Receiving Antenna
It's a horizontally polarized log-periodic
antenna pointed at KLVR, 91.9MHz, near Santa Rosa, CA.
Cavity Filters
These 3 cavity filters are connected between the
receiving antenna and the translator unit's input to (1) protect against
input overload due to the translator's output signal and (2) reduce
adjacent-channel interference from KALW on 91.7MHz.
Translator Unit in Operation
The left meter displays
received signal strength while the right meter displays output power.
Because the equipment was being serviced during this shot, a headphone
cable is plugged into the front panel to monitor demodulated audio.
Back of
Translator Unit
The output connection is in the lower
left corner and the input is in the upper right corner.
Transmitting Antenna
It's a vertically polarized log-periodic
antenna pointed towards somewhere in the San Jose area. The vertically
polarized 88.9MHz signal is easily received by car radios which normally
use vertically polarized antennas.
Questions and comments may be sent to Dave Atherton at: