AF-67 Trans-citer

Classic K4MGS/WB4KDI "ELMAC" pre 1955 on the left; "MULTI-ELMAC" post 1955 on the right.
The rust above the meter is from sweaty palms -- the send receive switch on the power supply was directly above the left side of the transmitter.

Section 1 - Description
Section 2 - Installation and Operation
Section 3 - Service and Alignment
Section 4.1 - Appendix (parts list)
Section 4.2 - Resistor Graph (Drawing 223 - for using a single HV supply)
Section 4.3 - Operating Voltage Chart
Section 4.4 - Control Layout (Drawing 217)
Section 4.5 - Chassis Layout (Drawing 216)
Section 4.6 - Figure 1, Drawing 219: AF-67 Plug Connection
Section 4.7 - AF-67 Schematic [1953] [1955]
Drawing 224: PS-2V Power Supply
Hints and Kinks from QST
Class-B modulator and T/R relay mod from CQ February 1957
Meter Lamps from CQ January and May 1958
6 Meter mod from CQ October 1958
N9BOR Elmac
Electric Radio, April 1981, AF-67 Modulator Fix, page
Electric Radio #189, February, 2005, Optimizing the Multi-Elmac AF-67 Transmitter, pages