RAL10 Line radiometers: We clarify the differences between the various measuring instruments
The starting point: RAL10KIT e RAL10AP
The “entry level” instruments are represented by RAL10KIT and RAL10AP receiver. The first one, cheaper version, is designed for self-builder who will assemble the parts into a suitable case, completing it with a power supply, as specified in the instructions. After the receiver realization it will be possible to connect the antenna system with a coaxial cable and start the observations by installing and activating the provided software. For all instruments of RAL10 family, you can use any commercial antenna and LNB suitable for 10-12 GHz satellite reception.
For those who want to buy the instrument ready to use, inside a compact anodized aluminum housing, we suggest RAL10AP: it is a radiometer with technical characteristics comparable to those of RAL10KIT, combined with a 12V – 2A common external power supply (available on request). On the front panel there are protection fuses (with interruption led signaled) for the main power and for the LNB power supplied through the coaxial cable. An additional and unique feature of this model is the post-revelation audio output: if connected to an external amplifier or to the audio input of a PC, allows monitoring of detected signals through one of the many free downloaded software for the analysis of spectrograms.
RAL10KIT and RAL10AP are Total-Power radioemters with a bandwidth of 50 MHz, centered on the IF-SAT frequency of 1415 Mhz, if they are combined with a standard TV-SAT LNB with local oscillator at 9.75 GHz, they allow the reception at 11.2 GHz frequency.
For the more experienced: RAL10TS
The next model, RAL10TS, is an evolution of the previous versions: developed with professional performances and equipped with a pair of microprocessors that manage all the functions, it represents the leading instrument for the realization of amateur radio astronomy installations with semi-professional characteristics.
RAL10TS is a bench-top instrument, assembled inside a sturdy anodized aluminum container. It has no interfaces, as it is completely programmable via PC, through our supplied Aries software. It has an audio output to listen to the revealed noise. If measurements are required where the mains supply voltage is not available, an external 12 V power source (rechargeable battery or the RAL10BT Rechargeable Battery Unit) can be connected to the RAL10TS via a socket on the rear panel. This possibility, together with compactness and portability, make RAL10TS the ideal product, in terms of practicality and completeness, in “on the field” radio astronomy measurements.
In planning and construction a great deal of attention was paid to optimizing the performance of a microwave radiometer, in particular those deemed indispensable for a radio astronomy receiver such as the sensitivity and stability of the measurement. Sensitivity is guaranteed by a wide bandwidth (of the order of 250 MHz) and by a high gain of the IF section, while the stability and reproducibility of the measurement are optimized by the control (PID) of the internal temperature of the receiver which minimizes the variations of the amplification factor and the operating parameters of the instrument at room temperature variation.
error: Content is protected !!