25-158 Drake R4
The R.L. Drake Company produced the R-4 as an advancement over the famous 2C model. The R-4 covers: 3.5-4, 7-7.5, 14-14.5, 21-21.5 and 28.5-29 MHz plus ten 500 kHz crystal positions (with optional crystals). Modes of reception include: SSB, CW and AM. The dial accuracy is and impressive ±1 kHz. Features include: PBT, Line out, Crystal Calibrator (100 kHz), RF Gain, Mute Jack, Speaker Jack, Anti-Vox Jack, ¼ inch headphone jack and Dial Lamp. This radio requires an external speaker. Transceive operation maybe obtained by adding the T-4 reciter or T-4X transmitter.