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Ausma - Latvian dawn.
The stationary transistor radio "Ausma" in 1962 produced an experimental batch of the Riga plant named after A.S. Popov.
Ausma became the first domestic desktop transistor radio with VHF band and universal power.
Compared with previously released models, the receiver has better sounding, stability of parameters with reduced power, the ability to receive FM stations.
Reception of DV and CB stations is carried out on a rotary magnetic antenna, on VHF on an external one.
The receiver is powered by 9 V batteries or from the mains.
Power consumption from the network is 5 watts.
The rated output power on the 1GD-3 loudspeaker depends on the power supply: in the battery mode, 150 mW, in the mains 500 mW.
Sensitivity with an external antenna on the Far East, Northwest - 20 ... 100 uV, VHF 2 ... 10 uV.
When working with a magnetic antenna on the Far East, SV - 0.2 ... 0.8 mV / m.
Selectivity in the AM path 30 dB, FM 36 dB.
IF 465 kHz and 8.4 MHz.
Frequency response by sound pressure, at LW, SV - 120 ... 6000 Hz, FM - 120 ... 12000 Hz.
The distortion coefficient in the AM tract is 6%, and the FM is 4%.
The parameters are stable when powered by batteries and mains.
When the power is reduced to 6.3 V, the sensitivity does not change, but the output power decreases and the THD increases.
The receiver housing is made of wood, with dimensions 560x265x245 mm.
Weight with batteries 8.5 kg.
Raimonds Austers wrote: About two dozen receivers were manufactured.
Either the receiver did not fit into the new GOSTs, or they did not invite NIIRPA to the co-authors, but the design of the experimental model went to the Minsk-62 serial radio.
In photo 3, 4, the loudspeaker is not standard.