It is a modernized successor to radio R-105 DM. The options for operation at different frequencies have the designation R-108M - from 28.5 to 36.5 MHz; R-109m - 21.5 to 28.5 MHz.
Despite the similar name is a completely different design, a much lighter (housing with Bakelite), built on subminiature lamps and semiconductors. R-105M was intended for ground forces.
| Frequency range | 36 - 46,1 MHz |
| Modulation | frequency modulation (FM) |
| Frequency change | fluent tuning, plot scale at 25 kHz |
| Work | without seeking and tuning ensured by built-in crystal calibrator, high stability heterodyne and precision optical scale |
| Intermediate frequency | 793,8 kHz |
| Output power | 1 W |
| Sensitivity | no worse than 1,5 μV |
| Frequency deviation | 5 kHz |
| Control | local and remote via the telephone line and the field telephone |
| Power | internal battery 2 pcs. NiCd 2.4 V / 24 Ah |
| Work time | approx. 20 hours with a time of receipt to the transmission 3:1 (on one set of batteries) |
| Weight | approx. 14 kg (working set) |
| Immersion | withstands immersion in water at 0.5 m for 10 minutes (both lids are closed) |
