Heterodyne indicator of resonance `` GIR-1 ''.
Instruments for adjusting and controlling the PTA.The GIR-1 heterodyne resonance indicator has been produced by the Vyborg Instrument-Making Plant since the 1st quarter of 1973. The heterodyne resonance indicator "GIR-1" is intended for checking and adjusting radio or television equipment by radio amateurs. The device works as a high frequency generator with and without modulation, as a low frequency generator and a resonant wavemeter. The operating frequency range of the "GIR-1" device is from 400 kHz to 38 MHz.
