We just got Bigger and Better with OM Power, Yaesu and microHAM! (video)

We just got Bigger and Better with NEW Gear from OM Power, Yaesu and MicroHAM! Watch the video for more!

A year has gone by since the destruction caused by the Storm (“Hepheastion”), and finally, we have some amazing news to announce! Maybe it was all the effort and hard work we’ve put into rebuilding and upgrading the station, and maybe it was just pure good luck… maybe a bit of both, who knows… What is important is that Santa Claus visited us this year with a full bag of gifts!

It all began last November, when Sotiris Katsimaglis SV1BDO suggested we run a fundraiser between our members in order to buy an amplifier. Almost always this is how we manage to purchase equipment since the finances of our club are minimal, even for the maintenance of the station. With the amount raised, we intended to replace the expensive Icom PW1 Linear Amplifier, and then sell it. With the money from its sale we intended to buy two used transceivers, in order to modernize the station.

That was the plan anyway….

Many friends rushed to join in, and, to our surprise, a substantial amount was quickly raised (and we thank each and every one of them). However, it wasn’t enough on its own to finance the purchase of a brand new amplifier. Looking at the used market, we thought of turning to our good friend and supporter of SZ1A, Tibi Ferenec OM3RM of OM-Power. OM-Power had helped us again in the purchase of our first amplifier, offering us an amazing discount and actively supporting our station. Initially, Tibi did not have something available that we could purchase with the amount we had raised. This was in early December 2020, so we agreed to wait a bit, maybe our luck would turn…

A few days after the arrival of the new year and after the exchange of wishes, OM-Power finally had something for us. A OM2000HF Linear Amplifier in almost brand new condition, the exact same model that we already had and were extremely happy with, was available. With the help of OM-Power, we contacted our new friend Jef Claes DD2CW / ON4ACA who was responsible for the sale of the amplifier. After reviewing the SZ1A project and our effort to make a contest station available to everyone, in order to promote radio-sport/contesting and amateur radio, Jef provided us a quote for the amplifier.

Jef placed his faith in us, which deeply honors us, and immediately became part of our team! Believing in the SZ1A project he offered his support in many ways

Jef placed his faith in us, which deeply honors us, and immediately became part of our team! Believing in the SZ1A project he offered his support in many ways: In addition to facilitating the purchase of the amplifier at an excellent price which was within our budget, he donated his personal radio, a Yaesu FT1000MP MarkV Field, and, a Microham MKII keyer along with the necessary radio cable. Essentially together with the amplifier, he donated an entire station as a gift. All this in memory of his good friend Marcel Sterkens ON6UQ, who recently passed away and to whom the amplifier belonged. Jef and Marcel had a similar experience to that of the SZ1A, at SI9AM which, unfortunately, recently ceased to operate. So he considered SZ1A a continuation of their previous joint effort. This made him believe even more in our project.

If this is not Santa Claus, who is? Does Santa Claus really exist in the end? Or is it true what they say that “if you want something very much, the universe conspires to make it happen”?

In honor of his gesture, we have dedicated Operating Position Nr.3 as the “Marcel Sterkens ON6UQStation.

The new gear was packaged, shipped on a pallet and quickly left Belgium for Slovakia to OM-Power headquarters with the help of Dirk Martens ON3UN and Roger Stymans ON7TQ, whom we both thank very much.

Tibi and OM-Power tested the amplifier, gave the GREEN Light and after sending the money to Marcel’s family, the amplifier and transceiver made their way to the SZ1A. Jef had already shipped the MicroHAM MicroKeyer MKII earlier.

Commemorative plaque created & kindly donated by Harris Lekatsas SV3AQO

In honor of his gesture, we have dedicated Operating Position Nr.3 as the “Marcel Sterkens ON6UQStation.

On March 12, a long journey that began earlier this year came to a happy end. All equipment had now arrived. OM-Power had made sure to put in some extra goodies including two t-shirts and two hats with their logo, one for each OM-Power amplifier we have! We will probably get a third t-shirt soon…. hint-hint… hi! hi!

It is very important for us that fellow hams believe in us and that the SZ1A project inspires others. This is the true recognition of our work, our faith but also our perception of the Amateur Radio hobby (Ham Spirit!!!). We do not believe in misery and whining but in creation & innovation. This is what inspires and guides us.

Of course, we are now waiting for the Covid-19 Pandemic to pass and for Jef, Dirk, Roger and Tibi to come and visit us with their friends, to host them and to participate all together in a contest, in our unique SZ1A tradition: Round the clock BBQing and DXing/Contesting up in the mountains in nature with friends! What else could one want?!

Video of the Unboxing and Testing of our new OM Power OM2000HF, Yaesu FT1000MP MarkV Field and MicroHAM MicroKeyer-II

We must not forget to thank all the friends who, in difficult economic times, literally offered from their hard-earned finances, funds to buy the amplifier (in callsign suffix alphabetical order):

Our New Gear thanks to our Sponsors and Supporters
  • Cliff Sakalis SV1JG
  • Tasos Achtsis SV2AOK
  • Sotiris Katsimaglis SV1BDO
  • Dennis Drakopoulos SV1CDN
  • Kostas Karakostas SV1CQN
  • Andrew (Andy) Georgakopoulos SV1DKD
  • Stathis Maliakis SV5DKL
  • Kostas Stamatis SV1DPI
  • Vasilis Kontothanasis SV1DPJ
  • Costas J. Dovas SV4FFL
  • Vasilis Koukoutsis SV1JMC
  • Giannis Martsoukakis SV1PMQ
  • Theofilos Maglousidis SV2SCB
  • and two more friends who wish to remain anonymous.

With all that has been implemented at SZ1A lately (MOAS II, rotors, shack organization, taller towers, new antennas, new radios and amplifiers, etc.) we have even more reasons to stay safe, take care of our health and after all this situation we are experiencing, to be able to return to the “land of lotus eaters” for new adventures. Patience comrades!

Our New Equipment

OM Power OM2000HF Linear Amplifier

The OM2000 HF linear amplifier from OM Power is a heavy-duty powerful 2KW+ Contest Grade Linear Amplifier designed for all short wave amateur bands from 1.8 to 29 MHz (including WARC – bands) and all modes. It is equipped with a ceramic tetrode GU84b.

OM2000HF Linear Power Amplifier Features and Specifications

  • Frequency coverage: amateur bands 1.8 – 29.7 MHz including WARC
  • Power output: 2000+ W in SSB and CW, 1500+ W in RTTY, AM and FM
  • Driver Power: usually 40 to 60 W for full Output Power
  • Input impedance: 50 Ohm VSWR < 1.5 : 1
  • Output amplification: 17 dB
  • Output impedance: 50 Ohm unbalanced
  • Maximum output SWR: 2:1
  • SWR protection: automatic switching to STBY when reflected power is 350W or higher
  • Intermodulation distortion: 32 dB below nominal output
  • Suppression of harmonics: < -50 dBc
  • Tube: GU84b Ceramic tetrode
  • Cooling: Centrifugal blower
  • Power supply: 1 x 230 V – 50 Hz one phase
  • Transformers: 1 pc of toroidal transformer 2,5 kVA
  • Dimensions: 485 x 200 x 455mm (width x height x depth)
  • Weight: 28 kg
  • Protection circuits:
    • SWR too high
    • Anode current too high
    • Screen current too high
    • Grid current too high
    • Mistuning of power amplifier
    • Hot switching protection
    • Soft start for protecting your fuses
    • Cover interlock for power-on protection
    • Fully fused supply
  • Bar graph indications:
    • Power output
    • bargraph 50 LED
    • Reflected power – bargraph 20 LED
    • Current at screen ( Ig2 – bar graph 10 LED )
    • Anode voltage, anode current, tuning – bargraph 30 LED
  • LED indicators:
    • grid current ( Igl – 2 LED )
    • WAIT – preheating of tube (180 sec )
    • STBY– standby
    • OPR – operating condition
    • FAULT – failure, switching off for abt. 2 sec

YAESU FT-1000MP Mark-V Field HF Transceiver


  • Dual Receivers
  • Class A PA Operation
  • Integrated Shuttle Jog Control
  • 10 Pole Collins Mechanical Filter
  • Manual and DSP Auto Notch

  • 12 VDC Operation
  • Built-in AC Power Supply
  • Enhanced DSP
  • 13 Tuning Steps
  • Manual and Auto AGC

The legendary Yaesu FT-1000MP Mark-V Field is the latest member of the proud FT-1000 bloodline. The Field version brings this leading edge technology in a 100 watts, self-contained design. The AC power supply is built in. Or you may also operate this transceiver from 13.8 VDC. This radio also features a built-in high-speed automatic antenna tuner capable of matching loads between 16.5 and 150 ohms to better than 1.2:1 SWR. Our tranceiver has a 500Hz filter for CW/RTTY and a 2KHz filter for SSB. This radio includes the MH-31B8 hand mic.

microHAM microKEYER II – Radio-to-PC Multi-use Interface

The microHAM microKEYER-II is a highly integrated station controller which supports all modes. Regardless whether you do phone, digital modes or CW – the microKEYER-II supports you.

The integrated USB sound card has various advantages: first it does offer a much better signal to noise ratio than the most internal soundcards; second it has a much wider dynamic range. Both is very helful for improved decoding of weak signals. And additonally the internal soundcard remains free for it’s original purpose (system sounds etc.). And you have only one cable between the interface and your computer – everything, also the audio is carried by the one USB cable. The integrated USB soundcard of the microKEYER-II has two audio channels and supports both main and sub receiver of some radios.

Besides the well known features like a universal CAT/CI-V interface, sequencer control for PA and LNA keying, support for foot key PTT, connection for an optional PS/2 keyboard, K1EL WinKey chip for precise CW keying, the microKEYER-II offers some very interesting features:

The LC display is widely configurable and shows for example the sent data in CW and RTTY, or the current CW speed, or the current frequency of the transceiver. Very helpful while configuring the device and also during the DX work.

One additional CI-V connection, which works in parallel to the usual CAT interface, allows for a very easy integration of other Icom devices like the Icom PW-1 power amplifier. Even if the transceiver is not by Icom!

A further additional serial port (ILink) allows the seamless integration of other devices, like the SteppIR or Ultrabeam antenna controller or a automatic antenna tuner – very useful.

microHAM microKeyer II

microKEYER-II Features


  • Integrated USB soundcard with high dynamic range and excellent SNR for better decoding
  • Two audio channels for Main/Sub receiver
  • Newly designed microphone matching allows the use of nearly any microphone
  • two microphone connections supported at the same time (e.g. hand mike and headset)
  • Simplified control and selection of audio sources
  • Continuously adjustable microphone gain, separated for two microphones
  • Automatic selection of microphone
  • Output power of the soundcard sufficient to drive a headset, for Echolink, VoIP, Skype etc.
  • 2 Watt amplifier for connection of a monitor speaker
  • Separate volume control of the monitor for CW sidetone, DVK and AFSK
  • Display on the front shows status (recording, playback) of the soundcard
  • Automatic microphone muting when using digital modes


  • Sequencer control for LNA/PTT to switch a separate pre amplifier or receiving antenna
  • VOX support for PA keying
  • Direct support for QSK operation with PA
  • Digital VOX: automatic PTT keying when audio is sent over the soundcard
  • TX inhibit for hotswitch protection ad transmitting under critical conditions (transmit path not ready)
  • Faster (3ms) keying relay


  • K1EL Winkey Chip for precise timing of keying
  • Integrated, high level paddle debouncer/interface
  • Visual indication of keyer speed
  • Optional ‘paddle only’ sidetone
  • Display of transmitted CW characters
  • Integrated contest serial number
  • Supports PS72 keyboard or numeric keypad for memory recall

FSK & Digital

  • Low noise/high gain audio chain with independently controlled line amplifiers for unbeatable weak signal decoding
  • Automatic sound card line input select for digital modes
  • Transmitted data display (FSK RTTY only)

Other functions

  • Customizable, two line LC display with adjustable backlight
  • Separate power jack with power monitoring
  • Separate On/Off switch
  • CI-V output with simulated Icom ‘transceive data’ when connected to a supported radio allows use of IC-PW1 with non-Icom transceivers
  • Proprietary serial port (ILink) simulates antenna/tuner control protocols (support for SteppIR, Ultrabeam, antenna tuner)
  • FH-1/FH-2 or equivalent keypad for memory control
  • Uses the same DB37 cable sets as microKEYER



OM Power & Tibi OM3RM

and ALL of our Supporters

Please view our Sponsors and Supporters

Related articles

Building a 4-Element Yagi Antenna for the 6m Band

An email and a phone call with my friend Kostas SV1DPI were enough to convince me to share with you my experiences on building an antenna for 50MHz, hoping to motivate you and help you […]

Learn More

SKIMMERS – Receiving multiple RTTY & PSK signals

The increasing power of personal computers along with a plethora of programming platforms offer easy, fast and efficient development of radio signal analysis and processing software. Internet is a set of tools that unite all […]

Learn More

Analysis of Spots reported by the SZ1A Skimmer

You may have read a previous article of mine (Greek), here on SZ1A, about skimmers. How do we put all this into practice? How will this technology be useful in our daily lives? How can […]

Learn More

Leave a Reply