Services

Metsähovi's main receivers

The essential feature of a radio astronomy receiver is the capability to detect very weak radio signals as sensitively as possible. In radio telescopes and antennas, the receiver is the central part, doing the actual data collecting.

Better sensitivity can be achieved by using modern technology components such as HEMT based low noise amplifiers, cryogenic cooling, and computer aided simulation and design. At the same time the receiver needs to be very stable to enable sufficiently long integration times of the weak signal. In VLBI receivers an important feature is the phase stability because this technique relies on the phase coherence of several signal acquisitions.

Currently Metsähovi Radio Observatory operates the following receivers. Detailed information can be obtained from Metsähovi.

Receiver	Signal freq. [GHz]	IF freq. [GHz]	Polarization	Trec [K]
22 GHz Continuum	21.0-22.0/22.4-23.4	0.2-1.2	Linear	270
22 GHz VLBI	21.980-22.480	0.5-1.0	LCP/RCP	60
37 GHz Continuum/Solar	35.3-36.3/37.3-38.3	0.5-1.5	Linear	280
Geo-VLBI	8.15-8.65 2.21-2.35	0.5-0.98 0.68-0.82	RCP	100
43 GHz VLBI	40-45	8.5-11.5/0.5-1.0	LCP/RCP	100
84-98 GHz VLBI	84-98	0.5-1.0	LCP/RCP	120
MCA	4-8	TBD	?	?

MET 37GHz continuum receiver block diagram

41.75 K

This service is provided by:

Metsähovi Radio Observatory

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Published: 20.3.2018
Updated: 12.5.2022