes DXbulletin Ham information LF+HF 

S9OK – Sao Tome 2021

16. June 202116. June 2021 om0aao 0 Comments 6m, CW, DX, Elecraft, FT8, power amplifier, QSL, RTTY, SSB, yagi

Petr OK1BOA, Petr OK1FCJ, Stick OK1CRM, Pavel OK1GK , Ore OK2ZA, Ludek OK2ZC, Karel OK2ZI and David OK6DJ are planning an expedition

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Hamradio discussion

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Include posts related to HF bands here (below 10m)

VHF discussion forum
Include contributions related to VHF bands here (from 6m upwards)

Projects, Mods, Fixes and Add-on's
Questions, answers and ideas for constructions, homebrew, equipment modifications

Miscellaneous Hamradio discussion forum
This includes posts, which cannot be included elsewhere…

Online swapmeet
Sale – buy – exchange – I donate radio and electronics

New topic

Selection of articles

  • Oscilloscope for PCOscilloscope for PC
    In categories: Ham information
    I need advice on choosing an accessory for a PC, which I would replace a large oscilloscope for space reasons. The difference between the analog ...read more
  • CQ WPX RTTY Contest 2022CQ WPX RTTY Contest 2022
    In categories: Contesting, Digital modes  CQ WPX Contest, RTTY
    The CQ World-Wide WPX RTTY Contest will take place on February 12-13 2022 starting at 00.00 UT on Saturday and at the end of ...read more
  • Results of the IARU Region 1 VHF Contest 2020Results of the IARU Region 1 VHF Contest 2020
    In categories: Contesting, VHF+SHF  contest, vkv
    We have recently brought unofficial results to the IARU Region 1 VHF Contest 2020 and we already have here thanks to Paľo OM5CM ...read more
  • OTC SARA Memorial 2022 CWOTC SARA Memorial 2022 CW
    In categories: Contesting, LF+HF  contest, CW, OM9OT
    On Sundays 11. September 2022 morning from 06,00 – 07,00 UTC will be the autumn telegraph part of the race, OTC Memorial ...read more
  • IOTA Contest 2009IOTA Contest 2009
    In categories: Contesting, LF+HF  CW, IOTA Contest, SSB
    Next weekend, 25.July from 12.00UTC to July 26 12.00UTC is held IOTA Contest 2009. IOTA stations and all other stations compete. ...read more

OM HAM of the Year

Year 2004
Grad.. Ing. Jaroslav Just
OM3TA, SK


Year 2005
Rudolf Karaba
OM3PC


Year 2006
MUDr.Harry Činčura
OM3EA


Year 2007
Grad.. Ing. Radoslav Gališ
OM6KW


Year 2008
Ing. Jaroslav Kubicek
OM1II


Year 2009
Jozef Ivan
OM3NA (in rememberence)
a
Peter Martiška
OM3PA


Year 2010
Anton Srnka
OM1AEG


Year 2011
Dušan Pavlík
OM2ADP

HF conditions


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Tags

6m 160m antenna antenna tuner callbook CB contest CQ WPX Contest CQ WW Contest CW diploma DK7ZB DX Elecraft EME FT8 Icom IOTA IOTA Contest Kenwood power amplifier kv meteor scatter N1MM OM9OT OM Activity Contest preamplifier receiver QO-100 QRP QSL remote station RTTY satellite SDR SSB SSB liga sub-regional SWL TCVR vkv WSJT yaesu yagi amplifier

RSS DX expeditions

  • Falkland Is: May 10-Jul 12, 2025 -- VP8DPD -- QSL via: EA5GL
  • Morocco: June 25-Christmas 31, 2025 -- CN2DX -- QSL via: F5LRL
  • St Pierre and Miquelon: Jun 28-Jul 14, 2025 -- FP -- QSL via: LoTW
  • Mozambique: Jul 5-11, 2025 -- C94rc -- QSL via: Club Log OQRS
  • St Helena: Jul 5-13, 2025 -- ZD7TIM -- QSL via: LoTW
  • Grenada: Jul 5-15, 2025 -- J38dx -- QSL via: LoTW
  • The Savior: Jul 6-13, 2025 -- YS3 -- QSL via: LoTW
  • Cyprus SBA: Jul 8-15, 2025 -- ZC4MK -- QSL via: G0kom
  • Benin: Christmas 8-Aug 6, 2025 -- TY5FR -- QSL via: LoTW
  • Belize: Jul 10-14, 2025 -- V31gt -- QSL via: W9HT

RSS Contest Calendar

  • QRP Fox Hunt
    0100WITH-0230WITH, Jul 11
  • NCCC FT4 Sprint
    0100WITH-0130WITH, Jul 11
  • Weekly RTTY Test
    0145WITH-0215WITH, Jul 11
  • NCCC Sprint
    0230WITH-0300WITH, Jul 11
  • K1USN Slow Speed Test
    2000Z-2100Z, Jul 11
  • SKCC Weekend Sprintathon
    1200WITH, Jul 12 to 2400Z, Jul 13
  • IARU HF World Championship
    1200WITH, Jul 12 to 1200Z, Jul 13
  • QRP ARCI Summer Homebrew Sprint
    2000Z-2300Z, Jul 13
  • 4 States QRP Group Second Sunday Sprint
    0000WITH-0200WITH, Jul 14
  • K1USN Slow Speed Test
    0000WITH-0100WITH, Jul 14

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CQ.sk

Thank you for visiting this portal designed for all radio amateurs from OM and OK.

We bring you current information from the amateur radio world, however, we do not want to be narrowly focused on one area, therefore, new articles from each circle will be added to these pages practically daily, which concerns us HAMs.

We would ask everyone, who can contribute their articles, ideas, stimuli, to be actively involved in building this portal. It's not a portal to those, what they created it for, but for all of you.

If you have any questions, please contact the administrator at: admin@cq.sk. Thank you and we look forward to meeting you at the band! 73 by OM0RX and OM0AAO.

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