I drilled holes in my nice new Icom IC-9100. This modification brings the path from Tx/Rx relay to Rx out to SMA connectors. With a jumper across the SMAs, the radio works as before, but it also enables a transverter to feed the receiver directly without risk of damage from the transmitter.
The SMA bulkhead connectors mount using 2-56 screws into tapped holes in the casting.
The bulkhead connector originally had semirigid coax soldered in, but pulled that off and resoldered it with UG-141 teflon coax. At the other end, mounted Taiko Denki TMP-K01X-A1 connectors, the same ones used by Icom for the internal jumpers. Those are available on Ebay. They normally use a crimp, but had no problem soldering them after some careful work stripping with an Xacto knife.
The original cable is tie-wrapped in place to allow restoration to original condition (except for the small tapped holes.
This was the subject of discussion on the 9100 reflector this week. Wonder how it is working for you since you made the modification? 73, N4DTF EM55
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