R-2000
RF-Input Mod
Submitted by Terry
I also added a "5-way" binding post to one of the screw holes (originally intended to hold the add-on VHF converter). I used a 1/2" braid to bond the R2000 to my ground system.
While hunting down sources of noise in my home, I found that one surprising source was leakage through the 50/500/Gnd/Gnd antenna connections. I cleaned that one up by moving the RF input connector from the terminal strip with the 50/500/Gnd/Gnd and transformer over to the RF input on the main RF board. The connectors are the same. I connected the daughter board output cable to its own input to keep the cable out of the way. This reduced the QRM from my PC to a low enough level so as not to be an issue.
I have included a couple of photographs below to show these changes.
The first photo below shows the BNC connector with the external washer I used to fill in the larger SO259 mounting hole. I saved the original SO258 in the event I ever need to revert back to stock. The "5-Way" ground binding post can also just be seen in the upper right-hand corner:
You can also see above that
the internal attenuator switch has been removed. About 8 years
ago
the switch went flaky on me, so I removed it. I added an external
10dB and 20dB attenuator that works fine.
I tried cleaning it at
first,
but the switch became so touchy that it made the radio unusable.
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