E-664, VHF / UHF receiver Rohde & Schwarz ESM-500A; developed and produced by Rohde & Schwarz, Munich.
The VHF / UHF receiver ESM 500A from Rohde & Schwarz was used as standalone monitoring receiver with army designation E-664 and also as receiver of the P-736 VHF direction finding system.
The ESM 500 VHF / UHF receiver in a 19” cabinet can be used as a monitoring receiver and replaced the ESM2 receiver in the P-736 VHF / UHF direction finder .
The receiver covers the entire VHF / UHF range from 20 - 1000 MHz , for SSB reception, the tuning step sizes can be switched down to 10 Hz.
The 99 memories can also be written externally via an IEC / IEEE bus or RS232C interface, a scan function allows to scan the memory channels - this functionality anticipates the possibilities found in a scanner receiver from the nineties.
The set is completely solid state.
The VHF / UHF receiving system ESM-500A made by Rohde & Schwarz was not only part of the P-736 VHF / UHF direction finding system, but it was also used separately as a monitoring receiver with the army designation E-664.