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The following documents a modification I made to my Ranger to improve CW operation.

This modification is useful to those who operate CW with their Ranger and DO NOT use an antenna relay controlled by the Ranger. With the modification, if you're using a Johnson or B&W T/R switch instead of an antenna relay, you'll be able to leave the Ranger in CW mode and zero beat the VFO by just turning the Crystal/VFO switch to ZERO.

In stock form, to zero the VFO on a station you're listening to you have to move two switches. First, turn the Operate switch to Standby. That removes the screen voltage from the final tube by grounding the plate of the clamp tube V6. Then you have to move the Crystal/VFO switch to ZERO to key the transmitter. The goal is to eliminate one of these switch operations so all we have to do is turn the Crystal/VFO switch (SW2) to ZERO and we zero beat the VFO without any output to the antenna.

First, locate the yellow wire connected to pin 5 of SW2. Clip both ends (note the terminal strip terminal it's connected to). Next, remove the yellow wire from SW2 pin 4 and connect that end to terminal 6 of the terminal strip where the C22 is (this is the terminal you just clipped the wire from). The result is that the VFO output is now always connected to the grid of V3.

Next, remove the wires attached to SW2 switch positions 1 through 6 (including the jumpers between pins). Clip both ends. That removes the ability to use crystal control for the Ranger, but frees up switch contacts needed in the following steps.

Next, run a wire from pin 4 of SW2 to ground.

Next, run a wire from pin 5 of the clamp tube (V6) to pin 6 of SW2.

Now when SW2 is switched to the ZERO position, pin 4 is connected to pin 6, grounding the plate of V6 and cutting off the screen voltage to the final tube. The result is the VFO is turned on and the final is turned off.

73, Floyd - K8AC