Original U.S. Vietnam War Hand Held AN/PRT-4A Radio Transmitter Headgear After years of training

After years of training

In the winter of 1886

Fighting through the hedgerows

thinking it would destroy his career

Original U.S. Vietnam War Hand Held AN/PRT-4A Radio Transmitter Headgear After years of trainingOriginal Items: Only One Available. Introduced in 1965, the PRT 4A is a 2 channel crystal controlled handheld FM transmitter, for use with helmet receivers as part of a set. The A version transmits a 150 Hz tone that opens the squelch on receivers so equipped, such as the VRC 12 series, the PRR 9 (XE 9),and PRC 25 77. Power output is 450mW on Channel 1 and 50 250mW on Channel 2. The radio has an empty skeleton detachable bottom BA 399 U battery