Wednesday 5 August 2015

2 rigs 2 antennas 2 coaxial switches - Part 2

The Diamond CX-210A switches arrived along with some high spec 0.5m long patches leads terminated either end with PL259 plugs.

I cut a small piece of plywood on the table saw and mounted both switches side by side with the supplied screws. One of the patch leads was connected between the switches as per my circuit diagram outlined in Part 1.


The other two patch leads were used to connect to the two rigs. The antennas were then connected to the switches output as per the photo.

I placed the switch assembly board behind both rigs on the desk. In operation I just exercise a few muscles and get out of the shack chair to throw each switch! No need for it to be in finger tip reach.

The insertion loss for each switch is 0.05dB from DC to 500MHz and I have not noticed any issues with loss of sensitivity of either rig. I just worked a couple of stations in Argentina and Brazil (about 8000 miles away) on 35 watts PSK31 so neither transmission nor reception have been impacted. VHF/UHF on the FM transceiver is ok too with a distant repeater in Birmingham (about 72 miles away) still being workable on 2m.

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