Heathkit HD 1234 Manual 2
This is the 20 pages manual for Heathkit HD 1234 Manual 2.
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Extracted text from Heathkit HD 1234 Manual 2 (Ocr-read)
Page 1
HEATHCOMPANYPHONEDIRECTORY The foilomna telephone numbers are aired lines lo the depanmem lirted: Kit orders and delW inlormation ...................... (616) 982541 1 Cle4n ............................................ (616) 8823661 Replacemem Pam.. ............................... (616) 982.3~1 TBChhicd Assistance RC, Aud'b, and E&onic hgans ................. (616) 982.3310 hateur Radio ................................... (616) 882-3286 Test Equipment. Slmbe Lighfs, Cdcuiatoro, CIOC~, Weather In8humenlP ........................ (616) 982.3315 Television ........................................ (616) 982-3307 Aubmme, Mame. Wliances, SBardty. &nerd Prduck.. ........................ (515) 9825496 YOUR HEATHKIT 90-DAY FULL WARRANTY
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Assembly and Operation of the COAXIAL SWITCH MODEL HD-1234 TABLE OF CONTENl'S Introduction ............................. 1 Parts List ............................... 2 Step-by-step Assembly ......................... 4 Installation and Applications ...................... 9 ......................... In Case of Difficulty 13 Specifications ............................. 14 Warranty ........................ Inside front cover Customer Service ..................... Inside rear cover INTRODUCTION The Model HD-1234 Coaxial Switch is designed to switch one RF source or receiver to any one of several antennas or RF loads, while grounding the unused connectors. The Coaxial Switch can be used in conjunction with the Heathkit RF Load Wattmeter for off-theair tuneup, and can then be immediately switched to an antenna for normal transmission and reception. A mounting bracket is provided to permit you to conveniently hang the switch on the side of an equipment enclosure, onto a desk, or on a wall. The switch may be used handily without the mounting bracket in any application which suits the needs of your transmission system. HEATH COMPANY BENTON HARBOR. MICHIGAN 49022
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Page 12 @$b=**--4*5--3 OPERATION Refer to Schematic Diagram, Figure 4. ROTARY SWITCH m REAR WAFER ,FRONT WAFER I When the switch knob is rotated to either the @ or the @ positions, all output connectors are grounded except the C connector. WARNING: DO NOT OPERATE THE TRANSMITTER INTO THE COAXIAL SWITCH WHEN THE POINTER IS AT THE @ OR THE @ POSITION. When the Switch is in either of these positions, the transmitter is connected to an open circuit. I t I I Figure 4