Radio Engineers Long Distance Receiving Set Other examples I've seen have a Continental Radio Company metal tag on the front panel, but the only manufacturer's marks on this one are on the three condensers inside the radio. The left condenser is marked 'Tested Phone Condenser, RADIO ENGINEERS, 315-317 Marquette Ave., Minneapolis, Minn.' The right condenser is marked 'Tested Grid Condenser, RADIO ENGINEERS, 315-317 Marquette Ave., Minneapolis, Minn.' The third condenser is marked 'Antenna Series Condenser, RADIO ENGINEERS, 315-317 Marquette Ave., Minneapolis, Minn.' Click here to download advertising material for this radio. Copyright 2024, All rights reserved. The Farmers