Quote:
Originally Posted by jshorva65
I am also awaiting the arrival of another recent score in the category of efficiency-enhancing tools for TV alignment. I expect the RCA WG-295B Video Multi-Marker unit to arrive tomorrow, NIB...
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The RCA WG-295B arrived with the box, but the seller is still looking for its manual since all the accompanying literature was kept separately in file folders by the original owner. As I had thought, it is a passive device. Inside the unit is an cascaded array of LC resonant circuits. A cable with an Amphenol microphone plug exits one end of the case, an Amphenol microphone jack is mounted on the other end of the box. On the front panel is a Markers In/Out switch and a row of rivets inserted into a phenolic insulator. In use, the unit was designed to be connected between a Marker Generator such as the WR-99 and WR-70 Marker Adder, which then connected to a Sweep Generator such as WR-69. Those four units together produced Sweep with Post-Marker Injection universally for 24 MHz and 44 MHz IF and for RF alignment. Setup, however, needed to be done manually for each channel.
Although the Type 1200A Wobbulator provided pushbutton presets for sweep and marker parameters, simplifying setup, it did not offer the superior performance of post-marker injection.