[TowerTalk] Ameritron RCS-4 Remote Coax Switch

[Michael Tope]

I've been using an RCS-4 for years at 1500 Watts without any major 
problems, including cases where I used an antenna tuner in the shack to 
match a high VSWR on my vertical when operating on the higher end of 160 
and 80 meters. The one unit I was using regularly did develop an 
intermittent receive problem due to dirty relay contacts. That was easy 
enough to fix, however.

As I recall from a conversation I had with someone at Ham Radio Outlet 
in Burbank, there were problems with a production run of some of the 
post-MFJ merger units. I believe it involved early failures of the 
choke, but I don't remember if it was the choke in the control unit, the 
one in the remote unit, or both.

Even though the are no longer building products, I think MFJ is still 
offering repair services and parts (at least I thought that was the 
plan). It might be worth a call to see what they recommend.

73, Mike W4EF......................


On 12/10/2024 3:03 PM, RVZ via TowerTalk wrote:
> Hi Guys,
>   I've gotten a lot of good use out of Ameritron RCS-4 Remote Coax Switches.  However, I keep smoking RFC-1 and wonder if you can recommend a Heavy Duty replacement for RFC-1 that I'm less likely to smoke when running a KW? Thanks!  Dick- K9OM
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