15 June 2022

RGO ONE - New firmware 2.41A released

New firmware ver.2.41A for famous RGO ONE transceiver is available. CW waveform clipping and LPF hot switching problem when lower delay time (menu 41 trd) is selected is now resolved by Boris and his crew.

Files for software update are located in download section


CW wave form is now clean and not clipped by delayed switching of output LPF.

73 - Petr, OK1RP

24 May 2022

RGO ONE - Noise blanker (NB) option by Boris, LZ2JR

RGO ONE is classic super heterodyne analog conversion SSB/CW amateur transceiver with 9MHz single intermediate frequency. Optional noise receiver/ noise blanker (NB) unit is placed right after post RX mixer amplifier U12 on RF MIXER board. NB module detects short incoming pulses and produces blanking pulse which neutralize disturbing interference signal early in the receive path just before first 9MHz (roofing) filter. Unlike all modern transceiver's technology where digital DSP technology is in use – in RGO ONE all the signals are analog processed avoiding signal distortion and improving signal dynamic range.

It is known that performance will be most effective when noise pulses are short in duration and comparatively long in period. Characteristic types are those produced by automotive ignitions, home appliances, small DC motors, pulse noises from power lines and other man made devices. Noise with short periods and longer duration such as QRN, are less discernible by the circuits and consequently more difficult to eliminate. Optional NB board works on RX and its location is on RF MIXER board in your RGO ONE.

- Pulse bandwidth 7 ÷ 70 µSec 
- Threshold/sensitivity 10µV ÷ 220µV 
- NB insertion loss/gain +1.5db (±1db) 
- Input frequency IF 9MHz 
- IF bandwidth 130kHz 
- Noise gate type PHEMPT Ga-As SPDT switch 
- Noise gate isolation >85db

If you are going to install your new optional NB module then I am highly recommending to follow step by step the NB Operating and Installation manual linked bellow by Boris, LZ2JR.

Just few more pictures from installation procedures follows.

JP1 jumper removed in the center of picture

RF Mixer board after removing the shielding on the left

NB optional module properly inserted to pins header

Securing the board with supplied M3mm screw and lock washer

After installation of the optional NB board the 2.40A revision or higher firmware must be installed to the RGO ONE transceiver.

This software version implements new optional NB module features.
NB noise blanker/noise receiver optional board gives ability to remove pulse noises from man-made home/industrial appliances, electrical power lines etc.

QRN and other atmospheric noises with long pulse duration might not be suppressed effectively.

New menu entries added:

  1. Menu 35 nbP – Blanking pulse width 1 – 8 (7 – 70usec)
  2. Menu 36 thr – Gate threshold/sensitivity level 1 – 16
  3. LCD icon animation – NB icon can be lit on or off or fast blinking depending on NB module status
  4. Module auto-detect – enables new NB features only if NB option is installed in the radio.
New firmware version 2.40A – NB functions added for download here.

NB Operation & Installation manual is available for download here.

Contact Boris, LZ2JR for availability or pre-orders here.

73 - Petr, OK1RP

17 May 2022

RGO One vs YAESU FT-DX10 - little warrior on the battle field :)


today morning Boris, LZ2JR made an interesting comparison of the noise blanker performance in between his RGO One and popular Yaesu FT-DX10 transceivers. The newly developed NB option for his amazing RGO One transceiver is coming soon and it will be available and supported with latest firmware revision.

Look on the video and let me know back who won...


73 - Petr, OK1RP


04 May 2022

RGO ONE fights strong pulse spikes – Youtube DEMO

RGO ONE Noise Blanker (noise receiver) demonstration.

Input noise pulse spikes are simulated by Siglent arbitrary waveform generator.

Frequency 14MHz
Pulse signal duration 80 periods (sinusoids)
Silence duration 100 mili seconds
Input amplitude 0dbm (>600mV)

In other words injecting at receiver input very strong pulse spikes ~600mV, width 5.7uS, every 100mSec

Menu 35 selects blanking pulse width 1 – 8 from 7 to 70uSec
Menu 36 selects gate sensitivity (threshold) level 1 – 16

Noise blanker (NB) functionality will be added in new FW ver.2.40A. Check firmware updates section for this update that will be available soon. NB module is optional board that can be fitted on RF MIXER board.

Demo video is here:


There is simulation in real situation and how NB module interacts on useful receiving signal. Is there any artifacts of its action.. Please comment. For the test have been used the following stuff: Siglent waveform generator and Mini circuits two way signal splitter.


73 - Petr, OK1RP

RGO One - Excessive mic gain at lowest setting - mod by Boris, LZ2JR

RGO One - Excessive mic gain at lowest setting using QRP power level modification by Boris, LZ2JR.

If you realized the excessive mic gain on your RGO One even at lowest setting here is what Boris found after deep investigation and many tests... "Ok, then we assume got problem only on QRP levels. Probably this is related to individual voice characteristics. Since my voice is not so loud I am afraid I adjusted mic preamp to fit my own voice characteristics.

Here is what can be done:

1. Lift bottom cover and locate SSB GEN board (see the pic attached)

2. Place in parallel or replace R2 - 270kOhm with 100kOhm resistor (0805 case)... 

(Somebody reported even 27kOhm change works fine)

73 - Petr, OK1RP

08 April 2022

The MasterKeyer MK-1 by N0XAS

The MasterKeyer MK-1 breaks new ground in ease of operation. 

Six multi-color, LED illuminated pushbuttons give instant access to stored messages any of five banks -- that's 30 messages in all, for over 7500 total characters. The LED-backlit buttons change color to tell you whether a message is being sent or recorded. A large, smooth operating, solid aluminum speed control knob can be used to set your operating speed within whatever range you decide. The smooth, sine-wave sidetone lets you hear what you're doing at all times. Of course it can be muted, or turned up for room-filling sound ideal for code training and practice sessions. And commands to change options and messages can be sent from your paddle, or plug into your computer for easy, text-based setup!

The latest low-power embedded microcontroller technology is used to give you the features you want, with the ease of operation you need. Advanced operating modes such as message pause, auto-repeat (beacon), QRSS and HSCW are a snap -- and with future firmware upgrades, even more features are just a quick (and free) upgrade away!

Of course the MasterKeyer can be used as a top-quality, fully featured stand-alone keyer, with no computer or keyboard required. All the operating features you expect, and some you may not, are built in and ready to use. The built-in USB capability can add a whole new dimension to your operating! The USB host connector -- the only one on any keyer, anywhere -- can be used to load new updates directly from a USB FLASH drive, without using a computer. You can also save all operating parameters and memory contents to a FLASH drive, so you don't risk accidentally losing your settings. Edit the simple text file if you wish to suit your exact needs. The ability to save and load the entire configuration makes this keyer perfect for clubs and contest stations! If multiple operators use the same keyer, just plug in a FLASH drive and load ALL your own settings and memory messages in seconds. Of course, the same feature can be used to "clone" your settings from one keyer to another if you need stations set up the exact same way.

This keyer is presently offered only in fully assembled and tested form. The enclosure is top quality, rugged aluminum with a textured black powder coat finish. Silkscreened legends mark all operating controls and connections. All documentation is on a CD-ROM, as well as software drivers for Windows PCs (drivers are already built into Mac and Linux systems). A power cable is included to connect to your power source.


Beautiful metal cabinet with rugged, textured powder coat finish and screen printed legends

Knurled, gloss finish solid machined aluminum speed adjustment knob with indicator line

Meets FCC Class B limits for radiated and conducted emissions

Morse code keying from a single or dual lever paddle

Straight key input for manual keying

Emulation mode for K1EL Winkeyer commands has been added to Version 1.20 and newer. The MK-1 now works with a wide range of logging and contest software. If it supports the Winkeyer, the MK-1 will work fine.

Support for Morse from a USB keyboard! Includes memory record & playback.

Optically isolated Keying and amplifier/PTT outputs rated for 400V at up to 200 mA (Key Out) or 400 mA (Amp Out) - key solid state or tube rigs!

Amp keying lead and tail times adjustable

Smooth sidetone with easy-to-use external volume control can be muted or left on

Numerous keying modes supported

Curtis Mode A

Curtis Mode B (with adjustable paddle timing)

“Bug” mode – automatic dots, manual dashes

Ultimatic mode

Straight key or “Cootie” mode

Dot or dash priority

Adjustable paddle timing lets you "tweak" the paddle response to suit YOUR preference!

Thirty memory slots available in five banks of six messages each

Each message can be up to 255 characters in length

Any bank of 6 messages can be assigned to the top buttons

Embedded commands in memory messages for a wide range of functions

Send your stored callsign

Send serial/QSO number, with or without automatic incrementing

Send a steady carrier 1-9 seconds in length

Increment or decrement speed by 1 WPM

Set your speed to a specific value

Send HSCW at up to 12,000 LPM (2,400 WPM)

Send QRSS from 1 to 120 seconds per dit

Set Farnsworth spacing

Send the last call sign (other than your own) sent from the paddles

Call any other message from any bank

Merge two characters into one for prosigns or language specific characters

Message stacking lets you quickly send up to six messages in sequence

Messages can be paused to manually insert information from the paddle or keyboard, and will automatically resume

Beacon mode will repeat a message at regular intervals from 1 to 255 seconds - Now with V1.20 or later, each message can have its repeat time set independently!

“Cut numbers” supported for serial numbers (0, 9 or both)

Altered settings (Farnsworth, QRSS, HSCW) automatically cancel on completion of the memory message

Simple, intuitive memory record/play control

Tap any memory button to play its associated message

Hold the button to review, record or edit the message

Optionally, you can edit messages from your PC!

Two USB interfaces

Review or change any setting from your computer

Review, change and save memory messages

Save and load complete configuration - multiple ops can instantly load ALL their own settings and messages!

Upgrade firmware and add features in seconds - no need to return the unit or even open the case!

“Dual-Set” speed control allows easy default to a pre-set speed

Separate, fixed user interface (Command Mode) speed setting

Adjustable sidetone monitor frequency and volume

“Stuck key” safety disables keyer if a stuck paddle is detected

Smart tune mode with constant carrier or 50% duty cycle

User adjustable speed control range (5-99 WPM); you set the lower and upper limits

Farnsworth spacing is supported

Automatic letter spacing is supported

HSCW at up to 12,000 LPM (2,400 WPM)

QRSS settings from 1 to 120 seconds per dit (QRSS1 – QRSS120)

Power from any AC or DC source from 9 to 20V

Built-in self resetting overcurrent protection

The firmware that controls the operation of the MasterKeyer MK-1 is under constant review and revision. New features are often added to keep the MasterKeyer at the leading edge of technology. Version 1.32 is the current released version.

MK-1 Manual V1.30 or higher:

MK-1 Firmware V1.32:

73 - Petr, OK1RP

07 April 2022

Easitalk™ - Advanced and innovative DSP noise reduction feature by Codan


Easitalk (easytalk) is a feature of NGT transceivers that removes noise and interference from incoming voice signals. Easitalk works by applying Digital Signal Processing (DSP) techniques to incoming voice signals. These techniques are similar to those used with digital mobile telephones and satellite telephones.

Easitalk is simple to use because it is integrated into the transceiver - it is not in a separate unit. No tuning is required, just an on/off control.

Listening trials indicate that Easitalk outperforms other noise reduction products, and it has been successfully trialled with a wide range of languages.

By integrating speech processing within the transceiver, Codan has not only made speech processing more effective but, more importantly, has made it useful in the hands of the user. For the first time, mobile users will now be able to enjoy the benefits of noise reduction technology.

Hear the difference ... The same transmission was received by two HF tranceivers, one with Easitalk enabled and the other, without. Both transceivers were connected to the same antenna.

No Easitalk

This is typical HF radio containing both voice and a large amount of background noise. The average signal (shown as a lighter colour) is fairly even indicating that the voice signal is not any more prominent than the background noise.

Codan advanced DSP noise reduction (Easitalk

Easitalk has removed much of the background noise and the average signal (shown as a lighter colour) displays a form much more like a voice waveform with highs and lows.

Does Easitalk offer any benefits over Lincompex? 

Yes. In networks that use Lincompex (LINk COMPression and EXpansion), each system in the network needs to be equipped with Lincompex software. With NGT, a single transmitter with Easitalk can be used within a network and still be able to communicate with other systems, but those systems won’t benefit from the features of Easitalk. 

For a continuous signal, Lincompex provides no discernible improvement over any other compression scheme. During inter–word quiet periods, the Lincompex receiver effectively prevents background noise levels from rising (this provides Lincompex’s apparent improvement). During continuous or substantially continuous speech, no improvement is noted. 

Under poor conditions, interfering signals may distort the recovered Lincompex control signal. Under very poor conditions the control signal cannot be properly decoded and the signal recovery mechanism breaks down completely. 

73 - Petr, OK1RP