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<h1>Radio and Radar Systems</h1>
<h2>HF/MW Tuners and Software-Defined Radios</h2>
<p>Our radio engineering group specializes in designing and developing advanced radio receivers, transmitters, upconverters, downconverters, and advanced signal analysis systems. Our strengths lie in �software radio� techniques, advanced DSP design, programmable logic design, and user-friendly software interfaces. With these skills, we can produce high-performance, flexible systems to suit the specialized requirements of a variety of users.
<br><br>
Our general-purpose HF and microwave tuners allow surveillance and monitoring over a wide range of frequencies. The HF units cover the frequency range of 1-30 MHz, while the VHF/microwave units cover the frequency range of 30-2000 MHz. These units offer high performance, flexibility, and vertical upgrade. With programming, they accommodate a variety of IF bandwidths, modulation formats, frequency resolution, and analysis routines. The system is based on modular sub-assemblies and a variety of combinations can be selected.
<br><br>
The tuners and receivers use the same <a href="gpssystemrf.html">RF front ends</a> and multiple-conversion superheterodyne topologies throughout. We�ve paid special attention to the dynamic range and spurious performance of the units so they can operate in high-signal-strength environments. Control signals pass to the units via a standardized RS-232 interface. We can provide Windows�-based control software, or, should the user desire, the interface control specification so the user can develop customized control software.
<br><br>
The tuners convert and pre-select frequencies, without demodulation. Their outputs are at a fixed IF, suitable for further signal processing, either analog or digital.
<br><br>
Our receivers use our advanced suite of DSPs and signal analysis tools to provide a complete solution for surveillance and monitoring of signals spanning a wide range of frequencies. The receivers accommodate all commonly encountered modulation formats. Our proprietary <a href="signalimpulse.html">IMPULSE�</a> software package can help you readily produce specialized signal analysis and logging routines.
<br><br>
The equipment mounts in a standard 19� relay rack. The standard chassis includes a built-in high-resolution LCD monitor, but accommodates an external monitor if necessary, and up to four tuners or receivers.
</p>
<h3>HF TUNER SPECIFICATIONS</h3>
<div class="blockquote">
<div class="box">
<p><b>(HF DC 200-01-03)</b><br><br>
Input Frequency Range: 1-30 MHz<br>
Tuning Resolution: 0.1 Hz<br>
Tuning Speed: 25 uS<br>
Memory Channels: 250<br>
IF Bandwidth (3 dB): 1 MHz, maximum, others by special request<br>
Image Rejection: 80 dB<br>
Gain: 110 dB<br>
Noise Figure: 5 dB<br>
Final IF Output: 1 MHz<br>
Reference Frequency: 10.000 MHz<br>
Operating Temperature: 0� to +50� C</p>
</div></div>
<h3>HF RECIEVER SPECIFICATIONS</h3>
<div class="blockquote">
<div class="box">
<p><b>Single Channel (RX HF-001-01-04)<br>
Multi-Channel (RX HF-001-01-04)<br></b>
<br>
Uses the HR Tuner as its RF front end, so it has all the RF specifications as the HF tuner and more.
<br><br>
A/D Converter: 16 bit, 5 MSPS<br>
Types of Demodulation: AM, CW, SSB, ISB, FM, FSK, via DSP<br>
Signal Analysis: Parameter/classification analysis, high rate scanning,<br>
Direction finder with multiple receiver configuration<br>
Final IF Bandwidth (3 dB): 100 Hz to 1 MHz, user-selectable digital filters<br>
Control Interface: RS-232</p>
</div></div><h3>VHF/MW TUNER SPECIFICATIONS</h3>
<div class="blockquote">
<div class="box">
<p><b>(MWDC-300-01-04)</b><br><br>
Input Frequency Range: 30-2000 MHz<br>
Tuning Resolution: 2 MHz<br>
Tuning Speed: 100 �s (typical)<br>
Memory Channels: 250<br>
IF Bandwidth (3dB): 30 MHz, maximum, others by special request<br>
Image Rejection: 100 dB, minimum<br>
Gain: 60 dB, typical, with attenuator set to 0 dB<br>
Gain Range: 30 dB (typical), with 2 dB steps, user-selectable each channel<br>
Noise Figure: 6 dB<br>
Final IF Output: 25 MHz<br>
Reference Frequency: 10.000 MHz<br>
Operating Temperature: 0� to +50� C<br>
Control Interface: RS-232</p>
</div></div><h3>VHF/MW RECEIVER SPECIFICATIONS</h3>
<div class="blockquote">
<div class="box">
<p><b>(RXMW-001-01-05)</b><br><br>
A/D Converter: 15 bit, 100 MSPS<br>
Types of Demodulation: AM, CW, SSB, ISB, FM, FSK, via DSP, Direct Sequence<br>
Spread spectrum and frequency hopping (when provided with sequence)<br>
Signal Analysis: Parameter/classification analysis, high rate scanning, direction finding with multiple receiver configuration<br>
Final IF Bandwidth (3dB): 100 Hz to 30 MHz, user-selectable digital filters<br>
Control Interface: RS-232</p>
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<h2>Radio & Radar Systems</h2>
<ul>
<li> <a href="radiodevel.html">Software Radio Development System</a></li>
<li> <b>HF/MW Tuners and Software-Defined Radios</b></li>
<li> <a href="radiodf.html">DF and Signal Analysis Set: HF to Microwave</a></li>
<li> <a href="radioswmodem.html">Multipurpose Software Modem</a></li>
<li> <a href="radiohfcomm.html">High-Data-Rate HF Communication System</a></li>
<li> <a href="radiochsim.html">Channel Simulator</a></li>
<li> <a href="radiohfvhf.html">HF/VHF Radar</a></li>
<li> <a href="radiomicro.html">Microwave Radar</a></li>
<li> <a href="radiort.html">Real-Time Signal Recording & Analysis</a></li>
<li> <a href="radiopass.html">Passive Radar: Radio Fence</a></li>
<li> <a href="radiojam.html">Jammers and Spoofers</a></li>
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