General Information

Serial #

237

Part Number

1

Total Parts

1

AKA

N/A

Patents

N/A

General Description

METAL WITH SYNTHETIC PARTS

Dimensions

Note: These reflect the general size for storage and are not necessarily representative of the object's true dimensions.

Length

25.1 cm

Width

16.5 cm

Height

32.0 cm

Thickness

N/A

Weight

N/A

Diameter

N/A

Volume

N/A

Lexicon

Group

Astronomy

Category

Observation equipment

Sub-Category

N/A

Manufacturer

AKA

POLYTECHNIC

Country

United States of America

State/Province

New York

City

Brooklyn

Context

Country

Canada

State/Province

Ontario

Period

EARLY 1980'S +

Canada

AMERICAN MADE INSTRUMENT USED AT ALGONQUIN RADIO OBSERVATORY SITE 3 WITH 46 M. ANTENNA. ARO WAS ESTABLISHED IN LATE 1950S TO PROVIDE NATIONAL RADIO OBSERVATORY PROVIDING FACILITIES TO CONTINUE TO MONITOR SUN IN COLLABORATION WITH DOMINION RADIO ASTROPHYSICAL OBSERVATORY (DRAO) ESTABLISHED IN 1957 IN PENTICTON, BC.

Function

DEVICE USED IN RADIO ASTRONOMY OBSERVATORY TO TEST EFFICIENCY OF SIGNAL TRANSFER ALONG WAVEGUIDE BY COMPARING MAXIMUM & MINIMUM SIGNAL LEVELS IN STANDING WAVE, WHICH INDICATES HOW MUCH OF SIGNAL IS SUCCESSFULLY GETTING TO ITS DESTINATION.

Technical

INSTRUMENT IS S-BAND (2-4 GHZ)SLOTTED LINE & WAS PART OF TEST EQUIPMENT AT ARO SITE 3. SINCE RADIO SIGNALS MEASURED IN RADIO ASTRONOMY ARE VERY SMALL, OBSERVERS CANNOT AFFORD TO LOSE ANY, SO IT IS VERY IMPORTANT THAT SIGNALS GET INTO RECEIVER WITH ABSOLUTE MINIMUM BEING REFLECTED.

Area Notes

Unknown

Details

Markings

PLATE READING "POLYTECHNIC RESEARCH & DEVELOPMENT CO., INC./ TYPE 204B [LOGO] SERIAL 237/ BROOKLYN MADE IN U.S.A. NEW YORK"/ LABELS READING "HERZBERG INSTITUTE/ OF ASTROPHYSICS/ HIA-01690/ ASTRONOMY SECTION", "Property of/ Propriete de/ NRCC/CNRC/ 063938", "NATIONAL RESEARCH COUNCIL/ RADIO AND EE. DIV./ INSTRUMENT NO./ R2724", "TYPE B200A/ FXR [LOGO] SERIAL 872"/ HANDWRITTEN "SITE 3" ON CONTROL ROD/ BLUE "PRD [LOGO]" ON PROTECTORS/ SCALE CALIBRATED FOR 8 TO 18

Missing

APPEARS COMPLETE

Finish

LOWER SECTIONS PAINTED GLOSSY BLACK & BLUE/ WAVE GUIDE PAINTED GLOSSY GREY/ PLATED PARTS/ WHITE SYNTHETIC END PROTECTORS/ BLACK SCALES

Decoration

N/A