No. B117
Mini-VHF-oscillator

88...108 MHz. Operating voltage: 9 Volt battery. Extremely sensitive input for microphones, record-players, signal generator etc.
Attention! The operation and the possession of this transmitter as monitoring transmitter (Mini-agent) or as any other free radiating transmitter is liable to penalty! It is absolutely necessary to operate the device exclusively for test purposes after having placed it into a HF-proof metal housing (according to communication regulations it is forbidden to radiate any HF-radiation externally). Possibly the transmitter may be used on ships within international seas, e.g. as SOS-transmitter, for the own radio-station, etc.
The coil has been enclosed already wound and has to be soldered into the holes marked with "L". The microphone input is extraordinary sensitive. In case the transmitter may overdrive after receiving an extreme input signal, it is necessary to preconnect a trimmer potentiometer of approx. 100kOhm as voltage separater. Please observe the communcation regulations!
Adjustment of the transmitter: During battery operation with a 9V-battery the transmitter mounted according to the parts list will oscillate at approx. 90...100 MHz. Through stretching or pressing together the turns of the coil "L" it is feasible to modificate considerably the transmitting frequency.