Here is catalogue no: 52 of Harvey Radio Labs transmitters, from late 1937 or early 1938. The companys address now changed from Brookline to Cambridge, Mass. I have enlarged all pictures from the catalogue. Enjoy...

Cover page

Introduction by Mr. Harvey

UHX-10 transmitter

UHX-10R transmitter

80-T transmitter

80-T specifications

700-R transmitter

700-R specifications

200-R transmitter

200-R specifications

UHX-35 transmitter

UHX-35 specifications

200-S transmitter

200-S specifications and 60-S transmitter

Final page