Radio receiver PR-4P


The PR-4P radio receiver became the post-war modernization of the US receiver, which was developed around 1935 for military aviation. This is a universal receiver for receiving telephony, tonal telegraphy and telegraphy with undamped oscillations. It was used as part of the RSB radio stations of all modifications, RAF, RSR-1 and others.

he PR-4P radio receiver became the post-war modernization of the US receiver, which was developed around 1935 for military aviation. This is a universal receiver for receiving telephony, tonal telegraphy and telegraphy with undamped oscillations.

Superheterodyne with one IF frequency conversion 112 kHz. The range of the receiver provides the ability to receive radio signals at frequencies from 175 to 12000 kHz (1714 – 25 m). The entire range of the radio is divided into 5 sub-bands: 1 sub-band 175 – 350 kHz; 2 sub-range 375 – 875 kHz; 3 sub-range 900 – 2150 kHz; 4 subband 2150 – 5000 kHz; 5 subband 5000 – 12000 kHz. On 1 and 2 sub-bands, the frequencies are indicated in the table on the front panel of the radio; on 3, 4, and 5 subranges – plotted directly on the scale. There is no graduation on the sub-bands “I” 173-350 KHz and “II” 350-875 kHz, it is replaced by an accurate scale broken by 180 degrees.

he PR-4P radio receiver became the post-war modernization of the US receiver, which was developed around 1935 for military aviation. This is a universal receiver for receiving telephony, tonal telegraphy and telegraphy with undamped oscillations.
he PR-4P radio receiver became the post-war modernization of the US receiver, which was developed around 1935 for military aviation. This is a universal receiver for receiving telephony, tonal telegraphy and telegraphy with undamped oscillations.
he PR-4P radio receiver became the post-war modernization of the US receiver, which was developed around 1935 for military aviation. This is a universal receiver for receiving telephony, tonal telegraphy and telegraphy with undamped oscillations.