"Hello,
I am very excited to share with all friends that we just finished tests of our new plastic mould for RGO ONE knob sets. Making this was very very long time and cost consuming process but finally we are ready and first knobs were shot by the machine finished and ready to go…
Have a look at pictures:
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:
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
.../-.-
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
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)
NGT VR HF transceiver provides comprehensive solutions to suit your communication needs. The NGT VR HF SSB transceiver is suitable for base station and vehicle applications. The HF transceiver incorporates all the usual features of CODAN leading-edge High Frequency (HF) radio technology, and also features an innovative handset and Easitalk™ as standard. CODAN Automated Link Establishment (ALE) capabilities, voice encryption, phone calling features, and remote diagnostics/configuration are optional.
Key features
Innovative handset
The handset can access all programming and procedures in a convenient and consistent manner. It provides an advanced interface, more efficient operation and easier network management.
Users can program channels, functions and addresses into the handset to meet their own requirements. These functions can then be accessed via a series of hot keys. A built-in address book can store up to 100 addresses that can be easily retrieved via the menu.
The handset may be mounted in any position that makes viewing easier. The handset provides a comprehensive display of information.
Emergency Selcall
As HF transceivers are often used in places where safety of life is at risk, the CODAN NGT VR HF transceiver has a unique emergency calling facility. A distress signal can be sent automatically to selected stations.
Multiple channels
The NGT VR HF transceiver has a capacity for 20 channels.
Easy installation
Every aspect of the NGT VR HF transceiver has been designed for easy installation in fixed and mobile environments. The unit is small and convenient to mount.
Smart monitoring
A variety of channels can be monitored while the radio is muted, and calls can be received on any of the channels being scanned.
Free tune receiver
Free tune receiver mode enables you to tune into any frequency and store it as a channel with your own label. Also, users can listen to AM stations, short-wave broadcasts and more.
Testing and protection
All CODAN transceivers are fully protected from faults such as antenna damage, overvoltage and reverse polarity, which can destroy other transceivers. A three year warranty is available to every registered user.
Other features
High dynamic range Rx
The high dynamic range of the NGT receiver provides better reception in difficult conditions.
Voice Encryption
The optional Voice Encryptor provides communication security (COMSEC) and enables users to communicate sensitive information in confidence, without complicated setup procedures. It also provides visual confirmation that the conversation is secure.
Remote diagnostics/configuration
With Remote Diagnostics your radio installation can be tested remotely by another station to measure parameters such as signal strength, battery voltage levels and power.
It is also possible to remotely reconfigure most transceiver parameters including a facility to disable the transceiver.
Service and support
All CODAN customers are supported with our worldwide network of Accredited Service Centers. Regular auditing and training by CODAN technical staff ensure the best after sales service.
Advanced features
Automatic Link Establishment (ALE)
To automatically select the most suitable channel, ALE is available as an option. CODAN ALE provides full interoperability with other equipment compliant with FED-STD-1045 ALE.
In addition, CODAN HF transceivers outperform many conventional ALE systems through the use of CODAN Automated Link Management (CALM).
CALM provides the following additional capabilities and features:
Easitalk™
The NGT VR HF transceiver uses Digital Signal Processing techniques to process received audio signals to minimize the effect of interference and reduce noise. Easitalk is simple to operate and extensive testing has shown that its performance is not affected by the language of the user.
BITE
Built-In Test Equipment (BITE) is a process that can be initiated by the user to test and report on certain aspects of the system’s performance.
Calling facilities
The NGT VR HF transceiver comes standard with selective calling and optionally supports phone calling, and remote diagnostics and configuration. All incoming calls are time-stamped to identify precisely when each call arrived.
Selcall: Selcall gives users more flexibility. An operator can call a single transceiver and only that unit will respond—no more listening to noise while waiting for a call. The called transceiver will also signal that the message has been received.
Phone call: This optional function enables the transceiver to make telephone calls via suitable bases equipped with a telephone interconnect.
Technical specifications
| Frequency range | 1.6–30MHz Tx, 250 kHz – 30 MHz Rx |
| Channel capacity | 20 channels |
| Operating mode | Single sideband (J3E, USB, LSB, AM) |
| Frequency stability | ±0.3 ppm (–30 to +60°C) |
| Primary voltage | 12 V DC nominal, negative earth |
| Primary power | 2011 Receive (no signal): 0.7 A Transmit: J3E voice: 6 A, J3E two-tone: 10–14 A |
| Receiver sensitivity | –125 dBm (10 dB SINAD) |
| Transmitting power | 125 watts PEP |
| Spurious and harmonic emissions | Better than 65 dB below PEP |
| Temperature | –30 to +60°C |
| Size and weight | 2011 RF Unit: 210mm W x 270mm D x 65mm H; 3.3 kg 2020 Handset: 65mm W x 35mm D x 130mm H; 0.3 kg |
| ALE link quality data | 24 hours of up to 100 stations and 100 channels using a total of 72675 discrete sets of LQA data |
| ALE link quality data resolution | Local: 8 bits SINAD, 8 bits BER Remote: 5 bits SINAD, 5 bits BER |
| Dust | MIL-STD-810F method 510.4 |
| Vibration | MIL-STD-810F method 514.5 |
| Shock | MIL-STD-810F method 516.5 |
Options / accessories
| Option | Purpose |
| CALM | FED-STD-1045 ALE/CALM |
| D | Remote Diagnostics |
| P | Phone call |
| COMSEC | Voice Encryptor |
| CONSOLE | NGT Desk console for base station use |
